CHAPTER 5: Drive Couplings - BMG

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A range of shaft couplings from the highly resilient
to simple rigid, covering virtually any industrial
application.
Drive Couplings
Design Data Required
• Type of prime mover, or driving m/c
• Electric motor starting arrangement
• Engine or compressor inertia of both machines
(MR 2 or GD 2 )
• Rotational speed of prime mover
• Power rating of prime mover
• Type of coupled machine
• Power absorbed by coupling machine
• Hours/day duty & start/stop frequency
• Both coupled shaft diameters
• Distance between shaft ends
• Likely machine alignment quality
angular, parallel and axial
• Angle between shafts
for universal joints
DRIVE COUPLINGS
FENAFLEX
24 TO 14675 Nm
HIGHLY ELASTIC & FLEXIBLE
STANDARD DBSE SPACER VARIANT
TAPER LOCK SHAFT FIXING
PAGE 194
HIGH SPEED PAGE 199
FLYWHEEL PAGE 200
HRC
30 TO 3150 Nm
COST-EFFECTIVE COUPLINGS
TORSIONALLY ELASTIC & FLEXIBLE
TAPER LOCK SHAFT FIXING
PAGE 203
FLYWHEEL PAGE 205
JAW COUPLINGS
3.5 TO 105 Nm
INCIDENTAL MISALIGNMENT CAPACITY
VARIOUS HUB/ELEMENT MATERIALS
UNIVERSAL JOINTS
UP TO 720 Nm
SINGLE & DOUBLE JOINTS
DRIVE COUPLINGS
PAGE 207
PAGE 208
222 TO 174000 Nm
TAPER-LOCK ® RIGID COUPLINGS PAGE 211
DISC-TYPE PAGE 212
FENAGRID ® PAGE 214
ESCO
ESCOGEAR PAGE 221
ESCO DISC PAGE 244
ELASTIC PAGE 270
FLEXIBLE GEAR PAGE 271
OTHER DRIVE COUPLINGS
KEYLESS RIGID COUPLING PAGE 272
FLUID DRIVE COUPLING PAGE 274
QUICK-FLEX COUPLING PAGE 276
Drive Couplings 193
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Fenaflex
194 Drive Couplings
Couplings
Fenaflex couplings provide all the desirable features of an ideal flexible coupling, including Taper-Lock ® fixing.
The Fenaflex coupling is a "torsionally elastic" coupling offering versatility to designers and engineers with a
choice of flange combinations to suit most applications.
The flanges are available in either F or H Taper-Lock ® fitting or pilot bored, which can be bored to the required size.
With the addition of a spacer the coupling can be used to accommodate standard distances between shaft
ends and thereby facilitate pump maintenance.
Fenaflex couplings can accommodate simultaneous maximum misalignment in all planes without imposing
undue loads on adjacent bearings and the excellent shock-absorbing properties of the flexible tyre reduce
vibration and torsional oscillations.
Fenaflex tyres are available in natural rubber compounds for use in ambient temperatures between –50OC and +50OC. Chloroprene rubber compounds are available for use in adverse operating conditions (e.g. oil or
grease contamination) and can be used in temperatures of –15OC to +70OC. The chloroprene compound
should also be used when fire-resistance and anti-static (F.R.A.S.) properties are required.
SELECTION
(a) Service Factor
Determine the required Service Factor
from table below.
(b) Design Power
Multiply the normal running power by
the service factor. This gives the design
power which is used as a basis for
selecting the coupling.
(c) Coupling Size
Refer to Power Ratings table
(page 195) and from the appropriate
speed read across until a power greater
than that required in step (b) is found.
The size of Fenaflex coupling required
is given at the head of that column.
(d) Bore Size
Check from Dimensions table
(page 196) that chosen flanges can
accommodate required bores.
SERVICE FACTORS
R
SPECIAL CASES
For applications where substantial shock, vibration and torque
fluctuations occur, and for reciprocating machines (e.g. internal
combustion engines, piston pumps and compressors) refer to
Fenner Power Transmission Distributor with full machine details
for analysis.
EXAMPLE
A Fenaflex coupling is required to transmit
45kW from an A.C. electric motor which
runs at 1440 rev/min to a rotary screen for
12 hours per day. The motor shaft is 60mm
diameter and the screen shaft is 55mm
diameter. Taper Lock is required.
(a) Service Factor
The appropriate service factor is 1,4.
(b) Design Power
Design power = 45 x 1,4 = 63kW.
(c) Coupling Size
By reading across from 1440 rev/min in
the power ratings table the first power
figure to exceed the required 63kW in
step (b) is 75,4kW. The size of coupling
is F90 Fenaflex.
(d) Bore Size
By referring to the dimensions table it
can be seen that both shaft diameters
fall within the bore range available.
Electric Motors
Steam Turbines
Type of Driving Unit
Internal Combustion Engines†
Steam Engines
Water Turbines
Hours per day duty Hours per day duty
10 and over 10 over 10 and over 10 over
Type of Driven Machine
CLASS 1
Brewing machinery, Centrifugal compressors and pumps.
under to 16 incl. 16 under to 16 incl. 16
Belt conveyors, Dynamometers, Lineshafts, Fans up to 7,5kW
Blowers and exhausters (except positive displacement),
Generators.
CLASS 2*
Agitators, Clay working machinery, General machine tools,
0,8 0,9 1,0 1,3 1,4 1,5
paper mill beaters and winders, Rotary pumps, Rubber extruders,
Rotary screens,Textile machinery, Marine propellors and Fans
over 7,5kw.
CLASS 3*
Bucket elevators, Cooling tower fans, Piston compressors and
1,3 1,4 1,5 1,8 1,9 2,0
pumps, Foundry machinery, Metal presses, Paper mill calenders,
Hammer mills, Presses and pulp grinders, Rubber calenders,
Pulverisers and Positive displacement blowers.
CLASS 4*
1,8 1,9 2,0 2,3 2,4 2,5
Reciprocating conveyors, Gyratory crushers, Mills (ball, pebble
and rod), Rubber machinery (Banbury mixers and mills) and
Vibratory screens.
2,3 2,4 2,5 2,8 2,9 3,0
* It is recommended that keys (with top clearance if in Taper-Lock ® bushes) are fitted on application where load fluctuation is expected.
† Couplings for use with internal combustion engines may require special consideration, refer to pages 200 and 205.

POWER RATINGS (kW)
R
Fenaflex Couplings – Power Ratings
Coupling Size
Speed
rev/min F40 F50 F60 F70 F80 F90 F100 F110 F120 F140 F160 F180 F200 F220 F250
100 0,25 0,69 11,33 2,62 113,93 5,24 7,07 9,16 113,9 124,3 139,5 165,7 97,6 121 154
200 0,50 1,38 12,66 5,24 117,85 110,5 114,1 118,3 127,9 148,7 179,0 131 195 243 307
300 0,75 2,07 13,99 7,85 111,8 115,7 121,2 127,5 141,8 173,0 118 197 293 364 461
400 1,01 2,76 15,32 10,5 15,7 120,9 128,3 136,6 155,7 197,4 158 263 1391 486 615
500 1,26 3,46 16,65 13,1 19,6 126,2 135,3 145,8 169,6 122 197 328 1488 607 768
600 1,51 4,15 17,98 15,7 23,6 131,4 142,4 155,0 183,6 146 237 394 1586 729 922
700 1,76 4,84 19,31 18,3 27,5 136,6 149,5 164,1 197,5 170 276 460 1684 850 1076
720 1,81 4,98 19,57 18,8 28,3 137,7 150,9 166,0 100 175 284 473 1703 875 1106
800 2,01 5,53 10,6 20,9 31,4 141,9 156,5 173,3 111 195 316 525 1781 972 1229
900 2,26 6,22 12,0 23,6 35,3 147,1 163,6 182,5 125 219 355 591 1879 1093 1383
960 2,41 6,63 12,8 25,1 37,7 150,3 167,9 188,0 134 234 379 630 1937 1166 1475
1000 2,51 6,91 13,3 26,2 39,3 152,4 170,7 191,6 139 243 395 657 1976 1215 1537
1200 3,02 8,29 16,0 31,4 47,1 162,8 184,8 110 167 292 474 788 1172
1400 3,52 9,68 18,6 36,6 55,0 173,3 199,0 128 195 341 553 919
1440 3,62 9,95 19,1 37,7 56,5 175,4 102 132 201 351 568 945
1600 4,02 11,1 21,3 41,9 62,8 183,8 113 147 223 390 632
1800 4,52 12,4 23,9 47,1 70,7 194,2 127 165 251 438
2000 5,03 13,8 26,6 52,4 78,5 105,5 141 183 279
2200 5,53 15,2 29,3 57,6 86,4 115 155 202
2400 6,03 16,6 31,9 62,8 94,2 126 170
2600 6,53 18,0 34,6 68,1 102 136 184
2800 7,04 19,4 37,2 73,3 110 147
2880 7,24 19,9 38,3 75,4 113 151
3000 7,54 20,7 39,9 78,5 118 157
3600 9,05 24,9 47,9 94,2
PHYSICAL CHARACTERISTICS – FLEXIBLE TYRES
Coupling Size
The figures in heavier type are for standard
motor speeds. All these power ratings are
calculated at constant torque. For speeds
below 100 rev/min and intermediate
speeds use nominal torque ratings.
Characteristics F40 F50 F60 F70 F80 F90 F100 F110 F120 F140 F160 F180 F200 F220 F250
Maximum speed rev/min 4500 4500 4000 3600 3100 3000 2600 2300 2050 1800 1600 1500 1300 1100 1000
Nominal Torque Nm TK N 24 66 127 250 375 500 675 875 1330 2325 3770 6270 9325 11600 14675
Maximum Torque Nm TK MAX 64 160 318 487 759 1096 1517 2137 3547 5642 9339 16455 23508 33125 42740
Torsional Stiffness Nm/ O 5 13 26 41 63 91 126 178 296 470 778 1371 1959 2760 3562
Max, parallel misalignment mm 1,1 1,3 1,6 1,9 2,1 2,4 2,6 2,9 3,2 3,7 4,2 4,8 5,3 5,8 6,6
Maximum end float mm ± 1,3 1,7 2,0 2,3 2,6 3,0 3,3 3,7 4,0 4,6 5,3 6,0 6,6 7,3 8,2
Approximate mass, kg
Alternating Torque ± Nm
0,1 0,3 0,5 0,7 1,0 1,1 1,1 1,4 2,3 2,6 3,4 7,7 8,0 10 15
@ 10Hz TKW 11 26 53 81 127 183 252 356 591 940 1556 2742 3918 5521 7124
Resonance Factor V R 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
Damping Coefficient Ψ 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9 0,9
Maximum torque figures should be regarded as short duration overload ratings for use in such circumstances as direct-on-line starting.
All flexible tyres have an angular misalignment capacity up to 4 o .
FLEXIBLE TYRE CODE NUMBERS
Unless otherwise specified Fenaflex
flexible tyres will be supplied in a
natural rubber compound which is
suitable for operation in temperatures –
50 O C to +50 O C. A chloroprene compound
is available which is Fire Resistant and
Anti-Static (F.R.A.S) and has greater
resistance to heat and oil.
This is suitable for operation in
temperatures –15 O C to +70 O C. For
temperatures outside these ranges –
consult Fenner Power Transmission
Distributor.
Coupling
Size
F40*
F50*
F60*
F70
F80
F90
F100
F110
F120
F140
F160
F180
F200
F220
F250
M
Dimension
(mm)
11
12,5
16,5
11,5
12,5
13,5
13,5
12,5
14,5
16
15
23
24
27,5
29,5
Gap
Between
Tyre Ends
(mm)
2
2
2
3
3
3
3
3
3
5
5
6
6
6
6
Clamping
Screw
Torque
(Nm)
15
15
15
24
24
40
40
40
50
55
80
105
120
165
165
Screw
Size
M6
M6
M6
M8
M8
M10
M10
M10
M12
M12
M16
M16
M16
M20
M20
*Hexagonal socket caphead clamping screws on these sizes.
Drive Couplings 195
DRIVE
COUPLINGS

DRIVE
COUPLINGS
R
Fenaflex Couplings – Dimensions
FLANGES
DIMENSIONS OF FENAFLEX FLANGES TYPES B, F & H
Bush
Max Bore Types F & H Type B
Screw
Size Type No.
# Metric Inch L E J† L E
over
Key
A C D F G§ M Mass*
(kg)
Inertia*
(kgm2 )
F40 B – 32 – – – 29 33 22 M5 104 82 – – – 11 0,8 0, 00074
F40 F 1008 25 1 " 33 22 29 – – – 104 82 – – – 11 0,8 0, 00074
F40 H 1008 25 1 " 33 22 29 – – – 104 82 – – – 11 0,8 0, 00074
F50 B – 38 – – – 38 45 32 M5 133 100 79 – – 12 ,5 1,2 0, 00115
F50 F 1210 32 1 1 F50 H 1210 32
/4"
1
38 25 38 – – – 133 100 79 – – 12 ,5 1,2 0, 00115
1 /4" 38 25 38 – – – 133 100 79 – – 12 ,5 1,2 0, 00115
F60
F60
B
F
–
1610
45
42
–
1
– – 38 55 38 M6 165 125 70 – – 16 ,5 2,0 0, 0052
5 /8" 42 25 38 – – – 165 125 103 – – 16 ,5 2,0 0, 0052
F60 H 1610 42 1 5 /8" 42 25 38 – – – 165 125 103 – – 16 ,5 2,0 0, 0052
F70 B – 50 – – – – 47 35 M10 187 144 80 50 13 11 ,5 3,1 0, 009
F70
F70
F
H
2012
1610
50
42
2 "
1
44 32 42 – – – 187 144 80 50 13 11 ,5 3,1 0, 009
5 /8" 42 25 38 – – – 187 144 80 50 13 11 ,5 3,0 0, 009
F80
F80
B
F
–
2517
60
60
–
2
– – – 55 42 M10 211 167 98 54 16 12 ,5 4,9 0, 018
1 /2" 58 45 48 – – – 211 167 97 54 16 12 ,5 4,9 0, 018
F80 H 2012 50 2 " 45 32 42 – – – 211 167 98 54 16 12 ,5 4,6 0, 017
F90 B – 70 – – – – 63,5 49 M12 235 188 112 60 16 13 ,5 7,1 0, 032
F90 F 2517 60 2 1 /2" 59,5 45 48 – – – 235 188 108 60 16 13 ,5 7,0 0, 031
F90 H 2517 60 2 1 /2" 59,5 45 48 – – – 235 188 108 60 16 13 ,5 7,0 0, 031
F100 B – 80 – – – – 70,5 56 M12 254 216 125 62 16 13 ,5 9,9 0, 055
F100
F100
F
H
3020
2517
75
60
3 "
2
65,5 51 55 – – – 254 216 120 62 16 13 ,5 9,9 0, 055
1 /2" 59,5 45 48 – – – 254 216 113 62 16 13 ,5 9,4 0, 054
F110
F110
B
F
–
3020
90
75
–
3 "
–
63,5
–
51
–
55
75,5
–
63
–
M12
–
279
279
233
233
128
134
62
62
16
16
12 ,5
12 ,5
12,5
11,7
0, 081
0, 078
F110 H 3020 75 3 " 63,5 51 55 – – – 279 233 134 62 16 12 ,5 11,7 0, 078
F120 B – 100 – – – – 84,5 70 M16 314 264 143 67 16 14 ,5 16,9 0, 137
F120 F 3525 100 4 " 79,5 65 67 – – – 314 264 140 67 16 14 ,5 16,5 0, 137
F120 H 3020 75 3 " 65,5 51 55 – – – 314 264 140 67 16 14 ,5 15,9 0, 130
F140 B – 130 – – – – 110,5 94 M20 359 311 178 73 17 16 22,2 0, 254
F140
F140
F
H
3525
3525
100
100
4 "
4 "
81,5
81,5
65
65
67
67
–
–
–
–
–
–
359
359
311
311
178
178
73
73
17
17
16
16
22,3
22,3
0, 255
0, 255
F160
F160
B
F
–
4030
140
115
–
4
– – – 117 102 M20 402 345 187 78 19 15 35,8 0, 469
1 /2" 92 77 80 – – – 402 345 197 78 19 15 32,5 0, 380
F160 H 4030 115 4 1 /2" 92 77 80 – – – 402 345 197 78 19 15 32,5 0, 380
F180 B – 150 – – – – 137 114 M20 470 398 200 94 19 23 49,1 0, 871
F180 F 4535 125 5 " 112 89 89 – – – 470 398 205 94 19 23 42,2 0, 847
F180 H 4535 125 5 " 112 89 89 – – – 470 398 205 94 19 23 42,2 0, 847
F200 B – 150 – – – – 138 114 M20 508 429 200 103 19 24 58,2 1, 301
F200
F200
F
H
4535
4535
125
125
5 "
5 "
113
113
89
89
89
89
–
–
–
–
–
–
508
508
429
429
205
205
103
103
19
19
24
24
53,6
53,6
1, 281
1, 281
F220
F220
B
F
–
5040
160
125
–
5 "
–
129,5
–
102
–
92
154,5
–
127
–
M20
–
562
562
474
474
218
223
118
118
20
20
27 ,5
27 ,5
79,6
72,0
2, 142
2, 104
F220 H 5040 125 5 " 129,5 102 92 – – – 562 474 223 118 20 27 ,5 72,0 2, 104
F250 B – 190 – – – – 161,5 132 M20 628 532 254 125 25 29 ,5 104,0 3, 505
Dimensions in millimetres unless otherwise stated.
§ G is the amount by which clamping screws need to be withdrawn to release tyre.
† J is the wrench clearance to allow for tightening/loosening the bush on the shaft and the clamp ring screws on sizes F40, F50 and F60. The use of a shortened
wrench will allow this dimension to be reduced.
M is half the distance between flanges. Shaft ends, although normally located twice M apart, can project beyond the flanges as shown. In this event
allow sufficient space between shaft ends for end float and misalignment.
* Mass and inertia figures are for single flange with mid range bore and include clamping ring, screws and washers and half tyre.
‡ For pilot bore 'B' flange code as listed.
Flanges are also available finish bored with keyway if required.
Bore must be specified on order.
# Note: On sizes F70, 80, 100 and 120 the 'F' direction bush is larger than that in the 'H'direction.
196 Drive Couplings

Comprising a Fenaflex tyre coupling (size
F40–F140) complete with a spacer flange
designed for use on applications where it is
an advantage to be able to move either
shaft axially without disturbing the driving or
driven machine (e,g, centrifugal pump
rotors), Fenaflex spacer couplings are
primarily designed for standard distance
between shaft end dimensions 100, 140 and
180mm.
DISTANCE BETWEEN SHAFT ENDS
R
Fenaflex Spacer Couplings
SELECTION
1. Select a suitable size of Fenaflex
coupling using the method shown on
page 194. Read down the first column
in table below and locate the size of
coupling selected.
2. Read across until the required distance
between shaft ends can be
accommodated.
3. Note the required spacer coupling
designation at head of column.
4. Check from the Spacer Coupling
Dimensions table below that the
selected spacer/coupling combination
can accommodate the machine shaft
size.
Note
Typical order consists of
1 x Spacer 3 x Taper Lock bushes
2 x Fenaflex flanges 1 x Fenaflex tyre
SM12 SM16
Distance between Shaft Ends (mm)
SM25 SM30 SM35
Size 80 (100) 100 140 100 140 180 140 180 140 180
Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max
F40 80 100 100 113 140 150
F50 100 116 140 156
F60 100 124 140 164
F70 100 114 140 154 180 194
F80 100 117 140 157 180 197
F90 140 158 180 198
F100 140 158 180 198
F110 140 156 180 196
F120 140 160 180 200
F140
Note: Alternative distances between shaft ends may be accommodated. Consult Fenner Power Transmission Distributor.
140 163 180 203
SPACER COUPLING DIMENSIONS
Spacer Max. Bore Fenaflex Max. Bore
Nom Bush Bush
Spacer DBSE Fenaflex Size mm Inch Size mm Inch A B C D E F G H J K L M S T
SM12 80 F40 1210 32 1 1 /4" 1008 25 1 " 104 82 118 83 134 25 14 15 14 6 65 22 77 25
SM12 100 F40 1210 32 1 1 /4" 1008 25 1 " 104 82 118 83 140 25 14 15 14 22 77 22 77 25
SM16 100 F40* 1610 42 1 5 /8" 1008 25 1 " 104 82 127 80 157 25 18 15 14 9 88 22 94 32
SM16 140 F40* 1610 42 1 5 /8" 1008 25 1 " 104 82 127 80 187 25 18 15 14 9 128 22 134 32
SM16 100 F50 1610 42 1 5 /8" 1210 32 1 1 /4" 133 79 127 80 160 25 18 15 14 9 85 25 94 32
SM16 140 F50 1610 42 1 5 /8" 1210 32 1 1 /4" 133 79 127 80 200 25 18 15 14 9 125 25 134 32
SM16 100 F60 1610 42 1 5 /8" 1610 42 1 5 /8" 165 70 127 80 161 25 18 15 14 9 78 33 94 32
SM16 140 F60 1610 42 1 5 /8" 1610 42 1 5 /8" 165 70 127 80 201 25 18 15 14 9 118 33 134 32
SM25 100 F70† 2517 60 2 1 /2" 2012 50 2 " 187 80 178 123 180 45 22 16 14 9 80 23 94 48
SM25 140 F70† 2517 60 2 1 /2" 2012 50 2 " 187 80 178 123 220 45 22 16 14 9 120 23 134 48
SM25 180 F70† 2517 60 2 1 /2" 2012 50 2 " 187 80 178 123 260 45 22 16 14 9 160 23 174 48
SM25 100 F80 2517 60 2 1 /2" 2517 60 2 1 /2" 211 95 178 123 193 45 22 16 14 9 78 25 94 48
SM25 140 F80 2517 60 2 1 /2" 2517 60 2 1 /2" 211 95 178 123 233 45 22 16 14 9 118 25 134 48
SM25 180 F80 2517 60 2 1 /2" 2517 60 2 1 /2" 211 95 178 123 273 45 22 16 14 9 158 25 174 48
SM25 140 F90 2517 60 2 1 /2" 2517 60 2 1 /2" 235 108 178 123 233 45 22 16 14 9 116 27 134 48
SM25 180 F90 2517 60 2 1 /2" 2517 60 2 1 /2" 235 108 178 123 273 45 22 16 14 9 156 27 174 48
SM30 140 F100 3020 75 3 " 3020 75 3 " 254 120 216 146 245 51 29 20 17 9 116 27 134 60
SM30 180 F100 3020 75 3 " 3020 75 3 " 254 120 216 146 285 51 29 20 17 9 156 27 174 60
SM30 140 F110 3020 75 3 " 3020 75 3 " 279 134 216 146 245 51 29 20 17 9 118 25 134 60
SM30 180 F110 3020 75 3 " 3020 75 3 " 279 134 216 146 285 51 29 20 17 9 158 25 174 60
SM35 140 F120† 3525 100 4 " 3525 100 4 " 314 140 248 178 272 63 34 20 17 9 114 29 134 80
SM35 180 F120† 3525 100 4 " 3525 100 4 " 314 140 248 178 312 63 34 20 17 9 154 29 174 80
SM35 140 F140 3525 100 4 " 3525 100 4 " 359 178 248 178 271 63 34 20 17 9 111 32 134 80
SM35 180 F140 3525 100 4 " 3525 100 4 " 359 178 248 178 312 63 34 20 17 9 151 32 174 80
Note: Larger sizes of spacer coupling can be manufactured to order. Consult Fenner Power Transmission Distributor.
* F40 'B' Flange must be used to fit spacer shaft.
† 'F' Flange must be used to fit spacer shaft.
Drive Couplings 197
DRIVE
COUPLINGS

DRIVE
COUPLINGS
R
Fenaflex Spacer Couplings
NB. To select the Fenaflex ® coupling size, this page must be used in conjunction with page 194, then check that spacer flange will suit
required distance between shaft ends (D.B.S.E.).
PHYSICAL DIMENSIONS:- F40 R12 to F60 R16 F70 R25 to F200 R50
Spacer lengths
The spacer lengths shown are the minimum
possible. Longer spacers can be supplied to
special order.
Coupling
Size
Bush
No.
F40 RM12 1008 25 1210 32 105 118 163 104 – 22 37 – – 40 – 3
F50 RM16 1210 32 1615 42 133 127 174 111 – 25 38 37 – 44 – 5
F60 RM16 1610 42 1615 42 165 127 183 120 191 25 38 37 – 44 115 8
F70 RM25 1610 42 2517 60 187 178 203 133 183 25 45 – – 56 106 11
F70 RM25 F 2012 50 2517 60 187 178 210 133 183 32 45 – – 56 106 11
F80 RM25 F 2517 60 2517 60 211 178 232 142 283 45 45 – – 59 200 12
F80 RM25 2012 50 2517 60 211 178 219 142 283 33 45 – – 59 200 12
F90 RM30 2517 60 3030 75 235 216 284 163 283 45 76 – – 71 191 21
F100 RM30 2517 60 3030 75 254 216 290 169 282 45 76 – – 75 188 23
F100 RM30 F 3020 75 3030 75 254 216 296 169 282 51 76 – – 75 188 23
F110 RM30 3020 75 3030 75 279 216 298 170 282 51 76 – – 76 187 26
F120 RM35 F 3525 100 3535 90 314 248 334 180 282 66 89 – – 78 187 35
F120 RM35 3020 75 3535 90 314 248 320 180 282 51 89 – – 78 187 35
F140 RM40 3525 100 4040 100 359 298 370 203 449 65 102 – 14 87 133 59
F160 RM45 4030 115 4545 110 402 330 416 224 449 77 115 – 16 98 325 92
F200 RM50 4535 125 5050 125 508 362 505 289 – 89 127 – 16 130 – –
+ l6 Amount by which clamping screws need to be withdrawn to release tyre.
§ l2 is the normal distance between shafts. End float which increases or decreases this distance by a slight amount is permissible.
ø l2 Alternative spacer available ex-stock.
* l5 is the wrench clearance necessary to tighten or slacken clamping ring screws.
F Extended length when using F Flanges, (F70, 80, 100 & 120 sizes only).
‡ These values include Rigid Half & Standard Spacer with Clamping Ring Only.
Sizes F40 R12 through F100 R30 are normally carried in stock.
198 Drive Couplings
Fenaflex End
Max
Bore
Rigid End
Bush
No.
Max
§ ø
Bore d 1 d 2 l 1 l 2 l 2 l 3 l 4
*
l 5
+
l 6 l 7 l 7
‡
mass kg

TABLE 4: POWER RATINGS (kW) FOR FLEXIBLE ELEMENTS
R
Fenaflex High Speed Coupling
Speed
Size
(r/min) 87
96 116 131 172 192 213 252
100 2,5 3,4 6,2 7,9 20,1 36,6 67,2 116
720 18,0 24,5 44,6 56,9 145 264 484 835
960 24,0 32,6 59,5 75,8 193 351 645 1114
1000 25,0 34,0 62,0 79,0 201 366 672 1160
1200 30,0 40,8 74,4 94,8 241 439 806 1392
1400 35,0 47,6 86,8 111 281 512 941 1624
1440 36,0 49,0 89,3 114 289 527 968 1670
1600 40,0 54,4 99,2 126 322 586 1075 1856
1800 45,0 61,2 111 142 362 659 1210 2088
2000 50,0 68,0 124 158 402 732 1344
2200 55,0 74,8 136 174 442 805
2400 60,0 81,6 149 190 482
2600 65,0 88,4 161 205
2800 70,0 95,2 174 221
2880 72,0 98,0 179 228
3000 75,0 102 186 237
3200 80,0 109 198 253
3400 85,0 116 211
3600 90,0 122 223
3800 95,0 129
4000 100 136
4200 105 143
4400 110 150
4600 115
4800 120
For speeds below 100 r/min and intermediate speeds use normal torque ratings.
The figures in heavier type are for
standard motor speeds.
X FLANGES (Steel) — REVERSIBLE TO PROVIDE H or F TAPER-LOCK ® BUSH FITTINGS
TABLE 4: POWER RATINGS (kW) FOR FLEXIBLE ELEMENTS
‘X’
Flange
Size
Max
Speed
(r/min)
Torque
(N.m)
Normal Max
Moment
of
Inertia
m.r 2
(kg.m 2 )
Torsional
Stiffness
(N.m/ o )
Max
Mis-alignment
Parallel
End
± Float
87 4800 239 716 0,046 07 60 0,5 0,4 2012 50 240 90 90 32 26 20 42 20 6,0 0,6
96 4400 325 974 0,089 77 81 0,6 0,4 2517 60 262 110 110 44 30 29 48 25 8,3 0,9
116 3600 592 1776 0,016 98 148 0,7 0,5 2517 60 313 110 110 44 30 29 48 25 11,0 1,0
131 3200 754 1263 0,360 23 189 0,8 0,6 2517 60 351 110 110 44 39 29 48 25 16,0 1,7
172 2400 1919 5758 1,173 48 480 1,0 0,8 3525 90 465 180 180 65 41 40 67 40 34,0 3,3
192 2200 3495 10485 1,951 70 874 1,2 0,9 4040 100 516 190 190 101 46 47 80 69 49,0 3,6
ø213 2000 6417 19251 3,565 09 1604 1,3 1,0 4545 110 572 200 199 114 70 56 89 74 55,0 6,2
ø252 1800 11405 33137 7,605 50 2.761 1,6 1,2 5050 125 673 230 220 127 60 56 92 87 78,0 13,0
§ Mass is for X Flange with mid-range bore Taper-Lock ® Bush.
All couplings have an angular mis-alignment capacity up to 1 o .
Maximum torque figures should be regarded as short duration overload ratings for use in such circumstances as direct-on-line starting.
ø Ex import only.
Coupling
Size
Companion
Flange
Size
Bush
No.
Dimensions - Assembled High Speed Couplings
H Flanges F Flanges B Flanges
Bush No. Max Bore l 1 Bush No. Max Bore l 1
Max
Bore d 1 d 2 d 3 l 5 l 6 l 7 l 8 l 9
Bore Min/
Max
Approx. Mass
(kg)§
X
Flange Element
D.B.S.E. Flange
reversed
l 2 l 3 l 4 H F
87X F70 1610 42 65 2012 50 67 38/50 70 73 35 23 23
96X F80 2012 50 72 2517 60 85 42/60 82 81 40 25 21
116X F100 2517 60 86 3020 75 92 48/80 89 89 41 26 22
131X F110 3020 75 106 3020 75 106 48/90 118 102 55 40 36
172X F140 3525 90 133 3525 90 133 60/130 162 121 68 43 43
192X F160 4030 115 153 4030 115 153 65/140 178 137 76 22 44
213X F180 4535 125 193 4535 125 193 70/150 218 175 104 46 64
252X F220 5040 125 234 5040 125 234 80/160 259 222 132 61 92
Drive Couplings 199
DRIVE
COUPLINGS

DRIVE
COUPLINGS
R
Fenaflex Flywheel Couplings
Designed to fit standard SAE and other popular flywheel configurations, these couplings use chloroprene
flexible elements and employ standard B, F or H type driven flanges.
DIMENSIONS
Driving Flange — W (Bolt ring) Driven Flanges — Through Bore and Taper-Lock ® — F & H
Bolts†
Thread Mass Inertia Max Screw Mass Inertia
Size PCD Type A H (kg) (kg m 2 ) Size Type Bush Bore C D E F G J†† L M Over Key (kg) (kg m 2 )
F70 B – 50 144 80 35 73 13 – 70 35 M10 3,1 0,009
8XM8
87 8,750" 240 26 1,41 0,016 F70 F 2012 50 144 80 32 73 13 42 67 35 – 3,1 0,009
8x5/16UNC F70 H 1610 42 144 80 30 73 13 38 65 35 – 3,0 0,009
F80 B — 60 167 97 42 81 16 — 82 40 M10 4,9 0,018
6xM10
96 9,625" 262 30 1,87 0,025 F80 F 2517 60 167 95 45 81 16 48 85 40 — 4,9 0,018
6x3/8UNC F80 H 2012 50 167 95 32 81 16 42 72 40 — 4,6 0,017
F100 B — 80 216 125 48 89 16 — 86 41 M12 9,9 0,055
112 11,250" 8x 7/16UNF 305 32 2,49 0,048 F100 F 3020 75 216 120 51 89 16 55 89 41 — 7,0 0,031
F100 H 2517 60 216 113 45 89 16 48 83 41 — 7,0 0,031
8xM10 F100 B — 80 216 125 48 89 16 — 89 41 M12 9,9 0,055
116 11,625" 8x 3/8UNC 313 30 2,51 0,051 F100 F 3020 75 216 120 51 89 16 55 92 41 — 9,9 0,055
8x 3/8BSF F100 H 2517 60 216 113 45 89 16 48 86 41 — 9,4 0,054
F110 B — 90 233 128 63 102 16 — 118 55 M12 12,5 0,081
8xM10
131 13,125" 351 39 3,71 0,094 F110 F 3020 75 233 134 51 102 16 55 106 55 — 11,7 0,078
8x3/8UNC F110 H 3020 75 233 134 51 102 16 55 106 55 — 11,7 0,078
F110 B — 90 233 128 63 102 16 — 120 57 M12 12,5 0,081
135 13,500" 6x 3/8UNC 364 37 4,16 0,113 F110 F 3020 75 233 134 51 106 16 55 108 57 — 11,7 0,078
F110 H 3020 75 233 134 51 106 16 55 108 57 — 11,7 0,078
F140 B — 130 311 178 94 121 17 — 162 68 M20 22,2 0,254
8xM12
172 17,250" 465 41 7,10 0,320 F140 F 3525 100 311 178 65 121 17 67 133 68 — 22,3 0,255
8x1/2UNC F140 H 3525 100 311 178 65 121 17 67 133 68 — 22,3 0,255
All dimensions in millimetres unless otherwise stated.
Driving flange mass & inertia given are for the bolt ring, bolts and half of the element.
Driven flange mass & inertia given are for an assembled flange having a mid range bore or bush and half the element.
†† J is the wrench clearance to allow for tightening/loosening the bush. A shortened wrench will allow this dimension to be reduced.
200 Drive Couplings
†W FLANGE—
bolt holes are equi-spaced except size
135W shown

Example: Part No. = X87
R
Fenaflex Flywheel Couplings
FENAFLEX ELEMENTS—PHYSICAL CHARACTERISTICS AND POWER RATINGS
Normal Maximum Maximum Damping Dynamic
Coupling Torque Torque Alternating
Resonance
Energy Stiffness Power at * Power at *
Size (Nm) (Nm) Torque (Nm)
Factor
Ratio (Nm/rad) 1500 rev/min 1800 rev/min
VR ψ CTdyn (kW) (kW)
T KN T KMAX ± T KW
87 239 717 120 7 0,9 3427 37,5 45,0
96 325 975 163 7 0,9 4653 51,0 61,2
112 592 1776 158 7 0,9 3392 93,0 111,5
116 592 1776 296 7 0,9 8480 93,0 111,5
131 754 2262 377 7 0,9 10801 118 142
135 754 2262 201 7 0,9 4320 118 142
172 1919 5757 960 7 0,9 27492 301 362
Selection of Fenaflex flywheel couplings should take account of design power (using Service Factors on page 194) and speed,
and also the torsional characteristics of the coupled machines – consult Fenner Power Transmission Distributor.
* Power ratings at other speeds directly proportional to these values.
All Fenaflex Couplings – Ordering Instructions
SHAFT TO SHAFT COUPLING
USING FLEXIBLE TYRE.
Consists of:
2–Flanges
T/L bushes for F and H flanges only
1–Flexible tyre
EXAMPLE ORDER
Fenaflex coupling F90BH comprising:
1–F90B flange bored 70mm (coded at
time of order).
1–F90H flange
1–2517 T/L bush (bore 35mm)
1–F90 Flexible tyre (Natural)
FENAFLEX SPACER COUPLING
Consists of a standard Fenaflex coupling
(using B, F or H flanges as desired)
together with a spacer flange and a third
Taper Lock bush.
EXAMPLE ORDER
Fenaflex spacer assembly
F110FF–SM30/140 comprising:
2–F110F flanges
1–F110 flexible tyre
1–SM30 x 140mm spacer flange
1–3020 T/L bush to suit motor shaft
1–3020 x 60mm T/L bush
1–3030 T/L bush to suit driven shaft
FENAFLEX FLYWHEEL COUPLING
Consists of:
1–Driving (W) flange
1–Bolt pack
1–Flexible element (above)
1–Driven flange
1–T/L bush to suit driven shaft (F & H driven
flanges only)
Drive Couplings 201
DRIVE
COUPLINGS

DRIVE
COUPLINGS
R
Fenaflex Flywheel Couplings
INSTALLATION INSTRUCTIONS
Note: Satisfactory performance depends on
correct installation and maintenance. All
instructions must therefore be followed
carefully.
1. Thoroughly clean all components, paying
particular attention to the removal of the
protective coating in the bore of the driven
flange.
2. Slip bolt ring, clamping, and then element
(with large diameter facing flywheel) onto
driven shaft. Fit flange to shaft. (Where a
Taper Lock ® bush). Locate flange on shaft
so that dimension M will be achieved on
assembly (see paragraph 3).
3. Bring driven shaft into line with flywheel
until dimension M is correct (see table). If
shaft end float is to occur, locate driven shaft
at mid position of end float when checking
dimension M. Note that driven shaft may
project beyond the face of the flange if
required. In this event, allow sufficient
space between shaft end and flywheel for
end float and misalignment.
4. Accurately align driven shaft with flywheel.
Check both parallel and angular alignment
by mounting a dial indicator near the outside
diameter of the flange (as shown) and
rotating the flywheel through 360 o . Indicator
readings for both parallel and angular
alignment should not exceed the values
given in the table overleaf. Then bolt driven
machine in place.
5. Place flexible element and bolt ring* in
position, fit screws finger tight. Place
clamping ring in position and fit screws
finger tight.
6. Working alternately and evenly round each
flange, tighten each screw (approx. 1 / 2 turn)
until the required screw torques are
achieved – see table.
Element Size
M
Lr
Maximum
Indicator
Reading
Flange Size
Screw
Bolt Ring Nm
Torques
Clamping Ring Nm
† For 213W Flywheel coupling M - 104 mm when adaptor ring fitted, see diagram.
Note: It may be necessary to back off the shaft to allow room to remove and replace the
flexible element.
202 Drive Couplings
mm
mm
mm
Flywheel
Flywheel
M
Ferrule
Bolt Ring
Flexible
Element
Clamping
Ring
Bolt Ring
Adaptor Ferrule
Bolt Ring
213W only
Flange
Flange
87 96 112 116 131 135 172 192 213 252
35 40 42 42 53 57 69 76 86† 132
– – – – 91 93 112 123 156 200
0,51 0,63 0,76 0,76 0,89 0,89 1,14 1,27 1,40 1,52
F70 F80 F100 F100 F110 F110 F140 F160 F180 F220
24 32 32 32 32 32 35 35 54 75
24 24 32 32 32 32 35 55 55 140
WHR and WBR Configurations
These flanges are available for use in
applications where close-couplings is essential.
It should be noted that the coupling must be
assembled on the driven machine shaft before
offering the driven machine up to the engine,
i.e. First place bolt ring on driven shaft then fit
driven flange, element and clamping ring. Take
care to position the driven flange so that the
correct dimension Lr will be achieved on
assembly (see table). Tighten the clamping ring
screws alternately and evenly ( 1 / 2 turn each) until
the required screw torques are achieved. After
the two machines are brought together the bolt
ring screws should be inserted and tightened
alternately are achieved.
• On size 213W only, place bolt ring adaptor
between flexible element and flywheel. Line up
unthreaded holes in adaptor with threaded holes
in flywheel and fit the 6 long screws into these
holes. Fix the 6 short screws in the other holes.
LR
ASSEMBLY WHR
LR
ASSEMBLY WBR

These semi-elastic couplings designed for general purpose use, permit quick and easy assembly by means of Taper-
Lock ® bush fixing.
Fully machined outside diameters allow alignment by simple straight edge methods.
Shaft connection is "fail safe" due to interacting dog design.
SELECTION
(a) Service Factor
Determine appropriate Service Factor
from table below
(b) Design Power
Multiply running power of driven
machinery by the service factor. This
gives the design power which is used
as a basis for coupling selection.
(c) Coupling Size
Refer to Power Ratings table below
and read across from the appropriate
speed until a power equal to or greater
than the design power is found. The
size of coupling is given at the head of
that column.
SERVICE FACTORS
(d) Bore Size
From Dimensions table on page 204
check that the required bores can be
accommodated.
EXAMPLE
A shaft coupling is required to transmit
70kW between a 1200 rev/min diesel
engine and a hoist running over 16hrs/day.
Engine shaft is 70mm and the hoist shaft is
75mm.
(a) Service Factor
The appropriate service factor is 2,5.
(b) Design Power
Design power 70 x 2,5=175kW.
SPECIAL CASES
For applications where substantial shock, vibration and torque fluctuation occur, and
for reciprocating machines e.g. internal combustion engines, piston type pumps and
compressors, refer to Fenner Power Transmission Distributor with full machine details
for torsional analysis.
(c) Coupling Size
Reading across from 1200 rev/min in
the speed column of Power Ratings
table below, 251kW is the first power
to exceed the required 175kW (design
power). The size of the coupling at the
head of this column is 230.
(d) Bore Size
The Dimensions table (page 204)
shows that both shaft diameters are
within the bore range available.
Type of Driving Unit
Electric Motors
Internal Combustion Engines
Steam Engines
Steam Turbines Water Turbines
Hours per day duty Hours per day duty
over 8 over 8
8 and to 16 over 8 and to 16 over
Driven Machine Class under inclusive 16 under inclusive 16
UNIFORM
Brewing machinery, Centrifugal blowers, Centrifugal compressors†,
Conveyors, Centrifugal fans and pumps, Generators, Sewage disposal equipment.
MODERATE SHOCK*
Agitators, Clay working machinery, Crane hoists, Laundry machinery, Wood working
1,00 1,12 1,25 1,25 1,40 1,60
machinery, Machine tools, Rotary mills, Paper mill machinery, Textile machinery,
Non-unifomly loaded centrifugal pumps.
HEAVY SHOCK*
Reciprocating conveyors, Crushers, Shakers, Metal mills, Rubber machinery (Banbury
1,60 1,80 2,00 2,00 2,24 2,50
mixers and mills), Reciprocating compressors, Welding sets. 2,50 2,80 3,12 3,12 3,55 4,00
* It is recommended that keys (with top clearance if in Taper-Lock ® bushes) are fitted for applications where load fluctuation is expected.
† For Centrifugal Compressors multiply Service Factor by an additional 1,15.
POWER RATINGS (kW)
HRC Couplings
Speed
rev/min
Coupling Size
70 90 110 130 150 180 230 280
100
200
400
0,33
0,66
1,32
0,84
1,68
3,35
1,68
3,35
6,70
3,30
6,60
13,2
6,28
12,6
25,1
9,95
19,9
39,8
20,9
41,9
83,8
33,0
65,0
132
600
720
800
1,98
2,37
2,64
5,03
6,03
6,70
10,1
12,1
13,4
19,8
23,8
26,4
37,7
45,2
50,3
59,7
71,6
79,6
126
151
168
198
238
264
960
1200
1440
3,17
3,96
4,75
8,04
10,1
12,1
16,1
20,1
24,1
31,7
39,6
47,5
60,3
75,4
90,5
95,5
119
143
201
251
302
317
396
475
1600
1800
2000
5,28
5,94
6,60
13,4
15,1
16,8
26,8
30,2
33,5
52,8
59,4
66,0
101
113
126
159
179
199
335
377
419
528
594
660
2200
2400
2600
7,26
7,92
8,58
18,4
20,1
21,8
36,9
40,2
43,6
72,6
79,2
85,8
138
151
163
219
239
259
461
503
545
726
2880
3000
3600
9,50
9,90
11,9
24,1
25,1
30,1
48,3
50,3
60,3
95
99
118
181
188
226
286
298
Nominal Torque (Nm) 31,5 80 160,30 315 600 950 2000 3150
Max Torque (Nm) 72 180 360,30 720 1500 2350 5000 7200
For speeds below 100 rev/min and intermediate speeds use nominal torque ratings.
* Maximum coupling speeds are calculated using an allowable peripheral speed for the hub material. For selection of smaller sizes with speeds in excess of
3600 rev/min – Consult Fenner Power Transmission Distributor.
Drive Couplings 203
DRIVE
COUPLINGS

DRIVE
COUPLINGS
HRC Couplings – Dimensions
Example: Part No. = HRC70
PHYSICAL DIMENSIONS AND CHARACTERISTICS
204 Drive Couplings
Common Dimensions Type F & H Type B
Size A B E F ‡ 1 G
Bush
size
Max. Bore
mm ins. C D J†
Bore Dia's
Pilot
Max. H9
Screw
over key C D
70 69 60 31 25,5 18,5 1008 25 1" 20,0 23,5 29 32 8 M 6 20 23,5
90 85 70 32 30,5 22,5 1108 28 11 /8 19,5 23,5 29 42 10 M 6 26 30,5
110 112 100 45 45,5 29,5 1610 42 15 /8 18,5 26,5 38 55 10 M10 37 45,5
130 130 105 50 53,5 36,5 1610 42 15 /8 18,0 26,5 38 60 15 M10 39 47,5
150 150 115 62 60,5 40,5 2012 50 2 23,5 33,5 42 70 20 M10 46 56,5
180 180 125 77 73,5 49,5 2517 60 21 /2 34,5 46,5 48 80 25 M10 58 70,5
230 225 155 99 85,5 59,5 3020 75 3 39,5 52,5 55 100 25 M12 77 90,5
280 275 206 119 105,5 74,5 3525 100 4 51,0 66,5 67 115 30 M16 90 105,5
† 'J' is the wrench clearance required for tightening/loosening the bush on the shaft. A shortened wrench will allow this dimension to be reduced.
‡ F 1 refers to combinations of flanges: FF, FH, HH, FB, HB, BB.
Bore limits H7 unless specified otherwise.
Assembled Length (L*) Dynamic Maximum Nominal
Size Comprising Flange Types Mass Inertia Mr2 Stiffness Misalignment Torque
(kg) (kgm2 ) (Nm/ O ) (Nm)
FF, FH, HH FB,HB BB Parallel Axial
70 65 65 65 1,00 0,00085 – 0,3 +0,2 31
90 69,5 76 82,5 1,17 0,00115 – 0,3 +0,5 80
110 82 100,5 119 5,00 0,00400 65 0,3 +0,6 160
130 89 110 131 5,46 0,00780 130 0,4 +0,8 315
150 107 129,5 152 7,11 0,01810 175 0,4 +0,9 600
180 142 165,5 189 16,6 0,04340 229 0,4 +1,1 950
230 164,5 202 239,5 26,0 0,12068 587 0,5 +1,3 2000
280 207,5 246,5 285,5 50,0 0,44653 1025 0,5 +1,7 3150
All dimensions in millimetres unless otherwise stated.
All HRC Elements have an angular misalignment capacity of up to 1 o .
Mass is for an FF, FH or HH coupling with mid range Taper-Lock Bushes.
Standard element -40 o C / +100 o C.

Satisfactory performance depends on
correct installation and maintenance. All
instructions in this manual must therefore
be followed carefully.
1. Thoroughly clean all components, paying
particular attention to the removal of the
protective coating in the bore of the driven
flange.
2. Fit driven flange (with driving dogs facing
flywheel) onto driven shaft. (Where a Taper
Lock ® Flange is used, see separate fitting
instructions supplied with the Taper Lock ®
Bush). Locate flange on shaft so that
dimension ‘M’ will be achieved on assembly
(see paragraph 3).
3. Bring driven shaft into line with flywheel
until dimension ‘M’ is correct (see tables
overleaf). If shaft end float is to occur, locate
driven shaft at mid position of end float
when checking dimension ‘M’. Note that
driven shaft may project beyond the face
of the flange if required. In this event, shaft
diameter + key must be within the bore
diameter ‘E’ of the element (see table
overleaf). Allow sufficient space between
shaft end and flywheel for end float and
misalignment.
4. Fit driving flange to flywheel, using screws
from appropriate screw pack (to suit thread
type in flywheel). Initially screws should be
finger tight. Check location surface i.e.
outside diameter or spigot in back face of
flange are seating square with flywheel.
Alternatively flange location can be achieved
by using dowel pins. (2 at 180 o ).
5. Working alternately and evenly round the
flange, tighten each screw until the required
screw torques are achieved – as below.
Flywheel Size Screw Torque (Nm)
096 to 135
172
32
35
6. With open assembly type drives check both
parallel and angular alignment by placing
straight edge across the coupling using
setting diameter on flywheel flange and
shroud on driven flange (as shown below).
Re-check with straight edge after rotating
the flywheel through 180 o .
HRC Flywheel Couplings
FLYWHEEL COUPLING ASSEMBLY IMPORTANT
When assembled there must be clearance
between the metal halves of the coupling. A
minimum 1,5 mm between the face of the dog
and the inner face of the opposing coupling half
Driving flange
is recommended to prevent any preload of
driver and driven bearings.
Driven flange
Flexible
element
Parallel
mis-alignment
Straight edge
1,5 mm
Drive Couplings 205
DRIVE
COUPLINGS

DRIVE
COUPLINGS
HRC Flywheel Couplings
TABLE 4: DIMENSIONS – SAE STYLE COUPLING
BOLTS
Type Size pod
S
No. Size
mm inch
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
150-096
150-112
150-116
150-131
180-096
180-112
180-116
180-131
180-135
230-112
230-116
230-131
230-135
280-131
280-135
280-172
N
Example: Part No. = HRP 230
244
286
295
333
244
286
295
333
343
286
295
333
343
333
343
438
9 5 /8"
11 1 /4"
11 5 /8"
13 1 /8"
9 5 /8"
11 1 /4"
11 5 /8"
13 1 /8"
13 1 /2"
11 1 /4"
11 5 /8"
13 1 /8"
13 1 /2"
13 1 /8"
13 1 /2"
17 1 /4"
† J is the wrench clearance to allow for tightening and loosening the bush on the shaft. The use of a shortened key will allow this dimension to be
reduced.
LFH is the overall length when using F or H bushed flanges.
LB is the overall length when using ‘B’ flanges.
Mass and inertias are for a complete coupling, ie flywheel flange, F or H flange fitted with a mid range bush and the element.
206 Drive Couplings
6
8
8
8
6
8
8
8
6
8
8
8
6
8
6
8
L
M
Driven Flange Codes
‘B’ Flange - Bored to size
‘F’ Flange
‘H’ Flange
DRIVING FLANGE DRIVEN FLANGE
3 /8"UNC
7 /16"UNF
3 /8"UNC
3 /8"UNC
3 /8"UNC
7 /16"UNF
3 /8"UNC
3 /8"UNC
3 /8"UNC
7 /16"UNF
3 /8"UNC
3 /8"UNC
3 /8"UNC
3 /8"UNC
3 /8"UNC
1 /2"UNC
Element Codes
Nitrile Rubber (General Duty)
G
E
263
307
314
352
263
307
314
352
370
307
314
352
370
352
370
466
LFH LB M N
84,5
84,5
84,5
84,5
107,5
107,5
107,5
107,5
107,5
127
127
127
127
157
157
157
D
111
111
111
111
131
131
131
131
131
164,5
164,5
164,5
164,5
196
196
196
51
51
51
51
61
61
61
61
61
74,5
74,5
74,5
74,5
90,5
90,5
90,5
J
B A P S
15
15
15
15
15
15
15
15
15
15
15
15
15
17
17
17
Total
Mass
kg
Total
Inertia
kgm 2
9,629 0,055
11,622 0,098
11,955 0,106
13,607 0,157
13.128 0,078
15,191 0,121
15,523 0,129
17,788 0,191
18,859 0,226
22,301 0,187
22,634 0,195
24,774 0,255
25,845 0,289
41,889 0,484
43,103 0,524
47,737 0,782
Size
150
150
150
150
180
180
180
180
180
230
230
230
230
280
280
280
Type
FH
Bush
2012
2012
2012
2012
2517
2517
2517
2517
2517
3020
3020
3020
3020
3525
3525
3525
Flywheel to Shaft Coupling
Comprises:
1 - Flywheel Flange.
1 - Flexible element.
1 - HRC Driven Flange.
1 - Taper-Lock ® Bush.
Max Bore
Type B Bore
mm inch Max Min
50
50
50
50
60
60
60
60
60
75
75
75
75
90
90
90
2,0
2,0
2,0
2,0
2,5
2,5
2,5
2,5
2,5
3,0
3,0
3,0
3,0
3,5
3,5
3,5
30 O
70
70
70
70
80
80
80
80
80
100
100
100
100
115
115
115
42
42
42
42
48
48
48
48
48
55
55
55
55
65
65
65
+ 135 Flange
A B DFH D6 E G J†
150
150
150
150
180
180
180
180
180
225
225
225
225
275
275
275
30 O
90 O 90 O
BOLT HOLES ARE EQUI-SPACED
EXCEPT SIZE 135 SHOWN
115
115
115
115
125
125
125
125
125
155
155
155
155
206
206
206
33,5
33,5
33,5
33,5
46,5
46,5
46,5
46,5
46,5
52,5
52,5
52,5
52,5
66,5
66,5
66,5
30 O
60
60
60
60
70
70
70
70
70
90
90
90
90
105,5
105,5
105,5
156.56
156.50
62
62
62
62
77
77
77
77
77
99
99
99
99
119
119
119
2
40
40
40
40
49
49
49
49
49
59,5
59,5
59,5
59,5
74,5
74,5
74,5
42
42
42
42
48
48
48
48
48
55
55
55
55
67
67
67

Jaw Couplings offer the choice of sintered iron hubs, standard nitrile elements and a range of stock bores to meet the
demand for a low cost general purpose flexible coupling. They cater for incidental misalignment, absorb shock loads
and damp small amplitude vibrations.
SELECTION PROCEDURE
(a) Service Factor
Find service factor from table 1.
(b) Design Power
Multiply normal running power by the service factor.
(c) Coupling Size
Refer to table 2 and read across from the appropriate speed until a power equal to or
greater than the design power is found. The coupling size is given at the head of the
column.
(d) Bore Size
Check from dimension table 4 that the bore capacity of the coupling is adequate.
TABLE 1: SERVICE FACTORS
Driven Load
PRIME MOVER
ELECTRIC MOTOR
Uniform Load 1,0
Moderate Shock 1,5
Heavy Shock 2,0
TABLE 2: POWER RATINGS - NITRILE ELEMENTS (kW)
Speed
r/min*
100
720
960
1440
2880
3600
Torque N.m
050
0,037
0,26
0,35
0,53
1,05
1,32
3,51
Coupling Size
Jaw Couplings
070 075 090 095 100 110
0,06
0,43
0,58
0,87
1,73
2,17
5,77
TABLE 3: ELEMENT CHARACTERISTICS
Type
Nitrile
Temp
Range O C
TABLE 4: DIMENSIONS
Size
050
070
075
090
095
100
110
Max Displacement
0,12
0,90
1,20
1,80
3,61
4,51
11,9
Degrees Parallel
-40 to 100 1 0,38 80A 1
d1
27,5
35
44,5
53,5
53,5
65
84,5
Example: Part No. = L050
d2
Max
14
19
24
24
28
35
42
l1
44
51
54
54
64
90
108
l2 ø
6,5
9,5
8,0
8,7
11,0
11,0
19,0
0,20
1,44
1,93
2,89
5,78
7,22
19,2
Shore
Hardness
l3
16,5
20
21
23,5
25,5
35,5
43
0,27
1,95
2,59
3,89
7,78
9,73
25,8
Power
Factor
Set screw
ø over
key
M6
M6
M6
M6
M8
M8
M10
0,58
4,18
5,58
8,36
16,73
20,91
55,4
Approx +
mass
(kg)
Maximum speed 3 600 r/min. Maximum displacement all sizes: 0,38 mm radial, 1 o angular.
Ø Bored or bored and keywayed hubs can be supplied against special order. Bores are to ISO .268 H7 tolerance (BS 4500, 1969).
Keyways are to BS 4235 for metric bores and to BS46 Part 1:1958 for imperial bores.
+ Masses are for a complete coupling with solid hubs which are normally supplied.
*S -Sintered Iron.
0,11
0,26
0,46
0,55
0,68
1,58
3,17
1,10
7,94
10,59
15,88
31,77
39,71
105
Hub
Material
*S
Drive Couplings 207
S
S
S
S
S
S
S
DRIVE
COUPLINGS

DRIVE
COUPLINGS
High Precision Universal Joints with Hardened Bushes
Example: Part No. = UTS 100AL
Singles max 45 o - Doubles max 90 o
TABLE 1: DIMENSIONS
TYPE
108AD
TYPE
100AL
102A
103A
104A
105A
106A
108A
109A
110A
111A
111/1A
113A
114A
SELECTION OF JOINTS
TABLE 3 gives the maximum allowable torque (expressed in N.m) calculated on the basis
with an angle of inclination of 10 o and continuous use.
If the inclination angle is over 10 o the values shown will be reduced in accordance with the
angle factors in TABLE 2.
208 Drive Couplings
SINGLE JOINTS
d l1 l2
10
16
22
25
29
32
40
47
50
58
63
80
95
DOUBLE JOINTS
40
58
62
86
90
95
127
127
140
178
130
160
190
13
11
10
11
13
15
19
22
26
30
30
42
54
MAX BORE SIZES: ROUND, SQUARE, HEX
dH7
KEYWAY b t dH7 SH 8 SWH8
–
8
10
12
14
16
20
22
25
30
32
40
50
d1 l3
l4
l5
40 128 46 20 6 22,8 25 20 20 20
All dimensions are in mm's.
NB Joints are solid and may not be dismantled for boring.
–
2
3
4
5
5
6
6
8
8
10
12
14
–
9
11,4
13,8
16,3
18,3
22,8
24,8
28,3
33,8
35,3
43,3
53,8
dH7
KEYWAY b t dH7 SH 8 SWH8
5
10
12
12
16
20
25
25
32
35
40
50
55
–
–
10
12
14
16
20
22
25
30
30
–
–
TABLE 2: ANGLE FACTOR
ANGLE UP TO
5O 10O 20O 30O 40O All dimensions in millimetres.
FACTOR F
1,25
1
0,75
0,45
0,30
–
–
10
12
14
16
20
25
25
35
35
38
38

High Precision Universal Joints with Hardened Bushes
Example: Criteria for selection of joint after
taking into account the power to be
transmitted, speed and angle of inclination.
Example: power P 2,2 kW
speed n 200 r/min
bore size
angle � 20 o
1. The corresponding torque moment is:
M = 9550 x P = 9550 x 2,2 = 105,05 N.m
n 200
TABLE 3: TORSION MOMENTS FOR JOINTS IN N.m
SIZE
100AL
102A
103A
104A
105A
106A
108A
109A
110A
111A
113A
114A
100
5,5
13
25
43
68,5
86,5
240
300
384
432
504
720
200
5
9
17
25
43
84
168
192
240
264
336
480
300
4,2
8
14,5
20,5
39,5
72
120
144
168
192
264
336
SPEED r/min
For double joints use the value equivalent to 90% of the mentioned torsion moments.
NOTES ON THE INSTALLATION OF
UNIVERSAL JOINTS
RECOMMENDED LUBRICANTS
LUBRICATION
For both intermittent and continuously
rated joints where constant lubrication
(such as an oil bath) is not available, joint
covers suitable for grease packing are
recommended. These are available for all
sizes of single joint and can be used in pairs
on double joints.
Where the use of covers is not practical,
the working areas of the joint must be oiled
at least once a day.
2. The torque to be transmitted is 105,05
N.m but since the joint angle is 20 o one
must select a joint of larger dimensions
and torque carrying capacity to
compensate.
Since the torque factor for 20 o is 0,75
(as indicated on the table 2) one divides
the torque factor M by factor F.
M = 105,05 = 140,07 N.m
F 0,75
Darmex
Shell
Mobil
Caltex
400
3,8
7
13
17
36
57,5
96
120
144
156
216
264
GREASE
3. The appropriate joint should have a
torque capability of 140,07 N.m or
greater, refer to TABLE 3.
A Size 108A at 200 r/min will transmit
168 N.m.
4. Bore size, refer to TABLE 1 to ensure
joint will accept the shaft diameters.
500
3,5
6
12
15,5
33,5
51,5
84
96
120
132
–
–
123
Alvania EP2
Mobilplex 46
EP 00
700
–
5,2
11
13
28,5
41
60
72
96
–
–
–
OIL
GB 1050
Omala 320
SHC 632
Meropa 220
800
–
4,7
7,5
12
26,5
36
–
–
–
–
–
–
Where constant angular velocity throughout each revolution of the connected shafts is
required, the working angles must be equal - see Fig. 1. Where an intermediate shaft is
used either telescopic (to accommodate lateral movement between the driving and
driven shafts) or plain, the relationship of the joint ends must be as shown in Fig. 2.
Applications involving tension or compression of the universal joint should be referred
to Fenner Power Transmission Distributor.
FIG. 2
Drive Couplings 209
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Rubber Boots for the Protection of the Universal Joints
210 Drive Couplings
Example: Part No. = UJB 103G
SIZE
103G
104G
105G
106G
108G
109G
110G
111G
JOINT BORE
10
12
14
16
20
22
25
30
A
39
47
51
56
75
83
93
105
B C
20,5
24,5
27,5
30,5
40
45
50
56
47
52
58
67
84
97
110
124

Taper-Lock ® Rigid Couplings — Cast Iron
Taper-Lock ® Rigid Couplings provide a convenient method of rigidly connecting ends of shafts. Taper-Lock ® Bushes permit easier and
quicker fixing to the shafts with the firmness of a shrunk-on fit. These couplings have a male and female flange fully machined. The male
flange can have the bush fitted from the Hub side H or from the flange side F; the female flange always has bush fitting F. This gives two
possible coupling assemblies HF and FF. When connecting horizontal shafts, the most convenient assembly should be chosen. When
connecting vertical shafts use assembly FF only.
SELECTION PROCEDURE
Example:
A shaft coupling is required to transmit
75 kW at 1 440 r/min to a metal mill.
The motor shaft is 70 mm and the mill
shaft is 80 mm.
A) DESIGN TORQUE
N.m = 75 x 9 550 = 497 N.m
1 440
Example: Part No. = R12
TABLE 1: DIMENSIONS
Size
R 12
R 16
R 25
R 30
R 35
R 40
R 45
R 50
Bush
No.
1210
1615
2517
3030
3535
4040
4545
5050
Max.
Bore
Coupling Assembly HF Coupling Assembly FF
B) COUPLING SIZE
From TABLE 1 read across till a torque
greater than 497 N.m is found. The
coupling size at the column is an R25.
C) BORE SIZE
From TABLE 1 it shows that an R35
can accommodate both shafts.
Metric d1 d2 d3 d4 l1 l2 l3 l4 + l5 *
32
42
60
75
90
100
110
125
118
127
178
216
248
298
330
362
102
105
149
181
213
257
286
314
83
80
123
146
178
210
230
266
76
89
127
152
178
216
241
267
*/ 5 is the wrench clearance to allow for tightening and loosening the bush on the shaft. The use of a shortened wrench will permit this dimension to
be reduced.
+/ 4 is the distance between shaft ends.
‡ Mass is for couplings with mid-range bore Taper-Lock ® Bushes.
57
83
97
159
185
210
235
260
26
38
45
76
89
102
114
127
35
43
51
65
75
76
86
92
7
7
7
7
7
7
7
7
38
38
48
54
67
79
89
92
Mass
(kg) +
3,5
4,5
11,0
23,0
38,0
64,0
88,0
155,0
Max
Torque
N.m
222
475
1353
2552
4510
6775
9010
11301
Drive Couplings 211
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Disc-Type Flexible Coupling — Cast Iron Flanges
This Coupling has many outstanding advantages and is supplied in three alternative assemblies: HH, FF and HF as shown on page 168.
These enable the Taper-Lock ® Bush to be fitted from the hub side or the flange side, the choice depending on the application.
The flanges and Taper-Lock ® Bushes are of close-grained cast iron, machined to close tolerances and the flexible disc is of a non- metallic
rubber-impregnated fabric. The unit is designed and manufactured to the high standard already long associated with other Fenner products.
LONG LIFE
The power ratings are based on a life concept. They assume that misalignment is present and are such that long life of pins and disc, both
of which are replaceable, will be realised at all permitted speeds. Under conditions of perfect alignment the nominal torque capacity of the
coupling at 100 r/min is, of course, available at higher speeds.
THE ELIMINATION OF TIGHT PRESS FITTING
The separate operation of press-on or shrunk-on fitting is done automatically when, on tightening the grub-screws, the Bush is drawn into
the flange.
THE ELIMINATION OF RE-BORING
With Taper-Lock ® Bushes, reboring is not necessary. Bushes to suit all normal shaft sizes from 10 mm to 90 mm are obtainable ‘off the
shelf’.
EASY REMOVAL OR REPLACEMENT
To replace the central disc or to repair one of the coupled units, coupling dismantling and re-assembly is greatly simplified; there are no bolts
to disconnect, and the flange is removed simply by slackening the Taper-Lock ® Bush. The hole in the disc will permit the shafts to project
beyond the faces of the flange where this is necessary, and will permit the flanges and the disc to be slid along one of the connected shafts
where required.
FLEXIBILITY
The Coupling accommodates accidental parallel or angular shaft misalignment; it provides resilience against shock loads; it reduces or
eliminates the transmission of torsional vibration.
SELECTION – FROM DRIVEN MACHINE REQUIREMENT
Details required for coupling selection are:
(1) Type of driven machine and operating hours per day.
(2) Speed and power absorbed by driven machine (if absorbed power is not known calculate on power rating of primer mover).
(3) Diameter and length of shafts to be connected.
PROCEDURE
(a) Service Factor
Determine appropriate Service Factor
from table 1.
(b) Design Power
Multiply running power of driven
machine by the service factor. This
gives the design power which is used
as a basis for coupling selection.
(c) Coupling Size
Refer to table 2 and read across from
the appropriate speed until a power
equal to or greater than the design
power is found. The size of coupling is
given at the head of that column.
TABLE 1: SERVICE DUTY
NORMAL SERVICE / 1
Bakery dough mixers - compressors
(centrifugal; 3 or more cylinders) -
conveyors (apron, belt, chain, screw) -
elevators (bucket) - fans and blowers
(centrifugal, propeller) - generators and
exciters - laundry machinery - line shafts -
machine tools - printing machinery - pumps
(centrifugal: rotary: 3 or more cylinders) -
screens (conical, revolving) - textile reels -
warpers - wood working machinery.
212 Drive Couplings
(d) Bore Size
From dimension table 3 check that the
required bores can be accommodated.
EXAMPLE
A shaft coupling is required to transmit
70kW between a 1200 r/min d.c. electric
motor and a mixer running 8hrs/day. Motor
shaft is 70mm and the mixer shaft is
75mm.
(a) Service Factor
From table 1 the service factor is 1.
(b) Design Power
Design power 70 x 1 = 70kW.
SEVERE SERVICE / 1,5
Agitators - Compressors (1 or 2 cylinders) -
crushing machinery (stone or ore) - blowers
(induced draft, positive) - mills (ball, pug,
rod, tumbling barrel) - pumps (1 and 2
cylinder) - saw mill machinery - textile
spinning and doubling frames.
Class all pulsating or widely varying
loads as severe service.
(c) Coupling Size
Reading across from 1200 r/min in the
speed column of table 2 93,3kW is the
first power to exceed the required
70kW (design power). The size of the
coupling at the head of this column is
254.
(d) Bore Size
Table 3 shows that both shaft
diameters are within the bore range
available.

TABLE 2: POWER RATING (kW)
Speed
r/min
10
20
40
60
80
100
150
200
250
300
350
400
500
600
720
800
960
1000
1200
1400
1440
1600
1800
2000
2400
2880
3000
3600
TABLE 3: DIMENSIONS
Size
67
83
102
134
178
204
254
318
Bush
No.
1108
1210
1210
1610
2517
2517
3020
3535
67
0.02
0.05
0.10
0.16
0.21
0.26
0.37
0.48
0.57
0.61
0.72
0.79
0.90
0.99
1.07
1.13
1.22
1.24
1.36
1.46
1.48
1.57
1.68
1.80
2.03
2.29
2.36
2.73
Max.
Bore
Sizes
mm d1 d2
28
32
32
42
60
60
75
90
Disc-type coupling size
83 102 134 178 204 254 318
0.04
0.09
0.18
0.27
0.36
0.45
0.65
0.83
0.99
1.12
1.23
1.32
1.45
1.62
1.76
1.86
2.02
2.06
2.24
2.40
2.44
2.60
2.76
2.95
3.30
3.74
3.85
4.39
Mass
kg
1,2
1,8
2,5
4,5
10,2
13,6
34,9
66,2
0.07
0.14
0.28
0.43
0.57
0.72
1.04
1.34
1.58
1.79
1.97
2.11
2.36
2.58
2.81
2.97
3.23
3.30
3.59
3.83
3.88
4.07
4.30
4.51
4.99
5.54
5.68
6.37
67
83
102
134
178
204
254
318
0.16
0.32
0.64
0.96
1.28
1.60
2.33
2.97
3.53
4.01
4.39
4.71
5.27
5.77
6.29
6.64
7.24
7.39
7.98
8.58
8.68
9.10
9.62
10.2
11.3
12.7
13.1
14.8
–
–
67
83
124
124
152
178
0.35
0.70
1.41
2.11
2.82
3.52
5.11
6.53
7.76
8.80
9.62
10.4
11.6
12.7
13.8
14.6
16.0
16.3
17.6
18.8
19.0
20.0
21.2
22.4
24.9
27.9
28.6
–
0.80
1.60
3.20
4.81
6.42
8.06
11.6
14.8
17.7
20.1
21.9
23.6
26.4
28.9
31.5
33.2
36.2
36.9
40.1
42.8
43.3
45.5
48.1
50.7
56.2
60.6
–
–
d3
Nom. l1 l2 l3
51
64
76
102
143
162
197
248
58
66
66
70
108
115
139
228
Disc-Type Flexible Coupling
22
25
25
25
44
44
51
89
*/ 8 = Wrench clearance to allow for tightening and loosening the bush on the shaft. The use of a shortened wrench will permit this dimension to be
reduced.
+/ 4 = Shaft ends, although normally located dimension / 3 apart, can project beyond the flanges as shown. In this event, allow sufficient space between
shaft ends for end float and misalignment.
All couplings have an angular misalignment of 1 o .
1.86
3.76
7.43
11.1
14.8
18.6
26.9
34.5
40.9
46.5
50.7
54.6
61.2
66.9
72.8
76.8
84.0
85.8
93.3
99.2
100.0
105.0
111.0
–
–
–
–
–
14
16
16
20
20
27
37
50
5.37
10.6
20.7
30.2
39.2
47.7
68.9
88.0
105.0
119.0
132.0
145.0
162.0
175.0
189.0
198.0
211.0
214.0
240.0
261.0
264.0
274.0
–
–
–
–
–
–
TYPE HH
TYPE HF
TYPE FF
l4 l5 l6 l7
+
+
+
+
+
+
+
+
11
13
13
16
16
22
32
45
22
25
14
18
22
25
35
41
58
66
44
56
67
77
107
132
*
l8
29
38
38
38
48
48
54
67
Pins per Flange
No.
3
3
4
4
5
6
6
7
Diam
Nom
8
10
10
13
16
19
25
32
Drive Couplings 213
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Fenagrid ® Taper Grid Couplings
Structure & Designation
214 Drive Couplings
Part
1. Oil Seal
2. Cover
3. Hub
4. Grid
5. Gasket
6. Bolt
7. Lube Plug
H - Horizontal Split V - Vertical Split
Selection Method
Selection Processes
1) By using the following formula, obtain Design
Torque required.
Torque (Nm) = Power (kW) x 9550 x S.F
Speed (Rev/min)
2) Select the size with the same or with greater value
in the Basic Torque column. Refer to the maximum speed allowed
to the size selected and then compare the shaft diameters of the
application with the maximum bore diameter of the size selcted. If
the coupling bore size is not suitable, select the larger coupling
size.
3) Special requirements:
A. On calculating the torque required use the
lowest operating speed of the application.
B. If there are reverse motions repeatedly or
frequent irregular load changes, double the service factor.
Example
When you select a COUPLING to connect a 45 kW 1440
rpm motor to a rotary type pump, with shaft diameters of 60mm
for the motor and 52mm for the pump. Service factor from table
is 1,75 (from Page 218)
T = 45 x 9550 x 1.75
1440
T = 522.26 Nm
The coupling size 1060 accepts the calculated torque of
522.26 Nm and then compare the application shaft size (60mm)
to the maximum bore of the selected coupling size 1060
(55mm). You will select the coupling size 1070 accepting up to
65mm shaft diameter. The size also accepts the application
motor speed 1440 rpm. Either TH or TV covers are available.
Finally the coupling size 1070 is selected.

Drive Couplings 215
DRIVE
COUPLINGS
Type TH (Horizontal Split Aluminium Cover)
kW per
100
rpm
Size
Bore Dia.(mm)
Max
Speed
(rpm)
Basic
Torque
(Nm) Max. Min.
Bore Dia.(mm)
A B C D E
Gap (mm)
Min. Normal Max.
Coupling
Weight
(kg)
Lube
Weight
(kg)
Size
Coupling weight without bore machining
30
35
43
50
55
65
78
95
107
117
136
165
184
203
228
279
311
339
361
12
12
12
12
19
19
27
27
41
41
60
67
67
108
120.7
133.4
152.4
152.4
177.8
101.6
110.0
117.5
138.0
150.5
161.9
194.0
213.0
250.0
270.0
308.0
346.0
384.0
453.1
501.4
566.4
629.9
675.6
756.9
98.0
98.0
104.6
123.6
130.0
155.4
180.8
199.8
245.7
258.5
304.4
329.8
371.6
371.8
402.2
437.8
483.6
254.2
564.8
47.5
47.5
50.8
60.3
36.5
76.2
88.9
98.4
120.6
127.0
149.2
161.9
182.8
128.9
198.1
215.9
238.8
259.1
279.4
39.7
49.2
57.1
66.7
76.2
87.3
104.8
123.8
142.0
160.3
179.4
217.5
254.0
269.2
304.8
355.6
393.7
436.9
497.8
66.5
68.3
70.0
79.5
92.0
95.0
116.0
122.0
155.5
161.5
191.5
195.0
201.0
271.3
278.9
304.3
321.1
325.1
355.6
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
3
3
3
3
3
3
3
3
3
4.5
4.5
6
6
6
6
6
6
6
6
4.5
4.5
4.5
4.5
4.5
4.5
4.5
6
6
9.5
9.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5
1.9
2.6
3.4
5.4
7.3
10
18
25
42
54
81
121
178
234
317
448
619
776
1057
0.03
0.03
0.05
0.05
0.09
0.11
0.17
0.25
0.43
0.51
0.73
0.91
1.13
1.95
2.81
3.49
3.76
4.40
5.62
1020
1030
1040
1050
1060
1070
1080
1090
1100
1110
1120
1130
1140
1150
1160
1170
1180
1190
1200
1020
1030
1040
1050
1060
1070
1080
1090
1100
1110
1120
1130
1140
1150
1160
1170
1180
1190
1200
0.50
1.44
2.40
4.19
6.59
9.69
20.13
35.79
60.40
90.22
131.98
191.64
275.91
384.03
539.88
719.60
997.74
1319.88
1799.37
4500
4500
4500
4500
4350
4125
3600
3600
2400
2250
2025
1800
1650
1500
1350
1225
1100
1050
900
47.66
135.63
225.95
395.50
621.45
903.88
1864.24
3389.57
5705.80
8474.02
12428.56
18077.87
25986.94
36155.75
50844.05
67792.00
94004.98
124285.40
169480.10
Example: Part No. = T1020 HUB
Fenagrid ® Taper Grid Couplings

216 Drive Couplings
DRIVE
COUPLINGS
101.6
110.0
117.5
138.0
150.5
161.9
194.0
213.0
250.0
270.0
308.0
346.0
384.0
453.1
501.4
566.4
629.9
675.6
756.9
Type TV (Vertical Split Steel Cover)
Coupling weight without bore machining
30
35
43
50
55
65
78
95
107
117
136
165
184
203
228
279
311
339
361
12
12
12
12
19
19
27
27
41
41
60
67
67
108
120.7
133.4
152.4
152.4
177.8
98.0
98.0
104.6
123.6
130.0
155.4
180.8
199.8
245.7
258.5
304.4
329.8
371.6
371.8
402.2
437.8
483.6
254.2
564.8
47.5
47.5
50.8
60.3
63.5
76.2
88.9
98.4
120.6
127.0
149.2
161.9
182.8
182.9
198.1
215.9
238.8
259.1
279.4
39.7
49.2
57.1
66.7
76.2
87.3
104.8
123.8
142.0
160.3
179.4
217.5
254.0
269.2
304.8
355.6
393.7
436.9
497.8
24.2
25.0
25.7
31.2
32.2
33.7
44.2
47.7
60.0
64.2
73.4
75.1
78.2
106.9
114.3
119.4
130.0
135.0
145.0
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
6
6
12.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
6
6
12.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5
2.0
2.6
3.4
5.4
7.3
10.4
17.7
25.4
42.2
54.4
81.6
122.5
180.1
230.0
321.1
448.2
571.0
761.0
1021.0
0.03
0.03
0.05
0.05
0.09
0.11
0.17
0.25
0.43
0.51
0.73
0.91
1.13
1.95
2.81
3.49
3.76
4.40
5.62
1020
1030
1040
1050
1060
1070
1080
1090
1100
1110
1120
1130
1140
1150
1160
1170
1180
1190
1200
1020
1030
1040
1050
1060
1070
1080
1090
1100
1110
1120
1130
1140
1150
1160
1170
1180
1190
1200
0.50
1.44
2.40
4.19
6.59
9.69
20.13
35.79
60.40
90.22
131.98
191.64
275.91
384.03
539.88
719.60
997.74
1319.88
1799.37
4500
4500
4500
4500
4350
4125
3600
3600
2400
2250
2025
1800
1650
1500
1350
1225
1100
1050
900
47.66
135.63
225.95
395.50
621.45
903.88
1864.24
3389.57
5705.80
8474.02
12428.56
18077.87
25986.94
36155.75
50844.05
67792.00
94004.98
124285.40
169480.10
kW per
100
rpm
Size
Bore Dia.(mm)
Max
Speed
(rpm)
Basic
Torque
(Nm) Max. Min.
Bore Dia.(mm)
A B C D E
Gap (mm)
Min. Normal Max.
Coupling
Weight
(kg)
Lube
Weight
(kg)
Size
Example: Part No. = T1020 HUB
Fenagrid ® Taper Grid Couplings

Characteristics and Merits
1) PARALLEL
The movement of the grid in the lubricated grooves
accommodates parallel misalignment and steel permits full
funtioning of the grid - groove action in damping out shock and
vibration.
2) ANGULAR
Under angular misalignment, the grid-groove design permits a
rocking and sliding action of the lubricated grid and hubs
without any loss of power through the resilient grid.
3) AXIAL
End Float for both driving and driven members is permitted
because the grid slides freely in the lubricated grooves.
4) TORSIONAL FLEXIBILITY
Torsional flexibility is the advantage of Taper Grid Couplings.
Providing flexible accommodation to changing load conditions.
Fenagrid ® Taper Grid Couplings
LIGHT LOAD
The grid bears near the outer edges of the hub teeth. The long
span between the points of contact remains free to flex under
load.
NORMAL LOAD
As the load increases, the distance between the contact points
on the hub teeth is shortened, but a free span still remains to
cushion shock loads.
SHOCK LOAD
The coupling is flexible within its rated power capacity. Under
extreme overloads, the grid bears fully on the hub teeth and
transmits full load directly.
Taper Grid Couplings demonstrate the excellent performance as shown below
Vibration Absorption Shock Load Absorption
Drive Couplings 217
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Fenagrid ® Taper Grid Couplings
Applications Service Factors
Alphabetical Listing of Applications
Aerator 2.5
Agitatators
Vertical and Horizontal Screw,
Propellor, Paddle,etc. 1.5
Barge Haul Puller 3.0
Blowers
Centrifugal 1.5
Lobe or Vane 1.75
Car Dumpers 4.0
Car Pullers 2.5
Clarifier or Classifier 1.5
Compressors
Centrifugal 1.1
Rotary: Lobe or Vane 2.0
Rotary: Screw 2.0
Reciprocating:
Direct connected *
Without flywheels *
*With flywheel and gear between
Compressor and Prime mover
1 cylinder, single acting 5.0
1 cylinder, double acting 5.0
2 cylinders, single acting 5.0
2 cylinders, double acting 5.0
3 cylinders, single acting 5.0
3 cylinders, double acting 3.0
4 or more cyl., single acting 3.5
4 or more cyl., double acting 3.5
Conveyors
Apron, Assembly, Belt Chain,
Flight Screw 1.2
Bucket 2.0
Live Roll, Shaver and Reciprocating 3.5
Cranes and Hoists
Main Hoist 2.5
Skip Hoist 2.0
Slope 2.25
Bridge, Travel or Trolley 2.5
Dynamometer 1.5
Elevators
Bucket, Centrifugal Discharge 2.0
Freight or Passenger (Not approved)
Gravity Discharge 2.0
Escalators (Not approved)
Exciter Generator 1.75
Extruder, Plastic 2.25
Fans
Centrifugal 1.1
Cooling Tower 3.0
Forced Draft:
Across the line start 2.0
Driven thru' fluid or electric
slip clutch 1.5
Gas Recirculating 2.5
Induced draft with damper
control or blade cleaner 2.0
Induced draft without controls 3.0
Feeders
Disc, Screw 2.0
Reciprocating 3.5
Generators
Even Load 1.1
Hoist or Railway service 2.0
Welder Load 3.0
Hammer Mill 2.5
Laundry Washer or Tumbler 3.0
Line Shaft
Any Processing Machinery 2.0
Machine Tools
Auxiliary and Transverse Drive 1.5
Bending Roll, Notching Press,
Punch Press, Planer, Plate Reversing2.5
Main Drive 2.0
Man Lifts (Not approved)
Metal Forming Machines
Draw Bench, Carriage & Main Drive 3.0
Extruder 3.0
Forming Machine & Forming Mills 3.0
Slitters 1.5
Wire Drawing or Flattening 2.5
218 Drive Couplings
Service Factors Service Factors Service Factors Service Factors
Wire Winder 2.25
Coilers and Uncoilers 2.25
Mixers (see Agitators)
Concrete 2.5
Muller 2.5
Press, Printing 2.25
Pug Mill 2.5
Pulverizers
Hammermill and Hog 2.5
Roller 2.0
Pumps
Centrifugal
Constant Speed 1.1
Frequent Speed Changes
under Load 2.0
Descaling with accumulators 2.0
Gear, Rotary or Vane 1.75
Reciprocating
1 cylinder, single or double acting 3.0
2 cylinders, single acting 3.0
2 cylinders, double acting 2.5
3 or more cylinders 2.0
Screens
Air Washing 1.5
Grizzly 2.0
Rotary, Coal or Sand 2.0
Vibration 3.5
Water 1.0
Ski Tows (Not approved)
Steering Gear 1.5
Stoker 1.5
Tumbling Barrel 2.5
Winch, Manouevering
Dredge, Marine 2.5
Windlass 2.0
Wood Working Machinery 1.5
Work Lift Platforms (Not approved)
Alphabetical Listing of Industries
Service Factors
Aggregate Processing, Cement,
Mining Kilns, Tube, Rod and Ball Mills
Direct or on LS Shaft of reducer with Final drive
Machine Gears 3.0
Single Helical or Herringbone Gears 2.25
Conveyors, Feeders, Screens,
Elevators; See General Listing
Crushers, Ore or Stone 3.5
Dryer, Rotary 2.0
Grizzly 3.0
Hammermill or Hog 2.5
Tumbling Mill or Barrel 2.5
Brewing and Distilling
Bottle and Can Filling Machines 1.5
Brew Kettle 1.5
Cookers, Continuous Duty 1.75
LauterTub 2.25
Mash Tub 1.75
Scale Hopper, Frequent Peaks 2.25
Clay Working Industry
Brick Press, Briquette Machine,
Clay Working Machine, Pug Mill 2.25
Dredges
Cable Reel 2.25
Conveyors 1.5
Cutter Head, Jig Drive 3.0
Manouevering Winch 2.5
Pumps (Uniform Load) 2.0
Screen Drive, Stacker 2.5
Utility Winch 2.5
Food Industry
Beet Slicer 2.5
Bottling, Can Filling Machine,
Cereal Cooker 1.75
Dough Mixer, Meat Grinder 2.5
Lumber
Band Resaw 2.0
Circular Resaw, Cut-off 2.5
Edger, Head Rig, Hog 3.0
Gang Saw (Reciprocating) 3.0
Log Haul 3.0
Planer 2.5
Rolls, Non-reversing 2.0
Rolls, Reversing 3.0
Sawdust Conveyor 1.75
Slab Conveyor 2.5
Sorting Table 2.0
Trimmer 2.25
Metal Rolling Mills
Coilers (Up or Down) Cold Mills only 2.25
Coilers (Up or Down) Hot Mills only 2.5
Coke Plants
Pusher Ram Drive 3.5
Door Opener 3.0
Pusher or Carry Car Traction Drive 4.0
Cold Mills
Strip Mills
Twinning Mills
Cooling Beds 2.0
Drawbench 3.0
Feed Rolls - Blooming Mills,
Furnace Pushers 4.0
Hot and Cold Saw Mills 3.0
Hot Mills
Strip or Sheet Mills
Reversing, Blooming or Slabbing Mills
Edge Drives
Ingot Cars
Manipulators 4.0
Merchant Mills
Mill Tables
Roughing Breakdown Mills 4.0
Hot Bed or Transfer,
Non-reversing 2.25
Run Out, Reversing 4.0
Run Out, Non-reversing,
Non-plugging 4.0
Reel Drives 2.25
Rod Mills
Screwdown 3.0
Seamless Tube Mills
Plercer 4.0
Thrust Block 3.0
Tube Conveyor Rolls 3.0
Repler 3.0
Kick Out 3.0
Sideguards 4.0
Skelp Mills
Slitters, Steel Mill only 2.25
Soaking Pit Cover Drives –
Lift 1.75
Travel 2.25
Straighteners 3.0
Unscramblers (Billet Bundle Busters) 3.0
Wire Drawing Machinery 2.25
Oil Industry
Chiller 2.75
Oilwell Pumping (not over 15%
peak torque 3.0
Paraffin Filter Pross 2.0
Rotary Kiln 3.0
Paper Mills
Barker Auxillary, Hydraulic 3.0
Barker, Mechanical 3.0
Barking Drum
L.S. shaft of reducer with final drive
– Helical or Herringbone gear 3.0
Machined Spur Gear 3.0
Cast Tooth Spur Gear 4.0
Beater & Pulper 2.5
Bleachers Coaters 1.75
Calender & Super Calender 2.5
Chipper 4.0
Converting Machine 1.75
Couch 2.25
Cutter, Felt Whipper 3.0
Cylinder, Dryer 2.25
Felt Stretcher 2.0
Fourdrinier 2.28
Jordon 3.0
Log Haul 3.0
Line Shaft 2.0
Press 2.25
Pulp Grinder 2.25
Reel, Rewindar, Winder 2.0
Stock Chest, Washer,
Thickener 2.0
Stock Pumps, Centrifugal
Constant Speed 1.5
Frequent Speed Changes
Under Load 1.75
Suction Roll 2.5
Rubber Industry
Calender 2.0
Crooker, Rlexicator 3.5
Extruder 2.25
Intensive or Banbury Mixer 3.5
Mixing Mil ?????
One or two in line 3.5
Three or four in line 3.0
Five or more in line 2.25
Tire Building Machine 3.5
Tire & Tube Press Opener
(peak Torque) 1.5
Tuber, Strainer, Pelletizer 2.25
Warming Mill
One of two Mills in line 3.0
Three or more Mills in line 2.25
Washer 3.5
Sewage Disposal Equipment
Bar Screen, Chemical Feeders,
Collectors, Dewatering
Screen, Grit Collector 1.5
Sugar Industry
Cane Carrier & Levater 2.5
Cane Knife & Crusher 3.0
Mill Stands, Turbine Driven
with all helical or ????? gears 2.0
Electric Drive or Steam Engine
Drive with Helical, Herringbone,
or Spur Grears with any Prime
Mover 2.25
Textile Industry
Batcher 1.75
Calender, Card Machine 2.0
Cloth Finishing Machine 2.25
Dry Can, Loom 2.0
Dyeing Machinery 1.75
Knitting Machine 2.2
Mangle, Napper, Soaper 1.75
Spinner, Tenter Frame, Winder 2.0
Reducer 2.0

Installation Instructions
For TH Type Couplings
Clean all metal parts using nonflammable
solvent. Lightly coat seals with grease
and place on shaft, before mounting hub.
Mount hubs on the shafts.
Size
1020
1030
1040
1050
1060
1070
1080
1090
1100
1110
1120
1130
1140
1150
1160
1170
1180
1190
1200
After greasing the teeth of the groove
hub, fix the GRID in the same direction.
Recommended installation
Parallel
offset p
0.15
0.15
0.15
0.20
0.20
0.20
0.20
0.20
0.25
0.25
0.28
0.28
0.28
0.30
0.30
0.30
0.38
0.38
0.38
Angular
X - Y
0.06
0.07
0.08
0.10
0.11
0.12
0.15
0.17
0.20
0.22
0.25
0.30
0.33
0.39
0.44
0.50
0.56
0.61
0.68
Parallel
offset p
0.30
0.30
0.30
0.40
0.40
0.40
0.40
0.40
0.50
0.50
0.56
0.56
0.56
0.60
0.60
0.60
0.76
0.76
0.76
Fenagrid ® Taper Grid Couplings
The performance and the life of the coupling depend on how you install and service
them. This page helps you how to assemble the coupling for the best performance
and for the trouble free operation.
TH Taper Grid Coupling is designed to be operated in either the horizontal or vertical
position without modification.
*Simple standard mechanical tools such as wrenches, a straight edge and feeler
gauge or dial guage are required to install the Taper Grid Coupling.
Using spacer bar, equal in thickness to
the normal gap. The difference in
maximum measurements must not
exceed the angular limit.
Coupling disassembly and grid
removal.
When ever it is necessary to
disconnect the coupling, remove the
cover halves and grid.
A round rod or screw driver can be a
convenient tool to remove the grid.
Operating
Angular
X - Y
0.24
0.29
0.32
0.39
0.45
0.50
0.61
0.70
0.82
0.90
1.01
1.19
1.34
1.56
1.77
2.00
2.26
2.44
2.72
Normal
gap
±10%
3
3
3
3
3
3
3
3
4.5
4.5
6
6
6
6
6
6
6
6
6
Align so that a straight edge rests squarely
on both hubs as shown. And also at 90º
interval. The clearance must not exceed
the limit specified in the Table below.
Thoroughly grease the grid. Place oil seals on the hubs, put
gaskets and fasten the cover halves correctly with bolts.
Drive Couplings 219
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Fenagrid ® Taper Grid Couplings
For TV Type Couplings
Clean all metal parts using nonflammable
solvent. Lightly coat seals with grease
and place the covers on shaft before
mounting hub. Mount hubs on the shafts.
After greasing the tooth groove hub, fix
the GRID in the same direction.
220 Drive Couplings
Use a spacer bar equal in thickness to
the normal gap. The difference in
maximum measurements must not
exceed the angular limit.
Lubrication and Handling
Align so that a straight edge rests squarely on
both hubs as shown. Check at 90 O intervals.
Clearances measured with dial guage must
not exceed limit specified in Table.
Pack the spaces between and around the grid with as much lubricant as
possible. Slide cover halves with seals onto hubs and position with lube holes
180 O apart.
You should choose a high quality lubricant for a good performance and long life.
1) Grease Lubrication
Grease the grid before assembling covers. Fill up grease through the lube plugs after assembing couplings.
2) Supplement and replacement
Every three months or every 240 - 250 hours of operation, you should add grease. Every 3 months or every 4000
hours of operation you should replace all the deteriorated grease.
3) Selection
You can choose grease according to the ambient temperature shown in the table below.
Common Industrial Lubricants (NLGI Grade #2)
Manufacturer
Amoco Oil Co.
Atlantic Richfield Co.
Chevron U.S.A. Inc.
Cities Service Co.
Conoco Inc.
Exxon Company, U.S.A.
Gulf Oil Corp.
E.F. Houghton & Co.
Impenrial Oil Ltd.
Keystone Div. (Pennwallt)
Mobil Oil Corp.
Phillips Petroleum Co.
Shell Oil Co.
Standard Oil Co. (OH)
Sun Oil Company
Texaco Lubricants
Union Oil Co. (CA)
Valvoline Oil Co.
0˚F to 150˚F
(–18˚C to 66˚C)
Amolith Grease #2
Litholene HEP 2
Chevron Dura–Lith EP–2
Citgo HEP –2
EP Conolith #2
Ronex MP
Gulfcrown Grease #2
Cosmolube #2
Esso MP Grease H
#81 Light
Mobilux EP111
IB & RB Grease
Alvania Grease #2
Factran #2
Prestige 42
Starplex HD2
Union Unoba #2
Val–Lith EP #2
Ambient Temperature Range:
–30˚F to 100˚F
(–43˚C to 38˚C)
Amolith Grease #2
Litholene HEP 2
Chevron Dura–Lith EP–2
Citgo HEP 2
EP Conolith #2
Ronex MP
Gulfcrown Grease #2
Cosmolube #1
Lotemp EP
#84 Light
Mobilux #1
Philube IB & RB Grease
Alvania Grease #2
Factran #2
Prestige 42
Multifak EP2
Union Unoba #2
Val–Lith EP #2
Note: Check with lube manufacturer for approved lubricants to use in the food processing industry.

ADVANTAGE
WHY ESCOGEAR?
High torque and misalignment capacity
Thanks to the patented Escogear Multicrown profile (used on the C and F series), the
optimised coupling design and the standard use of 12,9 quality bolts, the Escogear couplings
offer the user a very high torque capacity.
This means that for a given torque a smaller coupling can be used which results in more
efficient machine design and performance. Furthermore, this high torque is available at
important angular misalignment.
Transparent coupling selection
The torque capacity of a gear type coupling strongly depends on the angular misalignment
to which it is subjected: the higher the misalignment, the lower the torque capacity. It is
clear that this relationship can and will cause problems in coupling selection because
misalignment during operation is almost impossible to predict. Escogear couplings of the F
and C...M type are equipped with Esco Multicrown tooth form. Thanks to this quite unique
design, the Escogear has a torque capacity that is practically independent of the angular
misalignment. Therefore, coupling selection is easy and mistakes are avoided: long coupling
life is guaranteed.
High precision gearing
Pitch error in the gearing of coupling can strongly affect, the load distribution between the
teeth can be strongly influenced. In come cases, the maximum load applied on the teeth
can be twice the value of the load calculated. The consequence will be higher surface and
root stresses and coupling failure might be the result. Thanks to the high precision
manufactured, and the sophisticated quality control, pitch error is minimized and the best
possible gear quality level and life time can be guaranteed.
Reduced backlash
One of the consequences of the Multicrown design is that the necessary backlash between
the teeth can be reduced to an absolute minimum. This will reduce the impact loads in start/
stop and reversing torque applications. As a result, the teeth can be designed with a larger
section and the root stresses will be reduced. Thanks to this feature the Escogear couplings
are ideal for use in presses, mills, punching machines, portal cranes etc.
Perfect gear top centring
Gear type couplings require, in order to operate, a “clearance” between the top of each hub
tooth and the root of the sleeve teeth. Due to this clearance, the sleeve cannot be perfectly
centred on the hubs. This will create vibrations in applications where the load constantly
changes from no load to full load (e.g. portal cranes). These vibrations will of course influence
the operation of the connected equipment. Thanks to special design and machining
techniques, Esco is able to pilot the top of each hub tooth into the root of the sleeve teeth.
By doing so, the sleeve will remain perfectly centred on the hub and vibrations will be
avoided. This specific feature is standard on all F and C...M couplings.
Excellent protection of components
In order to guarantee optimum operation, all Escogear couplings are protected with special
surface treatment or coating. All bolts are coated with Dacromet and the nuts are zinc
plated which gives an excellent corrosion resistance and makes disassembly possible, even
after numerous years of service life. Furthermore, all the steel components are protected
with a special coating to improve their corrosion resistance.
Escogear
Drive Couplings 221
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
FLEXIBLE GEAR COUPLINGS
SERIES F
With ESCO MULTICROWN tooth form for long life
Maximum torque: up to 5 040 000 Nm
Bore: up to 1 130 mm
Lower stresses
The Esco Multicrown tooth form is a curve
with constantly changing radii of curvature.
The tooth contact area under misaligned
conditions has a much larger radius of
curvature than conventional crowning. The
contact area therefore is larger thus reducing
the surface stresses.
Constant velocity power
transmission
Esco generates the Esco Multicrown, tooth
in such a way that the necessary
characteristics for homocinetic conjugate
tooth action are perfectly achieved.
Less backlash
The Esco Multicrown tooth design requires
less backlash for a given angle of
misalignment than the conventional
crowning, thus reducing shocks in reversing
application.
222 Drive Couplings

SERIES F
AVAILABILITIES
Dimensions in mm without engagement.
Escogear Couplings
Drive Couplings 223
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
SERIES F
OTHER TYPES AVAILABLE (on request)
Only a few special types of couplings are illustrated.
Additional special types are available on request.
SHAFT CONNECTIONS
224 Drive Couplings

SERIES N - C - F
HOW TO SELECT THE RIGHT COUPLING SIZE
T/Tn Ref. (%)
100
90
80
70
60
50
40
30
20
10
Max. 0,75 o area
Max. 0,5 o area
FST 45 TO 275 FST
Size
Forbidden Area
Special Design Requested
Max. 0,4 o area
Max. 0,3 o area
Escogear Couplings
A. Select the size of Escogear coupling that will accommodate the largest shaft diameter.
B. Make sure this coupling has the required torque capacity according to following formula:
9550 x P x Fu
torque in Nm =
n
P = power in kW — n = speed in rpm — Fu = service factor according to tabulation 1.
The coupling selected (A) must have an equal or greater torque capacity than the result of the formula (B). Otherwise select a larger size
coupling.
Check if peak torque does not exceed tabulated peak torque Tp indicated in the selection chart.
Check also max. allowable misalignment using the graph of tabulation 2.
C. Check if shaft/hub connection will transmit the torque. If necessary, select a longer hub.
TABULATION 1
Driven Machine
Uniform
Moderate
Shocks
Heavy
Shocks
TABULATION 2
HOW TO USE THE GRAPH?
Applications
Generators - Blowers: centrifugal vane, fans - Centrifugal pumps and
compressors - Machine tools: auxiliary drives - Conveyors: belt and chain,
uniformly loaded, escalators - Can filling machines and bottling machinery -
Agitators: pure liquids.
Propeller - Waterjet pumps
Blower: lobe - Pumps: gear and lobe types - Vane compressors - Machine tools:
main drives - Conveyors: belt and chain not uniformly fed bucket and screw -
Elevators, cranes, tackles and winches - Wire winding machines, reels, winders
(paper industry) - Agitators liquids and solids, liquids variable density.
Generators (welding) - Reciprocating pumps and compressors - Laundry
washers - Bending roll, punch press, tapping machines - Barkers, calanders,
paper presses - Briquetter machines, cement furnace - Crushers: ore and stone,
hammer mill, rubber mill - Metal mills: forming machines, table conveyors -
Draw Bench, wire drawing and flattening machines - Road and railroad
equipment.
Electric
Motors
Turbines
Max. 0,2 o area
T n Ref.
kNm
n Ref.
min-1
0
0 10 20 30 40 50 60 70 80 90 100 n/n Ref. (%)
Maximum torque, maximum speed and maximum misalignment may not occur simultaneously.
Graph must be used as follow:
1. Calculate Tn and Tp and select coupling size as usual. Tn = nominal torque – Tp = peak torque.
2. Calculate Tn/Tnref and N/Nref and plot the resulting point in the graph.
3. If the resulting point is located in the white area, a standard coupling may be used as far as maximum misalignment doesn’t exceed the
maximum misalignment indicated in the graph.
4. If the resulting point is located in the shaded area, refer to Fenner Power Transmission Distributor.
1,25
1,25 to 1,5
1,5 to 2
45
60
75
95
110
130
155
175
195
215
240
275
Driver Machine
Hydraulic
motors
Gears
drivers
Service Factor Fu
1,3
2,8
5
10
16
22
32
45
62
84
115
174
13450
10400
8650
7100
6050
5150
4300
3950
3600
3450
3300
3050
Recriprocating
engine
Electric motors
frequent starts
0,8 to 1,25 1 to 1,5 1,25 to 1,75
1,5
1,5 to 1,75
1,75 to 2,25
1,75
1,75 to 2
2 to 2,5
Drive Couplings 225
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
d Ø nominal max.
d Ø min.
d Ø max.
�
�
Grease
226 Drive Couplings
LEGENDS OF USED PICTOGRAMS
min.max.
�
�
J
(WR 2 )
Tn
Tp
MAXIMUM NOMINAL BORE (mm)
MINIMUM BORE (mm)
MAXIMUM BORE (mm)
MAXIMUM TORQUE (Nm)
MAXIMUM SPEED (rpm)
MAXIMUM OFFSET
(mm)
MAXIMUM ANGULAR
MISALIGNMENT (degree)
INERTIA (kgm 2 )
WEIGHT (kg)
GREASE QUANTITY (dm 3 )
Notes for series N – C – F
1. For key according to ISO R 773.
2. Gear maximum continuous transmissible torque for the tabulated
misalignment. The effective transmissible torque depends on the
bore and shaft/hub connection.
3. Higher speed on special request.
3.1. For grease withstanding centrifugal acceleration of 1,000g.
See installation and maintenance manual IM.
3.2. For grease withstanding centrifugal acceleration of 2,000g.
See installation and maintenance manual IM.
3.3. Depends on S.
3.4. For long operation in disconnected position contact us.
4. For solid bore.
4.1. Depends on S.
4.2. For solid bore and S minimum.
4.3. Per 100 mm spacer length.
4.4. Depends on L and R.
5. For pilot bored hubs and S minimum.
5.1. Depends on S.
5.2. For pilot bored hubs and S minimum.
5.3. Per 100 mm spacer length.
5.4. Depends on L and R.
6. See installation and maintenance manual IM.
6.1. Depends on S. Values given for S maximum.
7. On request. For larger S contact us.
8. Values for S minimum. S maximum depends on torque and speed.
9. G must remain constant during operation.
10. Needed to control the alignment and inspect the gears.

EQUIVALENCE CHART BASED ON TORQUE RATINGS
Torque
Capacity
(Nm)
175000
150000
125000
100000
80000
60000
40000
30000
20000
15000
10000
7500
5000
3500
2500
2000
1500
1250
1000
750
500
Escogear
FST
(2 x 0,75 o )
FST 275
FST 240
FST 215
FST 195
FST 175
FST 155
FST 130
FST 110
FST 95
FST 75
FST 60
FST 45
Flender
Zapex
(2 x 0,5 o )
ZIN 7
ZIN 6
ZIN 5,5
ZIN 5
ZIN 4,5
ZIN 4
ZIN 3,5
ZIN 3
ZIN 2,5
ZIN 2
ZIN 1,5
ZIN 1
Maina
GO-A
(2 x 0,5 o )
GO-A 11
GO-A 10
Escogear Couplings
GO-A 9
GO-A 8
GO-A 7
GO-A 6
GO-A 5
GO-A 4
GO-A 3
GO-A 2
GO-A 1
GO-A 0
Jaure
MT Series
(2 x 0,5 o )
MT 260
MT 230
MT 205
MT 185
MT 165
MT 145
MT 125
MT 100
MT 90
MT 70
MT 55
MT 42
Falk
Lifelign
(2 x 0,5 o )
1070G
1060G
1055G
1050G
1045G
1040G
1035G
1030G
1025G
1020G
1015G
1010G
Kopflex
Series H
REMARK
When selecting based upon the above equivalent chart, please check bore capacity of Escogear coupling against the application requirements.
Dimensions in mm without engagement.
7H
6H
5,5H
5H
4,5H
4H
3,5H
3H
2,5H
2H
1,5H
1H
Drive Couplings 227
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
AGMA STANDARD - INTERCHANGEABILITY CHART
ESCO
FST
45
60
75
95
110
130
155
175
195
215
240
275
A105
d ø nominal max. mm
45
45
d ø min. mm 0
*d ø max. mm 50
A0 mm 89
A1 mm 98
A2 mm 107
E mm 43
G0 mm 3
G1 mm 12
G2 mm 21
M mm 55
Type
228 Drive Couplings
LOVEJOY
F
(1)
44
1
11 / 2
2
21 / 2
3
31 / 2
4
41 / 2
5
51 / 2
6
7
60
60
0
65
103
109
115
50
3
9
15
59
(1 1/2)
60
75
75
0
78
127
141
155
62
3
17
31
79
(2)
75
95
95
0
98
157
169
181
76
5
17
29
93
P.C.D.
(2 1/2)
95
FALK
G20, G10
1010
1015
1020
1025
1030
1035
1040
1045
1050
1055
1060
1070
110
110
0
112
185
199
213
90
5
19
33
109
(3)
110
130
130
55
132
216
233
250
105
6
23
40
128
(3 1/2)
130
155
155
65
158
246
264
282
120
6
24
42
144
(4)
155
KOP-FLEX
H
(4 1/2)
175
1
11 / 2
2
21 / 2
3
31 / 2
4
41 / 2
5
51 / 2
6
7
Type FST
175
175
80
175
278
299
320
135
8
29
50
164
195
195
90
198
308
332
356
150
8
32
56
182
(5)
195
215
215
100
212
358
389
420
175
8
39
70
214
(5 1/2)
215
240
240
120
244
388
426
464
190
8
46
84
236
(6)
240
AMERIDRIVES
F
B mm 111 141 171 210 234 274 312 337 380 405 444 506
O mm 78 100 120 144 170 198 234 256 290 315 345 400
Q mm 3.5 3.5 3.5 3.5 3.5 3.5 3.5 4 4 4 6 8
T mm 14 19 19 22 22 28.5 28.5 28.5 38 38 26 28.5
U Qty. 6 8 6 6 8 8 8 10 10 14 14 16
V mm 9 11 13 17 17 21 21 21 21 21 25 25
W mm 96 122 150 184 208 242 280 305 345 368 406 460
U Qty. 6 8 6 6 8 8 8 10 8 14 14 16
V inch 0.250 0.375 0.500 0.625 0.625 0.750 0.750 0.750 0.875 0.875 0.875 1.000
W (P.C.D.) inch 3.750 4.812 5.875 7.125 8.125 9.5 11 12 13.5 14.5 15.75 18.25
101
1011 / 2
102
1021 / 2
103
1031 / 2
104
1041 / 2
105
1051 / 2
106
107
275
275
150
290
450
483
516
220
10
43
76
263
(7)
275
(8)*
280
591
451
8
33
14
32
530
16
1.125
20.75
*
320
640
483
8
38
18
32
580
*
360N
684
540
8
38
24
32
624
AJAX
6901
1
1,5
2
2,5
3
3,5
4
4,5
5
5,5
6
7
*
280
*
320
* * *
360N 400N 450N
280 320 360 400 450
180 200 220 260 280
310 340 390 435 485
570 597 623 673 713
590 617 658 713 761
610 637 693 753 809
280 292 305 330 350
10 13 13 13 13
30 33 48 53 61
50 53 83 93 109
310 325 3553 383 411
*
400N
742
590
10
38
28
32
682
(1)
450N
804
660
10
38
30
32
744

FST 45 275
�
d Ø nominal max.
Grease
mm: ±
min.max.
d Ø min.
d Ø max.
�
J
(WR 2 )
Tn
Tp
A
B
C
D
E
F
G
H
M
P
Q
A150
mm
mm
mm
Consult Fenner Power Transmission Distributor.
Dimensions in mm without engagement.
1
2
3.1
3.2
–
Nm
tr/min
omw/min
rpm
min -1
degré
graad
degree
grad
– mm: ±
4 kgm 2
5 kg
6 dm 3
10
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Escogear Couplings
Type FST
max. 1,5 o
45 60 75 95 110 130 155 175 195 215 240 275
45
0
50
1300
2600
5000
7000
0,35
0,005
4,1
0,05
89
111
80
67
43
41
3
147
60
0
64
2800
5600
4400
6200
0,4
0,015
8,0
0,07
103
141
103,5
87
50
47
3
166
75
0
78
5000
10000
4000
5650
0,5
0,040
14,6
0,13
127
171
129,5
106
62
58,5
3
212
95
0
98
10000
20000
3600
5100
0,6
0,105
26,1
0,21
157
210
156
130
76
68,5
5
249
110
0
112
16000
32000
3350
4700
2X0,75 2X0,75 2X0,75 2X0,75 2X0,75
0,7
0,191
38,8
0,36
185
234
181
151
90
82
5
295
130
55
132
22000
44000
3100
4350
2X0,75
0,9
0,430
59,2
0,52
216
274
209
178
105
98
6
350
155
65
158
32000
64000
2800
4000
2X0,75
1
0,842
89,4
0,80
246
312
247
213
120
108
6
392
175
80
175
45000
90000
2700
3800
2X0,75
1,1
1,320
117,5
0,98
278
337
273
235
135
121
8
440
M 12
205
18
195
90
198
62000
124000
2550
3600
2X0,75
1,2
2,448
167,1
1,51
308
380
307
263
150
132
8
484
M 16
226
24
215
100
217
84000
168000
2450
3450
2X0,75
1,4
3,716
222,4
2,02
358
405
338
286
175
151,5
8
562
M 16
250
24
240
120
244
115000
230000
2300
3300
2X0,75
1,5
5,384
275,0
2,43
388
444
368
316
190
165
8
616
M 16
276
24
275
150
275
174000
348000
2150
3050
2X0,75
1,7
10,872
413,6
3,29
450
506
426
372
220
183,5
10
688
M 20
330
30
Drive Couplings 229
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
FST 280 1130
d Ø nominal max.
�
Grease
mm: ±
d Ø min.
d Ø max.
Tn
Tp
min.max.
�
J
(WR 2 )
A
B
C
D
E
F
G
H
M
P
Q
A150
mm
mm
mm
Consult Fenner Power Transmission Distributor.
Dimensions in mm without engagement.
230 Drive Couplings
1
2
3
–
Nm
tr/min
omw/min
rpm
min -1
degré
graad
degree
grad
– mm: ±
4 kgm 2
5 kg
6 dm 3
10
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Type FST
max. 1,5 o
280 320 360N 400N 450N 500 530 560 600 660 730 830 900 1000 1060 1130
280
180
310
244000
488000
1900
2X0,75
2
20,1
591
6,44
570
591
472
394
280
225
10
632
M 20
336
30
320
200
340
290000
580000
1800
2X0,75
2,1
31
760
7,6
597
640
518
432
292
234
13
660
M 20
377
30
360
220
375
370000
740000
1500
2X0,75
2,3
45
932
11
623
684
562
480
305
251
13
705
M 24
420
40
400
260
420
450000
900000
1400
2X0,75
2,5
68
1180
12
673
742
620
530
330
269
13
745
M 24
480
40
450
280
470
560000
112000
1300
2X0,75
2,7
105
1532
16
713
804
682
594
350
283
13
770
M 24
544
40
500
300
500
630000
1260000
1150
2X0,75
2,8
164
1950
18
759
908
733
629
370
301
19
825
M 42
568
76
530
330
530
750000
1500000
1050
2X0,75
3
228
2330
23
809
965
787
673
395
318
19
870
M 42
600
76
560
350
560
1720000
900
2X0,75
3,2
313
2840
25
859
1029
841
724
420
333
19
900
M 42
642
76
600
380
600
2040000
800
2X0,75
3,4
430
3370
29
905
1092
892
772
440
361
25
990
M 48
680
82
660
420
660
2580000
550
2X0,75
3,6
685
4370
39
945
1200
997
870
460
375
25
1020
M 48
765
82
730
480
730
4040000
450
2X0,75
3,7
1161
6110
57
1105
1330
1130
965
540
408
25
1130
M 48
860
82
830
540
830
4900000
380
2X0,75
4
1756
7810
77
1205
1440
1240
1062
590
448
25
1210
M 48
950
82
900
580
900
6140000
325
2X0,75
4,4
2580
9730
105
1285
1545
1345
1156
630
483
25
1290
M 48
1040
82
1000
860000 1020000 1290000 2020000 2450000 3070000 3610000 4390000 5040000
640
1000
7220000
280
2X0,75
4,8
3690
11860
130
1365
1650
1450
1254
670
528
25
1400
M 48
1130
82
1060
680
1060
8780000
240
2X0,75
5,2
5090
14220
160
1405
1750
1550
1346
690
538
25
1420
M 48
1230
82
1130
740
1130
10080000
220
2X0,75
5,4
6730
16380
180
1425
1860
1660
1448
700
548
25
1440
M 48
1300
82

FFS 45 320
d Ø nominal max.
�
Grease
mm: ±
d Ø min.
d Ø max.
Ø max.
d1
Ø min.
Tn
Tp
min.max.
�
J
(WR 2 )
A
B
C
C1
D
E
E1
F
F1
G
H
M
P
P1
Q
A150
1
1
2
3.3
–
mm
mm
mm
Nm
tr/min
omw/min
rpm
min -1
degré
graad
degree
grad
4 kgm 2
5 kg
6 dm 3
10
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
45
45
50
55
0,75
Consult Fenner Power Transmission Distributor.
Dimensions in mm without engagement.
0
0
1300
2600
0,005
4,1
0,023
88
111
80
80
67
43
40
41
43,5
5
117
60
60
0
64
75
0
2800
5600
0,75
0,016
8,2
0,037
102
141
103,5
103,5
87
50
47
47
50,5
5
133,5
75
75
*
0
78
95
0
5000
10000
0,75
0,040
14,6
0,065
125
171
129,5
126
106
62
58
58,5
61,5
5
167,5
95
95
0
98
110
0
10000
20000
0,75
0,107
26,5
0,104
156
210
156
152
130
76
74
68,5
77,5
6
202
110
110
0
112
130
0
16000
32000
0,75
0,197
39,6
0,181
183
234
181
178
151
90
87
82
90,5
6
238
130
130
55
132
155
55
22000
44000
0,75
0,446
60,3
0,261
212,5
274
209
208
178
105
101
98
104,5
6,5
279,5
65
158
180
65
32000
64000
0,75
0,868
90,3
0,398
239,5
312
247
245
213
120
113
108,5
116,5
6,5
312,5
Escogear Couplings
max. 0,75 o
Type FFS
155 175 195 215 240 275 280
155
280
*
*
175 195 215 240 275
80
175
200
80
45000
90000
0,75
1,362
119,0
0,488
272
337
273
270
235
135
129
121
133
8
353
M 12
205
235
18
90
198
230
90
62000
124000
0,75
2,584
174,3
0,756
308
380
307
305
263
150
150
132
154
8
396
M 16
226
265
24
100
217
250
100
168000
0,75
3,900
231,1
1,009
358
405
338
330
286
175
175
151,5
179
8
460
M 16
250
290
24
120
244
280
120
230000
0,75
5,650
285,2
1,215
390
444
368
362
316
190
190
165
196
10
504
M 16
276
320
24
150
290
330
150
348000
0,75
11,446
429,3
1,643
453
506
426
419
372
220
220
183,5
228
13
572
M 20
330
370
30
180
320
360
180
488000
0,75
22,6
648
3,2
573
591
472
394
280
280
225
288
13
606
M 20
336
416
30
320
*
320
200
350
400
200
84000 115000 174000 244000 290000
580000
0,75
34,5
822
3,8
598,5
640
518
432
292
292
234
300
14,5
637
M 20
377
456
30
Drive Couplings 231
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
FMM 45 320
232 Drive Couplings

FDMM 45 320
Escogear Couplings
Drive Couplings 233
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
FLE 45 275
234 Drive Couplings

FSV 45 275
Escogear Couplings
Drive Couplings 235
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
ESCO FST SERIES
1. Introduction
Coupling must be selected properly according to selection chart . These documents are available from page 183 or on our web site
"www.escocoupling.com". Maximum misalignment figures at assembly are given is this document (see point 4: assembly). Max misalignment,
max speed and max torque may not be applied simultaneously. In case of any change or adaptation not performed by ESCO on the coupling, it
is customer responsibility to size and manufacture it properly to guarantee safe torque transmission and absence of unbalance that could affect the
life of the coupling and the connected machines. It is customer responsibility to make sure that shaft and key material, size and tolerance suit the
application. Maximum bore capacity is given in the catalogue. It is customer's responsibility to make sure that hub length, bore size and machining
tolerances will transmit the torque. It is customer's responsibility to make sure that interference and machining tolerances will transmit the torque
and not exceed hub material permissible stress. The hubs must be axially secured on the shaft by means of a setscrew, an end plate or a sufficient
interference. It is customer's responsibility to size and manufacture it properly to guarantee safe torque transmission and absence of unbalance
that could affect the life of the gearing. It is customer responsibility to protect the coupling by p.ex. a coupling guard and to comply with the local
safety rules regarding the protection of rotating parts.
2. Preparation
Ensure the conformity of the supplied equipment:
– Verify coupling size and conformity (see catalogue or web site)
– Identify any damaged and/or missing parts
– Verify conformity of the coupling/machine interfaces.
Coupling original protection allows for storage indoors dry 18 months, indoor humid 12 months, outdoors covered 9 months and outdoors open 3
months. For longer periods, it is customer responsibility to protect the parts properly. Instructions are a part of the supply of the coupling. Be sure
valid and complete assembly, operation and maintenance instructions are available. Make sure they are well understood. Assembly, disassembly
and maintenance must be performed by qualified, trained and competent fitters. Before starting with assembly, disassembly and maintenance,
verify the availability of the tooling necessary.
– To manipulate the parts – To assemble the interfaces – To align the coupling – To tighten the screws and nuts
3. Warnings
Before removing the coupling guard and proceeding with any assembly, operation or maintenance operation of the coupling, make sure the
complete system is completely shut down and definitively disengaged from any possible source of rotation, such as, for example:
– Electrical power supply – Any loss of braking effect.
Make sure everyone attending the equipment area will be properly informed (for example by means of warning properly located) about the
maintenance or assembly situation.
In case of use in explosive atmospheres Ex
, specific protective measures must be considered. They are described in an extra attachment
(IM/A200-Ex) to the actual instructions with the couplings marked Ex .
4. Assembly
4.1. Coupling without end-cap
4.1.1. Ensure all parts are clean.
4.1.2. Apply a light coat of grease to the O-Rings A and insert O-Rings into grooves J of sleeves B.
4.1.3. Place sleeves B over shaft ends. Care should be taken not to damage O-Rings A.
4.1.4. Install hubs C on their respective shafts with the longest hub end towards shaft end or towards machine bearing depending on the
type (see fig. 1 and 3). If needed, for keyway assembly, uniformly heat hubs C (max 120˚C) to install them easily on the shaft, in this
case, avoid any contact between the hub C and O-Ring A. Hub faces have to be flush with shaft end. In case of doubt, please consult
us. Introduce setscrew on key with Loctite and tighten properly.
4.1.5. Install units to be connected in place and check the spacing G between hubs. See tabulation or approved drawing for correct hub
spacing G, according to coupling size. In case of doubt, please consult us.
4.1.6. Align the two shafts, check alighment using an indicator. Alignment precision depends on running speed (see tabulation 4).
4.1.7. Coat hub and sleeve gearing with grease (see tabultaion 3) and slide sleeves B over hubs.
4.1.8. Insert gasket F and bolt sleeves together. Tighten bolts uniformly. See tabulation 2 for correct tightening torque (T1 Nm). Make sure
that sleeves are freely sliding over hubs by axially displacing it to a value equal to G (see tabulation 1).
4.1.9. For the types FST, FMM and FDMM, remove both lube plugs H of one sleeve B and add grease in sufficient amount to overflow with
lubricant holes in horizontal position. For types FFS, FSE, FSLE, FLE, FSP, FIN and FSV repeat this operation for the second sleeve. For
quantity and quality of grease, see tabulation 3. Re-install the 2 plugs H; see tabulation 2 for correct tightening torque (T3 Nm) and key
size (s mm). For type FSV consult us.
4.2. Coupling with end-cap
4.2.1. Ensure all parts are clean.
4.2.2. Apply a light coat of grease to the O-Rings A and insert O-Rings into grooves J of end cap X.
4.2.3. Place end-cap x and gasket xx over shaft ends. Care should be taken not to damage O-Rings A.
4.2.4. Install hubs C on their respective shafts with the longest hub end towards shaft end or towards machine bearing depending on the
type (see fig. 2 and 3). If needed, for keyway assembly, uniformly heat hubs C (max 120˚C) to install them easily on the shaft. In this
case, avoid any contact between the hub C and O-Ring A. Hub faces have to be flush with shaft end. In case of doubt, please consult
us. Introduce setscrew on key with Loctite and tighten properly. In case of interference fit, refer to ESCO for proper instructions.
4.2.5. Install units to be connected in place and check the spacing G between hubs. See tabulation or approved drawing for correct hub
spacing G, according to coupling size. In case of doubt, please consult us.
4.2.6. Align the two shafts, check alighment using an indicator. Alignment precision depends on running speed (see tabulation 4).
4.2.7. Coat hub and sleeve gearing with grease (see tabultaion 3) and slide sleeves B over hubs.Assemble end-caps K and gaskets L on
sleeves B with screws M and locking rings. Tighten screws uniformly. See tabulation 2 for correct tightening torque (T2 Nm) and key
size (s mm).
4.2.8. Insert gasket F and bolt sleeves together. Tighten bolts uniformly. See tabulation 2 for correct tightening torque (T1 Nm) and socket
size. Make sure that sleeves are freely sliding over hubs by axially displacing it to a value equal to G.
4.2.9. For the types FST, FMM and FDMM, remove both lube plugs H of one sleeve B and add grease in sufficient amount to overflow with
lubricant holes in horizontal position. For types FFS, FSE, FSLE, FLE, FSP, FIN and FSV repeat this operation for the second sleeve. For
quantity and quality of grease, see tabulation 3. Re-install the 2 plugs H; see tabulation 2 for correct tightening torque (T3 Nm) and key
size (s mm). For type FSV consult us.
236 Drive Couplings

Escogear Couplings
5. Inspection and maintenance
5.1. INSPECTION
Regular inspection (audio-visual) must occur for leakage, noise, vibration and loss of parts.
5.2. MAINTENANCE
5.2.1. Every 4,000 hours or every year.
Check that sleeves are freely moving axially: follow instructions as indicated in Point 4.1.8 or 4.2.8.
Fill up grease level: Proceed as mentioned under 4.1.9. or 4.2.9.
5.2.2. Every 8,000 hours or every 2 years.
– Remove screws and nuts and gasket F. – Clean and control gearing and sealing – Control alignment, see Point 4.1.6. or 4.2.6.
– Reassemble coupling as per Point 4. It is recommended to replace gasket F and screws and nuts every reassembly.
Drive Couplings 237
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
238 Drive Couplings

FLEXIBLE GEAR COUPLINGS
SERIES C AND C... M
The most compact solution
Compact
Simple and robust
Easy to assemble
Compact
Simple and robust
Only 7 parts:
Two snap rings
Two hubs and one sleeve
Two seals
MOST COMPACT SOLUTION
Thanks to the high torque capacity and the
continuous sleeve design, the Escogear C
and C... M couplings are the most compact
answer to any transmission applications. In
comparison to other types of couplings and
for a given torque they have a substantly
lower weight and reduced outside diameter:
Flanged Gear type : 17% smaller O.D.
Disc type : 30% smaller O.D.
Elastic type : 52% smaller O.D.
This compactness makes the Escogear C
series ideal for use in applications where
space is limited and weight important.
Outside Diameter (mm)
330
280
230
180
130
80
1100
2100
Escogear Couplings
Maximum torque: up to 1174 000 Nm
Bores: up to 290 mm
Maximum torque: up to 8 500 Nm
Bores: up to 110 mm
Torque/OD comparison
3100
4100
5100
Torque Capacity (mm)
6100
Elastic type
Disc type
Flanged Gear type
C and C... m type
7100
Drive Couplings 239
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
SERIES C
AVAILABILITIES
240 Drive Couplings

SERIES N - C - F
HOW TO SELECT THE RIGHT COUPLING SIZE
Escogear Couplings
A. Select the size of Escogear coupling that will accommodate the largest shaft diameter.
B. Make sure this coupling has the required torque capacity according to following formula:
9550 x P x Fu
torque in Nm =
n
P = power in kW — n = speed in rpm — Fu = service factor according to tabulation 1.
The coupling selected (A) must have an equal or greater torque capacity than the result of the formula (B). Otherwise select a larger size
coupling.
Check if peak torque does not exceed tabulated peak torque Tp indicated in the selection chart.
Check also max. allowable misalignment using the graph of tabulation 2.
C. Check if shaft/hub connection will transmit the torque. If necessary, select a longer hub.
TABULATION 1
Driven Machine
Uniform
Moderate
Shocks
Heavy
Shocks
d Ø nominal max.
d Ø min.
d Ø max.
�
�
Grease
Applications
Generators - Blowers: centrifugal vane, fans - Centrifugal pumps and
compressors - Machine tools: auxiliary drives - Conveyors: belt and chain,
uniformly loaded, escalators - Can filling machines and bottling machinery -
Agitators: pure liquids.
Propeller - Waterjet pumps
Blower: lobe - Pumps: gear and lobe types - Vane compressors - Machine tools:
main drives - Conveyors: belt and chain not uniformly fed bucket and screw -
Elevators, cranes, tackles and winches - Wire winding machines, reels, winders
(paper industry) - Agitators liquids and solids, liquids variable density.
Generators (welding) - Reciprocating pumps and compressors - Laundry
washers - Bending roll, punch press, tapping machines - Barkers, calanders,
paper presses - Briquetter machines, cement furnace - Crushers: ore and stone,
hammer mill, rubber mill - Metal mills: forming machines, table conveyors -
Draw Bench, wire drawing and flattening machines - Road and railroad
equipment.
min.max.
LEGEND OF USED PICTOGRAMS
�
�
J
(WR 2 )
Tn
Tp
Dimensions in mm without engagement.
MAXIMUM NOMINAL BORE (mm)
MINIMUM BORE (mm)
MAXIMUM BORE (mm)
MAXIMUM TORQUE (Nm)
MAXIMUM SPEED (rpm)
MAXIMUM OFFSET
(mm)
MAXIMUM ANGULAR
MISALIGNMENT (degree)
INERTIA (kgm 2 )
WEIGHT (kg)
GREASE QUANTITY (dm 3 )
Electric
Motors
Turbines
1,25
1,25 to 1,5
1,5 to 2
Driver Machine
Hydraulic
motors
Gears
drivers
Service Factor Fu
1,5
1,5 to 1,75
1,75 to 2,25
Recriprocating
engine
Electric motors
frequent starts
0,8 to 1,25 1 to 1,5 1,25 to 1,75
Notes for series N – C – F
1,75
1,75 to 2
2 to 2,5
1. For key according to ISO R 773.
2. Gear maximum continuous transmissible torque for the tabulated
misalignment. The effective transmissible torque depends on the
bore and shaft/hub connection.
3. Higher speed on special request.
3.1. For grease withstanding centrifugal acceleration of 1,000g.
See installation and maintenance manual IM.
3.2. For grease withstanding centrifugal acceleration of 2,000g.
See installation and maintenance manual IM.
3.3. Depends on S.
3.4. For long operation in disconnected position contact us.
4. For solid bore.
4.1. Depends on S.
4.2. For solid bore and S minimum.
4.3. Per 100 mm spacer length.
4.4. Depends on L and R.
5. For pilot bored hubs.
5.1. Depends on S.
5.2. For pilot bored hubs and S minimum.
5.3. Per 100 mm spacer length.
5.4. Depends on L and R.
6. See installation and maintenance manual IM.
6.1. Depends on S. Values given for S maximum.
7. On request. For larger S contact us.
8. Values for S minimum. S maximum depends on torque and speed.
9. G must remain constant during operation.
10. Needed to control the alignment and inspect the gears.
* Max. torque, speed and misalignment tabulated values may not be cumulated.
See IM/A300, IM/A300-1.
Drive Couplings 241
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escogear Couplings
TABULATION 2
242 Drive Couplings
T/Tn Ref. (%)
100
90
80
70
60
50
40
30
20
10
HOW TO USE THE GRAPH?
Max. 0,75 o area
Max. 0,5 o area
CST... M
Forbidden Area
Special Design Requested
Max. 0,4 o area
Max. 0,3 o area
CST... M
Size
110
130
155
175
195
215
240
275
Max. 0,2 o area
T n Ref.
kNm
n Ref.
min-1
0
0 10 20 30 40 50 60 70 80 90 100 n/n Ref. (%)
Maximum torque, maximum speed and maximum misalignment may not occur simultaneously.
Graph must be used as follow:
1. Calculate Tn and Tp and select coupling size as usual. Tn = nominal torque – Tp = peak torque.
2. Calculate Tn/Tnref and N/Nref and plot the resulting point in the graph.
3. If the resulting point is located in the white area, a standard coupling may be used as far as maximum misalignment doesn’t exceed the
maximum misalignment indicated in the graph.
4. If the resulting point is located in the shaded area, refer to Fenner Power Transmission Distributor.
Dimensions in mm without engagement.
16
22
32
45
62
84
115
174
6050
5150
4300
3950
3600
3450
3300
3050

CST 30 100
d Ø nominal max.
�
Grease
mm: ±
d Ø min.
d Ø max.
Tn
Tp
J
(WR 2 )
A
B
C
D
E
G
H
J
K
A150
1
2
mm
mm
mm
Nm
tr/min
omw/min
rpm
min
�
-1
3.1
min.max.
3.2
degré
–
graad
degree
grad
– mm
4 kgm 2
5 kg
6 dm 3
mm
mm
mm
mm
mm
mm
mm
mm
mm
30
32
550
2X0,75
Consult Fenner Power Transmission Distributor.
Dimensions in mm without engagement.
0
35
1100
5500
7750
0,1
0,002
2
0,022
80
84
50
50,9
38,5
3
96
3
49
Type CST
Escogear Couplings
max. 1,5 o
40 55 65 80 100
42
0
42
1100
2200
5100
7200
2X0,75
0,14
0,004
3,4
0,036
95
95
65
60,4
46
3
117
5
57
57
22
63
1970
3940
4400
6200
2X0,75
0,14
0,010
6
0,063
110
120
68
82,6
53,5
3
124
5
76
70
25
75
3240
6480
4000
5600
2X0,75
0,19
0,022
9,1
0,114
120
140
80
100
57
6
146
6
95
85
38
90
5600
11200
3600
5100
2X0,75
0,22
0,052
15
0,201
140
168
95
121
67
6
175
6
121
100
38
110
8500
17000
3400
4800
2X0,75
0,23
0,122
29
0,270
222
190
102
143
108
6
223
6
140
Drive Couplings 243
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
ADVANTAGES
WHY ESCODISC?
High Torque and Misalignment capacity
Thanks to the optimised disc shape and thickness (which could be obtained by infinite element
analysis and laser cutting), the optimised number of bolts and the standard use of 12.9
quality bolts, Escodisc couplings have a high torque and misalignment capacity combined
with reduced reaction forces on connected equipment (bearings, mechanical seals....).
Infinite Life
All Escodisc coupligns have been calculated, designed and tested for infinite life. This is
possible thanks to the use of discs in AISI 301 stainless steel with special surface treatment,
the standard use of fillers between the discs to eliminate fretting corrosion and the use of
high Safety margin on catalogue values.
No Buckling
In order to guarantee perfect centring of the spacer under all working condition (very important
for long DBSE applications) and well controlled stresses in the disc pack, Escodisc couplings
have been calculated and tested to have no buckling up to the peak torque. This results in
trouble free operation, maximum efficiency and reduced risk for disc failure.
Flexible Spacer Design
Thanks to the unique design of the Escodisc spacer (flanges bolted to the intermediate tube
section – see catalogue drawings DMU/DPU). its length is easily adaptable to customer
requirements. Therefore quick delivery (even for non-standard DBSE) is possible and customer
stock can be reduced to a minimum level.
Suitable for extreme temperatures and corrosive environment
Escodisc couplings can operate at temperatures as high as 270˚C and as low as -40˚C,
(lower or higher temperature level on request). Furthermore, thanks to the use of stainless
steel discs, the standard use of Dacromet protection for the hardware and a special surface
treatment, Escodisc couplings are ideal for use in a corrosive environment.
Easy assembly and disassembly
To save cost at the assembly and the disassembly stages, the design of all Escodisc couplings
has been optimised (factory assembled disc pack or transmission unit, shipping screws...).
Torque transmission in case of disc pack failure
In the unlikely event of a disc pack failure, the Escodisc couplins have been designed in suc
a way that torque transmissions remains guaranteed for a limited time (through the bolts).
This system furthermore keeps the spacer well centred and works as an anti-fly system
through which optimum user safety can be assured.
244 Drive Couplings

SERIES DL – DMU – DPU
Escodisc Couplings
Drive Couplings 245
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
SERIES DL – DMU – DPU
HOW TO SELECT THE RIGHT COUPLING SIZE
1. MISALIGNMENT CAPACITY
ESCODISC COUPLING CAN ACCOMMODATE 3 TYPES OF MISALIGNMENT:
Axial displacement: Angular misalignment: Offset misalignment:
d mm per coupling a α degree per half coupling: d mm per coupling
r
∆K = max. axial displacement a α = max. (α α ) 1' 2 ∆K = max. offset misalignment
r
(see data sheet)
Max. combined
misalignment during operation is
calculated by using the graph:
∆K = max. angular misalignment w
(see data sheet)
(see data sheet) (∆K =S tg ∆K )
r w
In case of use in potentionally explisive atmospheres Ex , European Directive 94/9/EC,
the combination of misalignement may not exceed 0,8.
At assembly, we however recommend not to exceed 20% of the complete misalignment capacity of the coupling,
See installation and maintenance instructions (IM).
2. TORQUE CAPACITY AND SELECTION
2.1 Tabulated torques are independent from misalignment and speed conditions as far as combined misalignment is within the
specified values (see above) and speed does not exceed tabulated values.
2.2 How to select?
A. First select the size of ESCODISC coupling that will accommodate the largest shaft diameter.
B. Make sure this coupling has the required nominal torque capacity according to the formula: Torque in Nm=
Where P = Power in kW, n = speed in min-1 F = Service factor depending on the connected machine (see below).
u
F Ex = 1,5 in case of use in potentionally explosive atmospheres Ex . In normal atmospheres, F Ex = 1.
The coupling selected per A must have an equal or greater nominal torque capacity Tn (see planographs A104 to A121) than
the resultof the formula B. If not, select a larger size coupling.
C. Check that the selected coupling has the required peak torque capacity according to the following formula:
Calculated peak torque = Peak torque of the application x F Ex ; F Ex , see above (Point B).
For application with direct starting of an AC motor, the transmitted peak torque has to be calculated with the following formula:
Calculated Peak Torque =
where T = nominal torque of motor (Nm)
nm
J = inertia of motor (kgm 1
2 )
J = inertia of the driven machine (kgm 2
2 )
F Ex
= see above(point B).
Peak torque capacity Tp of the coupling (see planographs A105 to A121) must be higher than the calculated peak torque. If not, select
a larger coupling.
D. Check if shaft/hub assembly will transmit the torque. (If in doubt, please consult Fenner Power Transmission).
E. Read carefully assembly and maintenance instructions.
246 Drive Couplings

SERIES DL – DMU – DPU
Escodisc Couplings
2.3 Service Factor F U
Service factor depends on coupled machines (driver and driven = F M ) and on the working condition (F W ). F U = F M . F W
Dimensions in mm without engagement.
Driver Machine
Driver Machine
FM = FN Electric and hydraulic motors, Turbines See tabulation
FM= FN +0,4 Poston engine with 4 cylinders and more
FM = FN + 0,9 Piston engine with 1 to 3 cylinders below for FN F = 1 for non reversing applications – F = 1,25 for reversing applications – for more than 2 starts per min.
W W
Driver Machine FN Driver Machine
Centrifugal pumps
Low inertia and light liquids 1
High inertia * and/or heavy liquids 1,75
Reciprocating 2,5
Gears 1,5
Propeller 1,25
Waterjet pump1 1,25
Agitators
Low inertia and light liquids 1
High inertia * and/or heavy liquids 1,75
Ventilators, axial or radial blowing
Low inertia 1
Great capacity *, cooling tower 2
Compressors
Centrifugal 1,5
Reciprocating 2,5
Machine tool
Main drivers 1,75
Auxiliary drivers 1
Generators
Continuous duty 1
Welding 1,75
* If J1 < 2 J2 with J1 = inertia of electric motor and J2 = inertia of the drivenmachine.
Machines – Various
– laundry washer 1,75
– packing and bottling 1,5
– paper and textile 2
– rubber mill 2
– wood and plastic 1,5
Handling equipment
Conveyor 1,75
Crane 2
Elevator 1,5
Hoist 1,75
Mining, cement, briquetting
Crusher 3
Mixer (concrete) 1,75
Rotating oven 2
Metallurgy
Continuous casting 2,5
Convertor 2,5
Shear, Stripmill 2,25
Wire drawing 2
LEGEND OF USED PICTOGRAMS Notes for series DL – DMU – DPU
MAXIMUM BORE (mm)
MINIMUM BORE (mm)
MAXIMUM NOMINAL TORQUE (Nm)
MAXIMUM PEAK TORQUE (Nm)
MAXIMUM SPEED (rpm)
MAXIMUM ANGULAR
MISALIGHMENT (degree)
MAXIMUM OFFSET
MISALIGNMENT (mm)
MAXIMUM AXIAL
MISALIGNMENT (mm)
INERTIA (kgm 2 )
WEIGHT (kg)
1. For key according to ISO R 773.
2.1 Maximum transmissible torque for:
% ∆ K + % ∆ K +% ∆ K � 100% or 80% in Ex
atmosphere
w r r
3 Higher speed on special request.
3.3 Depend on S.
4 For solid bore.
5 For pilot bored hubs.
8 Values for S minimum. S maximum depends on torque and speed.
11 For larger S, contact us.
12 Following DIN 740.
13 ∆ K � S x tg ∆ K r w
* Max. torque, speed and misalignment tabulated values may not be
cumulated.
F N
Drive Couplings 247
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
248 Drive Couplings
Water Treatment Installation
Cooling Tower

SERIES DMU
The General Purpose High Torque/High Misalignment Solution
Maximum torque capacity: up to 260000 Nm – Bore Capacity: up to 370 mm
General Purpose Design
Because of the high torque, bore and misalignment capacity of the Escodisc DMU coupling
range, its high degree of natural inherent balance (AGMA class 9) up to size 85 and the fact
that it meets the API 610 standards, this coupling is the ideal solution in a multitude of
applications up to 260000 Nm (and larger upon request).
Unitised Disc Pack
The DMU disc pack consists of an optimised number of discs or separated links (for sizes
greater or equal to size 190) and has been factory assembled for easy field assembly. To
eliminate fretting corrosion (which limits disc type coupling life), stainless steel fillers between
the discs are used.
Close Coupled Design
The Escodisc DMU coupling is also available in close coupled design (DMUCC). The high
torque/bore capacity makes it an ideal maintenance free alternative for close coupled gear
and elastic type couplings and can be modified in such a way that replacement of gear and
elastic couplings is possible without axial displacement of the connected machines.
Escodisc Couplings
Drive Couplings 249
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
DMU
Escodisc Series DMU – Quick Selection Table
Coupling
Size
DMU 38–45
DMU 45–55
DMU 55–65
DMU 65–75
DMU 75–90
DMU 85–105
DMU 95–105
DMU 110–120
DMU 125–135
DMU 140–160
DMU 160–185
250 Drive Couplings
Maximum Power (kW)
1000 Rpm 1500 Rpm 1800 Rpm 3000 Rpm 3600 Rpm
SF 1 SF 1,5 SF 2 SF 1 SF 1,5 SF 2 SF 1 SF 1,5 SF 2 SF 1 SF 1,5 SF 2 SF 1 SF 1,5 SF 2
Max.
Bore
(Rpm)
20 13 10 30 20 15 36 24 18 60 40 30 72 48 36 16000 45
35 23 17 52 35 26 62 41 31 104 69 52 124 83 62 13600 55
79 52 39 118 79 59 141 94 71 236 157 118 283 188 141 12000 65
139 93 70 209 139 104 251 167 125 418 279 209 501 334 251 10000 75
230 154 115 346 230 173 415 276 207 691 461 346 829 553 415 8600 90
366 244 183 550 366 275 660 440 330 1099 733 550 1319 880 660 7200 195
586 391 293 880 586 440 1056 704 528 1759 1173 880 2111 1407 1056 6400 105
838 558 419 1257 838 628 1508 1005 754 2513 1675 1257 3016 2010 1508 5600 120
1141 761 571 1712 1141 856 2054 1370 1027 3424 2283 1712 4109 2739 2054 5000 135
1487 991 744 2231 1487 1115 2677 1784 1338 4461 2974 2231 5353 3569 2677 4600 160
2074 1383 1037 3109 2073 1554 3735 2490 1868 6226 4151 3113 11245 7497 5623 4000 185
Max.
Bore
(mm)

38–45 160–185
mm ±
A150
A
B
D
E
G
H
K
L
S
X
11
11
1
2.1
3
12
12
12
4
5
11
mm
Nm
tr/min
omw/min
rpm
min -1
degré
graad
degree
grad
mm: ±
mm: ±
kgm 2
kg
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Consult Fenner Power Transmission Distributor. * Balancing needed
Dimensions in mm without engagement.
Escodisc Couplings
Type DMU
38–45 45–55 55–65 65–75 75–90 85–105 95–105 110–120125–135 140–160 160–185
45 55 65 75 90 105 105 120 135 160 185
0 0 0 25 32 38 45 55 65 65 80
190 330 750 1330 2200 3500 5600 8000 10900 14200 19800
290 500 1120 2000 3320 5200 8400 12000 16400 21200 29600
8000 6800 6000 5000 4300 3600 3200 2800 2500 2300 2000
16000* 13600* 12000* 10000* 8600* 7200* 6400* 5600* 5000* 4600* 4000*
2x0,75 2x0,5 2x0,5 2x0,5 2x0,5 2x0,5 2x0,5 2x0,5 2x0,5 2x0,5 2x0,5
2,4 2 2,4 2,6 3 4 4 4,4 5,2 6,6 6,8
0,8 0,8 0,8 0,8 1,1 1,1 1,1 1,4 1,4 2 2
0,0015 0,0004 0,008 0,018 0,04 0,084 0,136 0,262 0,434 0,779 1,436
3,08 4,98 8 12,05 20,12 30,65 39.5 59,8 79,04 115,5 163,6
170 190 200 220 280 310 330 400 430 530 570
88 102 123 147 166 192 224 244 273 303 340
58,5 69,5 82 97,5 113 132 133 154 175 196 228
35 45 50 60 70 85 95 110 125 140 160
100 100 100 100 140 140 140 180 180 250 250
6,7 6,5 7 9 10 13 14 15,5 19 20 20
21 27 48 54 65 76 94 108 123 143 165
41 61 72 86 98 116 134 156 171 191 221
70,6 71 64 60 88 80 76 103 96 160 154
86,6 87 86 82 120 114 112 149 142 210 210
Drive Couplings 251
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
DMU 190–220 360–370
Dimensions in mm without engagement.
252 Drive Couplings
A150
A
B
D
E
G
H
K
L
S
X
1
2.1
3
12
12
12
4
5
mm
Nm
tr/min
omw/min
rpm
min -1
degré
graad
degree
grad
mm: ±
mm: ±
kgm 2
kg
11 mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Type DMU
190–220 220–255 250–290 280–320 320–360 360–370
220
90
30700
46000
18000
2 x 0,33
5
1,4
3
222
630
383
266
190
250
22
204
268
158
206
255
120
53000
80000
1500
2 x 0,33
6,6
1,6
7,3
358
720
445
320
220
280
24,6
254
318
174,8
230,8
290
150
93000
140000
1300
2 x 0,25
7,6
1,3
11,6
418
800
515
350
250
300
38
292
364
160
224
320
180
120000
180000
1200
2 x 0,25
8
1,4
23
680
900
554
392
280
340
41
314
394
186
258
360
200
167000
250000
1050
2 x 0,2
9
1,3
36
916
1020
604
431
320
380
44,9
330
426
217,2
290,2
370
200
260000
390000
900
2 x 0,2
6
1,4
72
1400
1120
704
504
360
400
34
432
528
252
332

DMUCC 45–45 160–170
mm ±
A105
A
A1
B
D
E
E1*
G
G1*
H
D
1
2.1
3
12
12
12
4
5
11
11
11
mm
Nm
tr/min
omw/min
rpm
min -1
degré
graad
degree
grad
mm: ±
mm: ±
kgm 2
kg
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
* E1 and G1 are min. dimensions to allow disc-pack disassembly without moving the machines.
Dimensions in mm without engagement.
Escodisc Couplings
Type DMUCC
45–45 55–50 65–65 75–75 85–90 95–95 110–115 125–130 140–140 160–170
45
0
330
500
6800
2 x 0,5
2
0,8
0,006
4,52
93
108
102
59
45
43
3
7
6,5
46
50
0
750
1120
6000
2 x 0,5
2,4
0,8
0,014
7,57
103
123
123
70
50
47,5
3
8
7
43
65
25
1330
2000
5000
2 x 0,5
2,6
0,8
0,032
12,01
122
146
147
84
59
56
4
10
9
54
75
32
2200
3320
4300
2 x 0,5
3
0,8
0,062
17,42
132
160
166
97
64
60,5
4
11
10
46
90
38
3500
5200
3600
2 x 0,5
4
1,1
0,135
29,08
174
204
192
112
85
80
4
14
13
76
95
45
5600
8400
3200
2 x 0,5
4
1,1
0,272
42,7
194
230
224
126
95
89,5
4
15
14
88
115
55
8000
12000
28000
2 x 0,5
4,4
1,4
0,459
61,2
226
269
244
151
110
104,8
6
16,5
15,5
98
130
65
10900
16400
2500
2 x 0,5
5,2
1,4
0,8
84,3
256
302
273
166
125
118
6
20
19
117
140
65
14200
21200
2300
2 x 0,5
6,6
2
1,36
118
286
336
303
182
140
132,5
6
21
20
135
170
80
19800
29600
2000
2 x 0,5
6,8
Drive Couplings 253
2
2,5
170
328
382
340
213
160
153,5
8
21
20
167
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
DMUFR 38–45 160–185
mm ±
Consult Fenner Power Transmission Distributor. * Balancing needed
Dimensions in mm without engagement.
254 Drive Couplings
A150
A
B
D
E
H
1
2.1
3
12
12
12
4
5
mm
Nm
tr/min
omw/min
rpm
min -1
degré
graad
degree
grad
mm: ±
mm: ±
kgm 2
kg
11 mm
mm
mm
mm
mm
Type DMUFR
38–45 45–55 55–65 65–75 75–90 85–105 95–105 110–120 125–135 140–160 160–185
45 55 65 75 90 105 105 120 135 160 185
0 0 0 25 32 38 45 55 65 65 80
190 330 750 1330 2200 3500 5600 8000 10900 14200 19800
290 500 1120 2000 3320 5200 8400 12000 16400 21200 29600
8000 6800 6000 5000 4300 3600 3200 2800 2500 2300 2000
16000* 13600* 12000* 10000* 8600* 7200* 6400* 5600* 5000* 4600* 4000*
0.75 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5
1,2 1 1,2 1,3 1,5 2 2 2,2 2,6 3,3 3,4
0 0 0 0 0 0 0 0 0 0 0
0,001 0,003 0,008 0,015 0,032 0,0683 0,1095 0,2035 0,3493 0,601 1,136
1,91 3,23 8 8,3 8,3 13,15 21,13 26,21 38,94 115,5 163,6
76,7
88
58,5
35
6,7
96,5
102
69,5
45
6,5
107
123
82
50
7
129
147
97,5
60
9
150
166
113
70
10
183
192
132
85
13
204
224
133
95
14
235,5
244
154
110
15,5
269
273
175
125
19
300
303
196
140
20
340
340
228
160
20

ESCODISC SERIES DMU
Escodisc Couplings
1. Introduction
Coupling must be selected properly according to selection charts. These documents are available in coupling catalogue or on our web site
"www.escocoupling.com". Maximum misalignment figures at assembly are given is this document (see point 4: assembly). Max misalignment
figures in operation (combination of radial, angular and axial) are given in catalogue. Max misalignment values may not be applied simultaneously.
as mentioned in selection. It is customer's responsibility to size and manufacture it properly to guarantee safe torque transmission and absence of
unbalance that could affect the life of the coupling and the connected machines. It is customer's responsibility to make sure that hub length, bore
size and machining tolerances will transmit the torque. It is customer's responsibility to make sure that interference and machining tolerances will
transmit the torque and not exceed hub material permissible stress. The hubs must be axially secured on the shaft by means of a setscrew, an end
plate or a sufficient interference. It is customer's responsibility to size and manufacture it properly to guarantee safe torque transmission and
absence of unbalance that could affect the life of the Discs. It is customer responsibility to protect the coupling by p.ex. a coupling guard and to
comply with the local safety rules regarding the protection of rotating parts.
2. Preparation
Ensure the conformity of the supplied equipment:
– Verify coupling size and conformity (see catalogue or web site).
– Identify any damaged and/or missing parts.
– Verify conformity of the coupling/machine interfaces.
Coupling original protection allows for storage indoors dry 18 months, indoor humid 12 months, outdoors covered 9 months and outdoors open
3 months. For longer periods, it is customer responsibility to protect the parts properly. Instructions are a psrt of the supply of the coupling. Be
sure valud and complete assembly, operation and maintenance instructions are available. Make sure they are well understood. Assembly,
disassembly and maintenance must be performed by qualified, trained and competent fitters. Before starting with assembly, disassembly and
maintenance, verify the availability of the tooling necessary.
– To manipulate the parts – To assemble the interfaces – To align the coupling
– To tighten the screws and nuts
3. Warnings
Before removing the coupling guard and proceeding with any assembly, operation or maintenance operation of the coupling, make sure the
complete system is completely shut down and definitively disengaged from any possible source of rotation, such as, for example:
– Electrical power supply – Any loss of braking effect.
Make sure everyone attending the equipment area will be properly informed (for example by means of warning properly located) about the
maintenance or assembly situation.
In case of use in explosive atmospheres Ex , specific protective measures must be considered. They are described in an extra
attachment (IM/A100-Ex) to the actual instructions with the couplings marked Ex
.
4. Assembly
4.0. WARNING
4.0.1. The hubs (1) and the spacer (4) are supplied unassembled. The disc-packs (3) are supplied packed with the screws (2) and nuts (5)
under plastic film to ensure a perfect protection. They will only be unpacked during final mounting on the machine.
4.0.2. If coupling is supplied rough bored, bore and keyway must be machined in hubs (1). When machining the bore, surface marked (M)
must be taken as the turning reference.
4.1. ASSEMBLY
4.1.1. Ensure that parts are clean and mount the hubs (1) in the correct position on the shafts of the machines (the flange at the shaft end).
Hub faces must be flush with shaft end. In case of doubt, please consult us. Introduce setscrew on key with Loctite and tighten
properly.
4.1.2. Position the machines to be connected and check distance G between the hubs (fig. 1). See tabulation or approved drawing for
distance G following type of coupling. In case of doubt, please consult us.
4.1.3. Align the shafts using an indicator. The alignment precision (X, Y–Z) is given in the tabulation.
4.1.4. Ensure that the flanges of the hubs (1) and the spacer (4) are perfectly degreased. Unpack the discs and the screws. Mount the discpack
(3) on one hub (1) with screws (2) and nuts (5) in the direction shown on the fig. 2. Tighten to torque T mentioned while holding
the screws still and turning the nuts. See tabulation for tightening torque (T Nm) and socket size (s mm).
4.1.5. Install the spacer (4) between the hubs and connect it to the already assembled disc-pack (3) with screws (2) and nuts (5), in the
direction shown on the fig. 3 (in case of long spacer, it is essential to support the spacer in position from the beginning to the end
of the assembly). Tighten to torque T mentioned in the tabulation while holding the screws still and turning the nuts.
4.1.6. Engage the second disc-pack (3) between the spacer (4) and the second hub (1) and assemble with screws (2) and nuts (5) as
indicated in fig. 4.
4.1.7. Check once again the alignment by measuring the max. value H and the min. value H of the distance between the hub flange and
1 2
the spacer flange (see fig 5). See tabulation for the permissible values.
5. Operation, inspection and maintenance
5.1. OPERATION AND MAINTENANCE
No maintenance is necessary. It is however recommended to verify the alignment (see point 4.1.7.) and the tightening torque of the
screws (2) and nuts(5) (see tabulation) after the first running hours. Every 6.000 hours or 12 month, inspect external discs of disc pack for
any fatigue crack and verify alignment.
5.2. DISASSEMBLY AND INSPECTION
Every 12.000 hours or every 24 month.
5.2.1. Remove the screws (2) and nuts (5) each side.
5.2.2. Remove the spacer (4) and inspect the discs (3). In case of damage, the disc-pack (3) must be replaced.
Drive Couplings 255
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
SERIES DMU
Type
Size
38
45
55
65
75
85
95
110
125
140
160
256 Drive Couplings
Distances
DBSE
G
Standard
mm
38
45
55
65
75
85
95
110
125
140
160
X
mm
0,10
0,10
0,10
0,10
0,12
0,12
0,12
0,15
0,20
0,20
0,20
Y–Z
max.
mm
0,10
0,10
0,20
0,20
0,20
0,25
0,25
0,30
0,30
0,40
0,40
Alignment
H 1 –H 2
max.
mm
0,11
0,12
0,15
0,18
0,20
0,23
0,27
0,30
0,33
0,37
0,42
H 1 –H 2
2
mm
6,7 ± 0,15
6,5 ± 0,20
7,0 ± 0,2
9,0 ± 0,20
10,0 ± 0,30
13,0 ± 0,40
14,0 ± 0,40
15,5 ± 0,40
19,0 ± 0,50
20,0 ± 0,60
20,0 ± 0,70
T
Nm
14
14
34
67
114
180
277
380
540
725
920
Size
s
mm
10
10
13
17
19
22
24
27
30
32
36
Socket
Driver
mm
1/4
1/4
3/8
1/2
1/2
1/2
1/2
3/4
3/4
3/4
3/4

ESCODISC SERIES DMUCC
Escodisc Couplings
1. Introduction
Coupling must be selected properly according to selection chart. These documents are available in coupling catalogue or on our web site
"www.escocoupling.com". Maximum misalignment figures at assembly are given is this document (see point 4: assembly). Max misalignment
figures in operation (combination of radial, angular and axial) are given in catalogue. Max misalignment values may not be applied simultaneously
as mentioned in selection. It is customer's responsibility to size and manufacture it properly to guarantee safe torque transmission and absence of
unbalance that could affect the life of the coupling and the connected machines. It is customer's responsibility to make sure that shaft and key
material, size and tolerance suit the application. Maximum bore capacity is given in the catalogue. It is customer's responsibility to make sure that
hub length, bore size and machining tolerances will transmit the torque. It is customer's responsibility to make sure that interference and machining
tolerances will transmit the torque and not exceed hub material permissible stress. The hubs must be axially secured on the shaft by means of a
setscrew, an end plate or a sufficient interference. It is customer's responsibility to size and manufacture it properly to guarantee safe torque
transmission and absence of unbalance that could affect the life of the Discs. It is customer responsibility to protect the coupling by p.ex. a coupling
guard and to comply with the local safety rules regarding the protection of rotating parts.
2. Preparation
Ensure the conformity of the supplied equipment:
– Verify coupling size and conformity (see catalogue or web site).
– Identify any damaged and/or missing parts.
– Verify conformity of the coupling/machine interfaces.
Coupling original protection allows for storage indoors dry 18 months, indoor humid 12 months, outdoors covered 9 months and outdoors open 3
months. For longer periods, it is customer responsibility to protect the parts properly. Instructions are a part of the supply of the coupling. Be sure
valid and complete assembly, operation and maintenance instructions are available. Make sure they are well understood. Assembly, disassembly
and maintenance must be performed by qualified, trained and competent fitters. Before starting with assembly, disassembly and maintenance,
verify the availability of the tooling necessary.
– To manipulate the parts – To assemble the interfaces – To align the coupling – To tighten the screws and nuts
3. Warnings
Before removing the coupling guard and proceeding with any assembly, operation or maintenance operation of the coupling, make sure the
complete system is completely shut down and definitively disengaged from any possible source of rotation, such as, for example:
– Electrical power supply – Any loss of braking effect.
Make sure everyone attending the equipment area will be properly informed (for example by means of warning properly located) about the
maintenance or assembly situation.
In case of use in explosive atmospheres Ex , specific protective measures must be considered. They are described in an extra attachment
(IM/A100-Ex) to the actual instructions with the couplings marked Ex
.
4. Assembly
4.0. WARNING
4.0.1. The hub sub-assembly including the hub (1), the disc-pack (2), the rings (3), the screws (C), the nuts (B) and the sandwich flange (5) are
factory pre-assembled and may not be disassembled unless in case of disc-pack change (see figure 1 and point 5.2.2.).
4.0.2. The hub sub-assembly indicated in 4.0.1. is supplied compressed and rigidified with shipping screws (10), rings (9) and inserts (8).
These shipping screws must be removed at assembly and before starting the machines (see point 4.1.8.).
4.0.3. If hubs are supplied rough bored, bore and keyway must be machined in the hubs (1):
• Without dismounting the sub-assembly (see point 0.1.)
• Without dismounting the shipping screws (10)
• Taking the surface marked (M) as the turning reference.
4.1. ASSEMBLY
4.1.1. Dismount spacer in two parts (4) by removing screws (7) and washers (6) on both sides.
4.1.2. Clean all the parts thoroughly.
4.1.3. Mount the hub sub-assemblies on their respective shafts. The hub faces must be flush with the shaft ends. In case of doubt, please
consult us.
4.1.4. Position the units to be connected and check the distance G between the hubs (for spacer (4) in one piece, check also distance A). See
tabulation or (in case of a special esecution) an approved drawing for the distance G corresponding to the coupling size. In case of
doubt, please consult us.
4.1.5. Align the two shafts (see figure 2 and 3). Alignment precision (X and Y–Z) is given in tabulation.
4.1.6. Ensure that spacer (4) ends and sandwich flanges (5) faces are perfectly degreased. Introduce spacer in two parts (4) between the two
sub-assemblies. Engage 2 or 1 screws (7) with their rings (6) in both ends of both spacer parts (4).
4.1.7. Remove the shipping screws (10) with their rings (9) and their inserts (8) at each end (see fig. 4) and engage the 3 remaining screws (7)
with their rings (6) in each spacer end (see fig. 4). Tighten screws uniformly using the tightening torque (T1 in Nm) and key size (s mm)
indicated in tabulation.
4.1.8. Check alignment and axial distane by measuring the max. value H1 and the min. value H2 of the distane between the hub (1) flange and
the sandwich flange (5) (see fig. 5). See tabulation for permissible values.
5. Operation, inspection and maintenance
5.1. OPERATION AND MAINTENANCE
No maintenance is necessary. It is however recommended to verify the alignment and tightening torque T1 of the screws (7) after the first
running hours. Every 6.000 hours or 12 month, inspect external discs of disc pack for any fatigue crack and verify alignment.
5.2. DISASSEMBLY AND INSPECTION
Every 12.000 hours or every 24 month.
5.2.1. Remove the 6 screws (7) with their rings (6) on both sides. Introduce the shipping screws (10) with their rings (9) and their inserts (8)
at each end and tighten the screws (10) to compress the two disc-packs. Note that the minimum distance H0 in stationary condition
between the hub (1) flange and the sandwich flange (5) should never be less than H0 value given in tabulation.
5.2.2. Remove the spacer (4) in two parts and inspect the discs (2). In case of breakage, the disc-packs (2) must e replaced respecting
assembly indicated in the figure 1. The tightening torque T2 (in Nm) and socket size (s mm) of the screws (C) and the nuts(B) is given
tabulation.
Drive Couplings 257
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
SERIES DMUCC
Type
Size
45
55
65
75
85
95
110
125
140
160
G
Standard
mm
258 Drive Couplings
3
3
4
4
4
4
6
6
6
8
Distances
DBSE
A
Standard
mm
93
103
122
132
174
194
226
256
286
328
X
mm
0,10
0,10
0,10
0,10
0,20
0,20
0,20
0,25
0,30
0,35
Y–Z
max.
mm
0,10
0,20
0,20
0,20
0,25
0,25
0,30
0,30
0,40
0,40
Alignment
H 1 –H 2
max.
mm
0,12
0,16
0,19
0,22
0,25
0,29
0,32
0,36
0,40
0,45
H 1 –H 2
2
mm
6,5 ± 0,20
7,0 ± 0,20
9,0 ± 0,20
10,0 ± 0,30
13,0 ± 0,40
14,0± 0,40
15,5 ± 0,50
19,0 ± 0,50
20,0 ± 0,50
20,0 ± 0,60
H 0
mm
5,5
5,7
7,6
8,3
11
12
13,4
17,0
17,5
17,5
T3
Nm
8,1
13,2
32
55
63
100
108
180
230
280
Spacer
S
mm
4
5
6
8
8
10
10
12
14
14
T2
Nm
14
34
67
114
180
277
380
540
725
920
Disc Pack
Size
mm
10
13
17
19
22
24
27
30
32
36
Driver
mm
1/4
3/8
1/2
1/2
1/2
1/2
3/4
3/4
3/4
3/4

SERIES DPU
The easy to assemble High Torque/High Misalignment Solution
Maximum torque capacity: up to 23100 Nm – Bore Capacity: up to 220 mm
Easy assembly and disassembly
Thanks to the standard use of shipping screws and the factory assembled transmission
unit, Escodisc DPU couplings combine the high torque and misalignment capacity of the
DMU couplings with easiness of asssembly. On average users can cut down assembly and
disassembly costs by 50% when using Escodisc DPU couplings. Furthermore, because
the transmission unit is factory assembled, the risk for assembly errors is reduced to an
absolute minimum level which results in reliable operation and extended life of the coupling.
High Speed/Long DBSE applications
Thanks to the concept of the DPU coupling range (centering spigots) and the high
manufacturing standards, it is ideal for use in medium to high speed applications with no or
minor modificatios. Furthermore, thanks to the perfect centering of the transmission unit,
it can be used in applications where a long DBSE is required (e.g. cooling towers) and it can
be adapted to meet the API 671 requirements.
Large Bore Capacity
The Large Hub execution (L-hub) of the Escodisc DPU series makes selection virtually
independent of the shaft size which makes it possible in several applications to downsize
compared with DMU type couplings.
Escodisc Couplings
Drive Couplings 259
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
DPU
Escodisc Series DPU – Quick Selection Table
Coupling
Size
DMU 38–60
DMU 45–70
DMU 55–80
DMU 65–100
DMU 75–110
DMU 85–130
DMU 95–145
DMU 110–160
DMU 125–180
DMU 140–200
DMU 160–220
260 Drive Couplings
Maximum Power (kW)
1000 Rpm 1500 Rpm 1800 Rpm 3000 Rpm 3600 Rpm
SF 1 SF 1,5 SF 2 SF 1 SF 1,5 SF 2 SF 1 SF 1,5 SF 2 SF 1 SF 1,5 SF 2 SF 1 SF 1,5 SF 2
Max.
Speed
(Rpm)
Max.
Bore
S-Hub
(mm)
20 13 10 30 20 15 36 24 18 60 40 30 72 48 36 24000 45 60
35 23 17 52 35 26 62 41 31 104 69 52 124 83 62 20400 55 70
79 52 39 118 79 59 141 94 71 236 157 118 283 188 141 18000 65 80
139 93 70 209 139 104 251 167 125 418 279 209 501 334 251 15000 75 100
230 154 115 346 230 173 415 276 207 691 461 346 829 553 415 12900 90 110
366 244 183 550 366 275 660 440 330 1099 733 550 1319 880 660 10800 105 130
696 464 348 1044 696 522 1253 836 627 2089 1393 1044 2507 1671 1253 9600 105 145
979 653 490 1469 979 734 1762 1175 881 2937 1958 1469 3525 2350 1762 8400 120 160
1330 887 665 1995 1330 997 2394 1596 1197 3990 2660 1995 4887 3192 2394 7500 135 180
1738 1159 869 2607 1738 1304 3129 2086 1564 5215 3476 2607 6258 4172 3129 6900 160 200
2149 1613 1075 3626 2418 1813 4358 2906 2179 7624 4843 3812 8719 5811 4359 6000 185 220
Max.
Bore
L-Hub
(mm)

38–60 160–220
mm ±
A105
• For DPUSS * Balancing needed
Dimensions in mm without engagement.
A
B
D
E
G
H
K
L
S
1
1
2.1
3
12
12
12
13
4
5
11
11
11
mm
mm
Nm
tr/min
omw/min
rpm
min -1
degré
graad
degree
grad
mm: ±
mm: ±
kgm 2
kg
mm
mm
mm
mm
mm
mm
mm
mm
mm
4 bolts
DPUSS
Escodisc Couplings
Type DPU
38–60 45–70 55–80 65–100 75–110 85–130 95–145 110–160 125–180 140–200 160–220
45 55 65 75 90 105 105 120 135 160 185
0 0 0 25 32 38 45 55 65 65 80
60 70 80 100 110 130 145 160 180 200 220
0 0 0 25 32 38 45 55 65 65 80
190 330 750 1330 2200 3500 6650 9350 12700 16600 23100
290 500 1120 2000 3320 5200 10000 14000 19100 24900 34650
8000 6800 6000 5000 4300 3600 3200 2800 2500 2300 2000
24000* 20400* 18000* 15000* 12900* 10800* 9600* 8400* 7500* 6900* 6000*
2x0,75 2x0,5 2x0,5 2x0,5 2x0,5 2x0,5 2x0,33 2x0,33 2x0,33 2x0,33 2x0,33
2,4 2 2,6 2,8 3,2 4 2,5 2,8 2,6 3 3,4
0,6 0,6 0,6 0,9 0,8 1,1 1 1,4 1,4 1,4 1,4
0,003 0,0057 0,015 0,033 0,07 0,145 0,259 0,475 0,775 1,3 2,39
3,54 5,49 9,07 14,8 22,8 36,35 47 71,7 94,2 128 179
170 190 200 260 280 350 370 470 500 530 570
88 102 123 147 166 192 224 244 273 303 340
58,5 69,5 82 97,5 113 132 133 154 175 196 228
35 45 50 60 70 85 95 110 125 140 160
100 100 100 140 140 180 180 250 250 250 250
7,1 6,5 7 9 10 13 14 15,5 19 20 20
21 37 48 54 65 76 94 108 123 143 165
41 61 72 86 98 116 134 156 171 191 221
51,8 53 40 72 54 82 74 122 111 99 89
< 6 bolts
> <
8 bolts >
Drive Couplings 261
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
EQUIVALENT SELECTION CHART – STANDARD ESCODISC DPU
100
250
500
750
1000
1500
2000
3000
5000
7500
10000
15000
262 Drive Couplings
Escodisc
DPU
38–60
45–75
55–80
65–100
75–110
85–130
95–145
110–160
125–180
140–200
Flender
ARH
96–6
120–6
142–6
162–6
190–6
214–6
230–6
245–6
275–6
310–6
345–6
John Crane
Flexibox
Metastream
TSKS
0013
0033
0075
0135
0230
0350
0500
0740
0930
1400
Jaure
Lamidisc
DO–6
110–6
132–6
158–6
185–6
202–6
228–6
255–6
278–6
302–6
Wellman
Bibby
Euroflex
DJ
62
82
102
103
122
123
142
143
162
163
192
193
232
Kopflex
KD2
053
103
153
203
253
303
Rexnord
Thomas
Series 71
150
175
225
300
350
375
412
462
353 512
403
453
562
600
712
800

Cement Mill
Escodisc Couplings
Fan application
Drive Couplings 263
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
SHAFT CONNECTIONS
ESCODISC SHAFT CONNECTIONS
264 Drive Couplings

BALANCING
BALANCING OF ESCODISC COUPLINGS
1. Balancing
The actual requirement for balancing of a coupling depends amongst other on:
– Manufacturing quality of the coupling (Natural Inherent Balance Quality)
– Application speed
– The mass of the coupling (relative to the masses of the machine rotors)
– Distance between shaft ends
– Sensitivity of the system
Thanks to their high manufacturing quality, escodisc couplings have a high degree of
natural inherent balance and generally don’t require additional balancing for normal speed
applications. Up to size 95, Escodisc DMU/DPU couplings have a minimum balance
quality of Q6.3 at 1500 rpm. For larger sizes, Q6.3 is guaranteed without any additional
balancing until 1000 rpm. In the below graph you can find when additional balancing is
required based on application speed and DBSE. Also you can find the maximum limits
for high speed/long DBSE applications based on the coupling size. Above these limits,
please consult us.
2. Esco Balancing Procedures
Based on the application data or specific customer requirements, Fenner Transmissions
will perform a component blancing to Q6.3 or Q2.5 (as specified – Q1 is obtainable yet
not advisable for standard couplings) for standard couplings and a component balancing
followed by an assembly balancing procedure for high speed applications. Other balancing
options are of course available upon request but must be clearly specified when ordering.
Remark: for DMU couplings, only component balancing is possible.
Escodisc Couplings
Drive Couplings 265
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
ESCODISC SERIES DPU
1. Introduction
Coupling must be selected properly according to selection. These documents are available in coupling catalogue or on our web site
"www.escocoupling.com". Maximum misalignment figures at assembly are given is this document (see point 4: assembly). Max misalignment
figures in operation (combination of radial, angular and axial) are given in catalogue. Max misalignment values may not be applied simultaneously.
In case of any change or adaptation not performed by ESCO on the coupling, it is customer responsibility to size and manufacture it properly to
guarantee safe torque transmission and absence of unbalance that could affect the life of the coupling and the connected machines. It is customer's
responsibility to make sure that shaft and key material, size and tolerance suit the application. Maximum bore capacity is given in the catalogue. It
is customer's responsibility to make sure that hub length, bore size and machining tolerances will transmit the torque. It is customer's responsibility
to make sure that interference and machining tolerances will transmit the torque and not exceed hub material permissible stress. The hubs must
be axially secured on the shaft by means of a setscrew, an end plate or a sufficient interference. It is customer's responsibility to size and
manufacture it properly to guarantee safe torque transmission and absence of unbalance that could affect the life of the Discs. It is customer
responsibility to protect the coupling by p.ex. a coupling guard and to comply with the local safety rules regarding the protection of rotating parts.
2. Preparation
Ensure the conformity of the supplied equipment:
– Verify coupling size and conformity (see catalogue or web site).
– Identify any damaged and/or missing parts.
– Verify conformity of the coupling/machine interfaces.
Coupling original protection allows for storage indoors dry 18 months, indoor humid 12 months, outdoors covered 9 months and outdoors open 3
months. For longer periods, it is customer responsibility to protect the parts properly. Instructions are a part of the supply of the coupling. Be sure
valid and complete assembly, operation and maintenance instructions are available. Make sure they are well understood. Assembly, disassembly
and maintenance must be performed by qualified, trained and competent fitters. Before starting with assembly, disassembly and maintenance,
verify the availability of the tooling necessary.
– To manipulate the parts – To assemble the interfaces – To align the coupling – To tighten the screws and nuts
3. Warnings
Before removing the coupling guard and proceeding with any assembly, operation or maintenance operation of the coupling, make sure the
complete system is completely shut down and definitively disengaged from any possible source of rotation, such as, for example:
– Electrical power supply – Any loss of braking effect.
Make sure everyone attending the equipment area will be properly informed (for example by means of warning properly located) about the
maintenance or assembly situation.
In case of use in explosive atmospheres Ex , specific protective measures must be considered. They are described in an extra attachment
(IM/A100-Ex) to the actual instructions with the couplings marked Ex
.
4. Assembly
4.0. WARNING
4.0.1. The pack sub-assembly (1) including flange DP (1.1) discs (1.2), sandwich flange (1.3) and bolts and nuts (1.4) has to be considered as
one single component. Bolts have been factory tightened for optimal torque transmission and infinite life. It may not be disassembled.
Any external intervention to this sub-assembly (torquing bolts and nuts, seperating components) will automatically cancel suppliers
guarantee, customer being fully responsible of any operation risk and damage.
4.0.2. The pack sub-assembly (1) is supplied compressed and fixed by shipping screws (15). This arrangement protects the flexible discs
during storage and shipment and makes assembly easier. These shipping screws (15) must be removed at assembly and before
starting the machines (see pont 4.1.5.)
4.0.3. If coupling is supplied rough bored, bore and keyway must be machined in hubs (8) and (9). When maching the bore, surface marked
(M) must e taken as the turning reference.
4.0.4. It is customer’s responsibility to protect the coupling and to conform his equipment to local safety legislation.
4.1. ASSEMBLY
4.1.1. Install hubs (8) and (9) on their respective shafts in their proper position (see fig. 6). Hub faces must be flush with shaft end. In case of
doubt, please consult us. Introduce setscrew on key with Loctite and tighten properly.
4.1.2. Position units to be connected and check distance G between the hubs. See tabulation or approved drawing for correct distance G,
according to coupling type. In case of doubt, please consult us.
4.1.3. Align the two shafts using an indicator. Alignment precision (X and Y–Z) is given in alighment tabulation (fig. 6).
4.1.4. Ensure that both spacer ends (2) and DP flange (1.1) are perfectly degreased. Mount (see fig. 2) hub sub-assemblies (1) and spacer (2)
with screws (3) and washers (4). Tighten screws (3) uniformly (tighteneing torque T3). See tabulation for correct tightening torque
(Spacer T3 Nm) and key size (s mm).
4.1.5. Ensure that both hubs faces (8) and (9) and sandwich flange (1.3) are perfectly degreased. Introduce floating assembly between the
two hubs (fig. 3). Remove the shipping screws (15) with rings (17) and shipping inserts (16) at each end (fig. 4). The floating assembly
must be maintained in position by the two hubs (8) and (9). If not, the distance between the hubs and (or) the alignment are wrong and
must be corrected (see points 1.3 and 1.4).
4.1.6. Engage the 6 screws (5) and rings (6) or the 6 screws and washers (7) in each hub (fig. 5). Tighten the screws (5) or (7) uniformly
(tightening torque T5). See tabulation for correct tightening torque (Hubs T5 Nm) and key size (s mm).
4.1.7. Check once again the alignment and axial distance by measuring the max. value H and the min. value H of the distance between
1 2
flange DP (1.1) and sandwich flange 1.3 (see gigure). See tabulation for the permissible values.
5. Operation, inspection and maintenance
5.1. OPERATION AND MAINTENANCE
No maintenance is necessary. It is however recommended to verify the alignment (see point 4.1.7.) and the tightening torque of the screws
(5) (see point4.1.6.) after the first running hours. Every 6.000 hours or 12 month, inspect external discs of disc pack for any fatigue crack and
verify alignment.
5.2. DISASSEMBLY AND INSPECTION
Every 12.000 hours or every 24 month.
5.2.1. Remove the 6 screws (5) or (7) (according to the case) each side. Introduce the shipping screws (15) and shipping inserts (16) and
tighten the screws (15) to compress pack sub-assembly (1). Note that the minimum distance H0 in stationary condition between flange
DP (1.1) and sandwich flange (1.3) should never be less than H0 given in tabulation.
5.2.2. Remove floating assembly (2) and inspects discs (1.2) without dismounting hub sub-assembly (1) (see point 4.0.1). In case of damage,
complete sub-assembly (1) must be replaced.
266 Drive Couplings

SERIES DPU
Type
Size
38
45
55
65
75
85
95
110
125
140
160
Distances
DBSE
G
Standard
mm
100
100
100
140
140
180
180
250
250
250
250
X
mm
0,10
0,10
0,10
0,15
0,15
0,15
0,10
0,15
0,15
0,15
0,15
Y–Z
max.
mm
0,10
0,10
0,15
0,20
0,20
0,25
0,20
0,20
0,25
0,25
0,30
Alignment
H 1 –H 2
max.
mm
0,11
0,12
0,16
0,19
0,22
0,25
0,20
0,20
0,25
0,25
0,30
H 1 –H 2
2
mm
7,1 ± 0,20
6,5 ± 0,20
7,0 ± 0,20
9,0 ± 0,20
10,0 ± 0,30
13,0 ± 0,40
14,0± 0,20
15,5 ± 0,30
19,0 ± 0,30
20,0 ± 0,30
20,0 ± 0,40
Escodisc Couplings
H 0
mm
5,5
5,5
5,7
7,6
8,3
11,0
12,0
13,4
17,0
17,5
17,5
T3
Nm
8,1
13,2
13,2
32
32
63
63
108
108
108
180
Spacer
S
mm
4
5
5
6
6
8
8
10
10
10
12
T5
Nm
8,1
8,1
13,2
32
55
63
100
108
180
230
280
Hubs
s
mm
Drive Couplings 267
4
4
5
6
8
8
10
10
12
14
14
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Escodisc Couplings
ATTACHMENT Ex
: Specific Protective Measures for ESCODISC Couplings in case of use in explosive
atmospheres.
0. Introduction
General assembly and maintenance instructions are established for standard ESCODISC couplings.
In case of use in potentially explosive atmospheres, further to the general assembly and maintenance instructions, the specific measures described
in this attachment must be taken.
1. Coupling Selection
The coupling must be selected according to the general assembly and maintenance instructions.
In explosive atmosphere, the following specific rules must apply:
A Service Factor of 1.5 must be applied on the max torque values for nominal torque (Tn) and peak torque (Tp) given in the tables.
2. Use of the coupling
The coupling is dedicated for use in potentially explosive atmospheres according to European Directive 94/9/EC (Atex 100 A).
Coupling is classified in equipment group II, equipment catetgory 2 and 3, intended for use in areas in which explosive atmospheres caused by
gases, capours, mists of air/dust mixtures are likely to occur.
In function of the ambient temperature in the coupling proximity (85,55, 45˚C), the temperature classes have been defined (T4, T5, T6).
This is based on a temperature increase of the machine shafts (in regard of the ambient temperature) that will not exceed 50˚C in operation.
The coupling is marked as follows: CE Ex 11 2G T4/T5/T6 D 120˚C –20˚C � Ta � 85˚C / 55˚C/ 45˚C
3. Warnings
The warnings mentioned in the general asssembly and maintenance instructions must apply in any case.
In explosive atmosphere, the following specific warnings must apply:
• Complete machining of the coupling parts (bores, keyways, spacers, floating shafts etc...) must be performed by ESCO transmission N.V.
No modification shall be made on the supplied and marked product without the agreement of ESCO Transmissions N.V.
• Before proceeding with any assembly, operation or maintenance operation on the coupling, make sure that the necessary measures have
been taken to ensure safety, such as but not limited to:
Proper ventilation of the area Proper lightening and electrical tools
• If hub must be heated for assembly on the shaft, make sure heating source and surface temperature will not affect the safety of the working
area.
• It is recommended to have a strong coupling guard, preferably in stainless steel with openins (if any) smaller than the smallest centrifugable
part (nut is 10mm dia.). The coupling guard is intended to protect the environment from the centrifugation of any rotating part and the
rotating coupling from any falling part. To limit ventilation effects, distance between cover and coupling outside surface should be at least
10mm.
4. Assembly
The general assembly and maintenance instructions must apply in any case.
In explosive atmosphere, the following specific instructions must apply:
Alignment of the machine in cold condition must take into account the possible heat expansion to make sure that in continuous running
conditions, max misalignment calculated on the base will not exceed 80% of the max allowed value:
Da/∆ka + α/∆kr +dr/∆kr � 0.80.
5. Operation
The general assembly and maintenance instructions must apply in any case.
In explosive atmosphere, the following specific instructions must apply:
• Before Start-up
Make sure coupling is perfectly clean and properly aligned. Make sure, screws, nuts are properly tightened.
Coupling guard must be properly installed and fixed. Monitoring system, if any, must be tested to verify its effectiveness.
• During Start-up
Check for any abnormal noise and/or vibration. If any, immediate stop is mandatory and appropriate action must be taken.
• Checking intervals during operation
After the first 3000 hours or 6 months: • Inspect external disc for any fatigue crack • Verify alignment.
• Continuous checking
Immediately stop the machine if noise, vibrations or other abonormal phenomena are detected during operation.
Further more, if direct check is not possible for access or safety reasons, proper monitoring system has to be installed to follow-up
couplings behaviour
6. Maintenance
The general assembly and maintenance instructions must apply in any case.
In explosive atmosphere Ex , the following specific instruction must apply:
• Every 8.000 hours or 18 month:
Dismount the coupling and inspect. Proceed as indicated in point 4.
268 Drive Couplings

REFERENCES
ESCODISC REFERENCES
Since 1986 escodisc standard, as well as special couplings have been in use in the chemical,
petrochemical, pulp, paper, printing, textile, steel, cement and general machine building
industry to full customer satisfaction.
The field of application is various going from pumps, compressors, fans, turbines to water
treatment installations, machining centers to even test benches for Formula 1 racing car...
Thanks to this, esco has built up a level of expertise and knowledge from which our customers
can benefit.
ABB Lumus Global
Belgian Refining Corporation
BP Amoco Chemicals
Cockerill Sambre
Corus Steel
Dow Chemicals
Fina Refinery
Flowserve Corporation
Howden
KSB Pumps
Pasaban
Pompes d'Ensival
Shell International
Siam Cement
Solvay
Stora Cell
THY Marcinelle
Valmet
Escodisc Couplings
Drive Couplings 269
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Elastic Couplings
SERIES S
Type
1 S
2 S
3 S
4 S
Max
(mm)
16
24
35
42
Dimensions in mm without engagement.
270 Drive Couplings
Min : 6 mm
Max : 42 mm
Min
(mm) Nm
6,0
9,8
13,8
18,8
1,28
4,35
17,90
33,50
min
max
tr/Min
omw/Min
rpm-min -1
6000
5500
4500
4000
( o ) Max
3
3
2
2
Max
(mm)
1
1
2
2
Max
(mm)
1,5
2,0
2,5
3,0
D
C
E
A
(mm)
16
24
35
42
A
B
B
(mm)
27,5
42,0
58,5
75,0
C
(mm)
38
52
71
89
D
(mm)
11
14
22
26
E
(mm)
9,5
12,7
19,0
22,5
0,110
0,350
0,820
2,050

SERIES A-B-C
Example: Part No. = 20A COUPLING
Type
20
24
28
28C
42
60
Type
20
24
28
28C
42
60
Max
(mm)
20
24
28
28
42
60
B
(mm)
46
54
73
–
95
120
Min
(mm) Nm
6
8
9
9
11
25
B2
(mm)
–
–
–
68
–
–
t = 60 o C
Max
13
20
40
40
80
300
C
(mm)
33
35
36
–
51
67
Dimensions in mm without engagement.
min
max
tr/Min
omw/Min
rpm-min -1
C1
(mm)
–
–
33,5
–
47,6
67,0
60000
6000
5000
5000
5000
4000
C2
(mm)
–
–
–
27
–
–
J
(WR 2 )
Flexible Gear Couplings
A B C
Type 20/24 : Nylon
Type 28/42 : Zamak
Zinc alloy
Type 60 : Acier, Staal, Steel, Stahl
( o Max Max
(kgm ) Max (mm) (mm)
2 ) (kg)
0,00001
0,00004
0,00020
0,00020
0,00100
0,00690
D
(mm)
32,0
38,0
44,5
44,5
60,0
85,0
D2
(mm)
–
–
–
56
–
–
DIN 1743/2 : GD - Zn A 14
AFNOR A55-010 : Z - A 4G
BS 1004 : A
ASTM B86 (64) : AG 40A
3,0
3,0
3,0
1,5
3,0
3,0
E
(mm)
22,0
25,0
28,5
28,5
41,3
60,0
0,4
0,4
0,5
0,05
0,6
0,9
E2
(mm)
–
–
–
28,5
–
–
6
6
8
–
13
5
6
6
6
6
8
6
F
(mm)
F1
(mm)
–
–
3,0
–
3,2
5,0
0,07
0,10
0,70
0,68
1,80
7,77
F2
(mm)
–
–
–
3
–
–
Nylon
A
(mm)
50
56
65
–
96
125
G
(mm)
65
71
80
–
116
160
A1
(mm)
–
–
60
–
86
125
G1
(mm)
–
–
65
–
95
160
A2
(mm)
–
–
–
60
–
–
G2
(mm)
–
–
–
76
–
–
Drive Couplings 271
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Keyless Rigid Couplings
272 Drive Couplings

Keyless Rigid Couplings
L = (F1 + F2) + 2 x N - H
M = (F1 + F2) - H
P = G1 + G2
Drive Couplings 273
DRIVE
COUPLINGS

DRIVE
COUPLINGS
FLUID COUPLING
K SERIES
Constant fill up to 2300 kW
PNEUMATIC CLUTCH
TPO SERIES
Up to 11500 Nm
FLUID COUPLING
KPTO SERIES
For internal combustion
engine P.T.O. for pulley and
cardan shaft up to 1700 kW
274 Drive Couplings
Fluid Drive Couplings
FLUID COUPLING
KX SERIES
Oil or water constant fill, Low
drag torque up to 1000 kW
HYDRAULIC CLUTCH
HYDRAULIC BRAKE
SHC-SL SERIES
Up to 2500 Nm
Up to 9000Nm
MULTI PUMP DRIVE
MPD SERIES
Up to 1100 kW
FLUID COUPLING
KSL SERIES
Start up & Variable speed
drive up to 3300 kW
DISC AND DRUM
BRAKE
Up to 19000 Nm
POWER SHIFT
TRANSMISSION
With torque converter one or
more speeds manual or
electric seletor up to 75 kW
FLUID COUPLING
KPT SERIES
Start up & Variable speed
drive up to 1700 kW
OIL OPERATED POWER
TAKE OFF
HF SERIES
Up to 800 kW
ELASTIC COUPLING
RBD SERIES
For internal combustion
engine up to 16000 Nm

K Series Constant Fill Traction Couplings
K SERIES
CONSTANT FILL TRACTION COUPLINGS
Features:
• Rating up to 2300kW
• Single and double delay fill chambers for smooth starting
• Starting torque limitation with the use of calibrated nozzles (externally
adjustable)
• Safety devices available
• Unique taper bush system for ease of installation (no special tools required)
• Viton seals and o-rings
• Common component interchange ability enabling reduced spares holding
KX SERIES
CONSTANT FILL COUPLINGS WITH A SPECIAL PATENTED OIL CIRCUIT DESIGN
(Suitable for large inertia applications such as mills, conveyor drives etc.)
Features:
• Rating up to 1000kW
• Closed circuit with two internal tanks connected by a scoop tube
• Design allows for very low starting torque and current absorption by the
motor
• Fusible plugs blow internally, no oil spillage and mess
• greased for life bearings, Viton seals and o-rings
• Capable of operation with oil and treated water on request
• Available in steel body design for underground mines
OTHER PRODUCTS
VARIABLE FILL COUPLINGS INCLUDING:
• KPT Series up to 1700kW
• KSL Series up to 3300kW
• KPTO Series up to 1700kW (diesel drive applications)
• Multi Pump Drive (MPD) up to 1100kW
Drive Couplings 275
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Flexible Gear Couplings
276 Drive Couplings

Flexible Gear Couplings
Drive Couplings 277
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Flexible Gear Couplings
278 Drive Couplings

Flexible Gear Couplings
Drive Couplings 279
DRIVE
COUPLINGS

DRIVE
COUPLINGS
Flexible Gear Couplings
280 Drive Couplings
281
Please note the colour of insert and cover when ordering
size of coupling

Flexible Gear Couplings
Drive Couplings 281
DRIVE
COUPLINGS

DRIVE
COUPLINGS
282 Drive Couplings
Notes