fluid couplings - Laumayer

K - CK - CCK
FLUID COUPLINGS
drive with us

INDEX
DESCRIPTION page 2
OPERATION 2 ÷ 4
ADVANTAGES 4
PERFORMANCE CURVES 5
VERSIONS 6
LAYOUTS 6
SELECTION 7 ÷ 10
DIMENSIONS 11 ÷ 23
OIL FILL 24
SAFETY DEVICES 24 ÷ 27
PARTICULAR INSTALLATIONS 28
APPLICATIONS 29
OTHER TRANSFLUID PRODUCTS 30
SALES NETWORK
1

DESCRIPTION & OPERATING CONDITIONS
1. DESCRIPTION
The TRANSFLUID coupling (K series) is a constant filling type
comprising three main elements:
1 - driving impeller (pump) mounted on the input shaft.
2 - driven impeller (turbine) mounted on the output shaft.
3 - cover, flanged to the output impeller, with an oil-tight seal.
The first two elements can work both as pump and/or turbine.
2. OPERATING CONDITIONS
The TRANSFLUID coupling is a hydrokinetic transmission. The
impellers perform like a centrifugal pump and a hydraulic turbine.
With an input drive to the pump (e.g. electric motor or Diesel
engine) kinetic energy is imparted to the oil in the coupling. The
oil moves by centrifugal force across the blades of the turbine
towards the outside of the coupling.
This absorbs the kynetic energy and develops a torque which is
always equal to input torque thus causing rotation of the output
shaft. The wear is practically zero since there are no mechanical
connections.
The efficiency is influenced only by the speed difference (slip)
between pump and turbine.
1 - INTERNAL IMPELLER
2 - EXTERNAL IMPELLER
3 - COVER
4 - FLEX COUPLING
2
The slip is essential to the functioning of the coupling: there could
not be torque transmission without slip! The formula for slip, from
which the power loss can be deduced is as follows:
slip % =
input speed – output speed
input speed
x 100
In normal conditions (standard duty), slip can vary from 1,5%
(large power) to 6% (small power).
TRANSFLUID couplings follow the laws of all centrifugal
machines:
1 - transmitted torque is proportional to the square of input
speed;
2 - transmitted power is proportional to the cube of input speed;
3 - transmitted power is proportional to the fifth power of circuit
outside diameter.

FLUID COUPLING FITTED ON ELECTRIC MOTORS
2.1. TRANSFLUID COUPLING FITTED ON ELECTRIC MOTORS
The fluid coupling is mainly fitted on triphase squirrel-cage
motors which supply maximum torque at 85% of rated speed.
With direct-on-line starting, these motors absorb approx. 6 times
nominal current.
The result is an increase of: motor temperature, prime costs
(specially with frequent starts) and the overcoming of limits
imposed on many plants by suppliers of electrical energy.
To avoid these inconveniences, some people substitute direct
starting with other methods.
The most usual method is star-delta starting ( ) that reduces by
about 1/3 the absorbed current and torque required by direct
starting. This method does not eliminate high current peaks
during the initial commutation phase, and with high inertia
machines it is necessary to select an oversized motor to deal with
the long acceleration period during starting. With the inclusion of
a TRANSFLUID coupling the motor starts on very low load with
only an instantaneous current peak at switch-on (see Fig. 2).
At start all the torque is available to accelerate the motor and the
driving impeller. In this phase there is 100% slip until the motor
reaches the maximum torque point (200% of nominal torque).
Then the driven member speed increases progressively whilst
slip reduces to its minimum value. (Fig. 1)
% STARTING TORQUE
slip 100%
slip 2 ÷ 5%
% INPUT SPEED
Ÿ
3
Furthemore the fluid coupling provides protection against
overload or stalling of the driven machine. In these cases, if the
motor were rigidly connected, stopping of the rotor would occur
immediately with overheating and instantaneous increase of
current to the same values or more, of starting current.
With the fluid coupling when these factors occur, the motor
decelerates until 100% of slip is reached (breakdown point).
At this point the absorption of current is considerably less than
the starting current (about 75%). (Fig. 3)
% ABSORBED CURRENT
% ABSORBED CURRENT
WITHOUT COUPLING
WITH COUPLING
% TIME
slip 100%
% INPUT SPEED
% STARTING TORQUE

FLUID COUPLING WITH DELAYED-FILL CHAMBER
THE ADVANTAGES OF FLUID COUPLING
2.2 TRANSFLUID FLUID COUPLINGS WITH A DELAYED FILL
CHAMBER
A low starting torque is achieved and, with the standard circuit
in a maximum oil fill condition, fluid couplings allow not to
overcome 200% of the nominal motor torque. It is possible to
furtherly limit the starting torque down to 160% of the nominal
torque, by decreasing oil fill: this, on the other hand, leads to a
slip and working temperature increase in the fluid coupling.
The most convenient technical solution is to have fluid couplings
with a delayed fill chamber connected to the main circuit by
means of valves with calibrated bleed orifices, externally
adjustable from size 15CK (Fig. 4b).
With a simple operation, it is therefore possible to adjust the
starting time.
In a standstill position, the delayed fill chamber contains a part
of the filling oil, thus reducing the effective quantity in the working
circuit (Fig. 4a): a torque reduction is obtained to allow at the
same time the motor to quickly reach the steady running speed,
as if started without load.
During start-up, oil flows from the delayed fill chamber to the
main circuit (Fig. 4b) in a proportional quantity to the rotating
speed.
As soon as the fluid coupling reaches the nominal speed, all the
oil flows into the main circuit (Fig. 4c) and torque is transmitted
with a minimum slip.
With a simple delayed fill chamber, the ratio between starting
and nominal torque may reach 150 %. This ratio may be furtherly
reduced down to 120 % with a double delayed fill chamber,
which contains a higher oil quantity, to be progressively
transferred into the main circuit during the starting phase.
This is then fit for very smooth start-ups with low torque
absorptions, as typically required for machinery with large inertia
values and for belt conveyors.
The advantages of the delayed fill chamber become more and
more evident when the power to be transmitted furtherly
increases:
the simple chamber is available from size 11CK, while the
double chamber from size 15CCK.
Fig. 4a
AT REST
Fig. 4 b
ACCELERATION
4
3. SUMMARY OF THE ADVANTAGES GIVEN BY FLUID
COUPLINGS
– very smooth start-ups
– reduction of current absorptions during the starting phase: the
motor starts with very low load
– protection of the motor and the driven machine from jams and
overloads
– utilization of asynchronous squirrel cage motors instead of
special motors with soft starter devices
– higher duration and operating convenience of the whole drive
train, thanks to the protection function achieved by the fluid
coupling
– higher energy saving, thanks to the current peaks reduction
– limited starting torque down to 120% in the versions with a
double delayed fill chamber
– same torque at input and output: the motor can supply the
maximum torque also when load is jammed
– torsional vibration absorption for internal combustion engines,
thanks to the presence of a fluid as a power transmission
element
– possibility to achieve a high number of start-ups, also with an
inversion of the rotation sense
– load balancing in case of a double motor drive: fluid couplings
automatically adjust load speed to the motors speed
– high efficiency
– minimum maintenance
– Viton rotating seals
– cast iron and steel material with anticorrosion treatment
valvola valve
grano calibrated calibrato plug
Fig. 4 c
RUNNING

STARTING TORQUE CHARACTERISTICS
4. CHARACTERISTIC CURVES
MI : transmitted torque from fluid coupling
Mm : starting torque of the electric motor
Mn : nominal torque at full load
...... : accelerating torque
K type
(standard circuit)
CK type
(circuit with a
delayed chamber)
CCK type
(circuit with a double
delayed chamber)
Torque
200%
100%
Torque
200%
100%
Torque
200%
100%
Mm
MI
0 5 10 Time [s]
Mm
0 5 10 Time [s]
Mm
MI
5
Mn
Mn
MI Mn
0 5 10 Time [s]
180÷200%
160÷180%
120÷150%

PRODUCTION PROGRAM
5 VERSIONS
5.1 IN LINE
KR-CKR-CCKR : basic coupling (KR), with a simple
(CKR) or double (CCKR) delayed fill
chamber.
KRG-CKRG-CCKRG : basic coupling with elastic coupling
KRM-CKRM-CCKRM (clamp type), or superelastic.
KRB-CKRB-CCKRB : like ..KRG, but with brake drum or
…KRBP brake disc.
KRD-CKRD-CCKRD : basic coupling ..KR with output shaft. It
allows the utilization of other flex
couplings; it is possible to place it (with
a convenient housing) between the
motor and a hollow shaft gearbox.
EK : fluid coupling fitted with a bell housing, to
be placed between a flanged electric
motor and a hollow shaft gearbox.
KCM-CKCM-CCKCM: basic coupling for half gear couplings.
KCG-CKCG-CCKCG : basic ..KCM with half gear couplings. On
request, layout with brake drum or brake
disc.
KDM-CKDM-CCKDM: fluid coupling with disc couplings.
…KDMB : like ..KDM, but with brake drum or
…KDMBP brake disc.
KSD
1
KSI
6.1 IN LINE VERSIONS MOUNTING EXAMPLES
Fig. A Horizontal axis between the motor and the driven
machine (KR-CKR-CCKR and similar).
Fig. B It allows a radial disassembly without moving the
motor and the driven machine (KCG-KDM and similar).
Fig. C Between a flanged electric motor and a hollow shaft
gearbox by means of a bell housing (..KRD and EK).
Fig. D Vertical axis mounting between the electric motor and
a gearbox or driven machine. In case of order,
please specify mounting type 1 or 2.
Fig. E Between the motor and a supported pulley for high
powers and heavy radial loads.
Fig. G
2
KCM
CKR - CCKR
6
KR
5.2 PULLEY
Fig. C
Fig. Fig. E
KRD
CKRG - C
KRG
EK
CKRBP - CCKRBP
N.B.: The ..KCG - ..KDM versions allow a radial disassembly without moving the motor or the driven machine.
KSD–CKSD–CCKSD : basic coupling foreseen for a flanged pulley,
with simple (CK..) or double (CCK..) delayed
fill chamber.
KSI-CKSI-CCKSI : fluid coupling with an incorporated pulley,
which is fitted from inside.
KSDF-CKSDF-CCKS..: basic ..KSD coupling with flanged pulley,
externally mounted and therefore to be easily
disassembled.
Fig. Fig. AA
Fig. Fig. B B
Fig. Fig. D
Fig. F
1
2
6. 2 PULLEY VERSIONS MOUNTING EXAMPLES
Fig. F Horizontal axis.
Fig. G Vertical axis. When ordering, please specify mounting
type 1 or 2.

FLUID COUPLING SELECTION
7. SELECTION
7.1 SELECTION CHART
The chart below may be used to select a unit size from the
horsepower and input speed. If the selection point falls on a size
limit line dividing one size from the other, it is advisable to select
the larger size with a proportionally reduced oil fill.
GENERAL REFERENCE HORSEPOWER CHART
HP kW
HORSEPOWER
INPUT SPEED RPM
THE CURVES SHOW LIMIT CAPACITY OF COUPLING
7
Tab. A

FLUID COUPLING SELECTION
7.2 SELECTION TABLE
Fluid couplings for standard electric motors.
TYPE
MOTOR 3000 rpm • 1800 rpm 1500 rpm
• 1200 rpm
SHAFT
DIA.
71 14
80 19
90S 24
90L 24
100L 28
112M 28
132 38
132M 38
160M 42
160L 42
180M 48
180L 48
200L 55
225S 60
225M
55 (3000)
60
250M
60 (3000)
65
280S
65 (3000)
75
280M
65 (3000)
75
315S
65 (3000)
80
315M
65 (3000)
80
355S
80 (3000)
100
355M
80 (3000)
100
NO - STANDARD
MOTORS
kW HP COUPLING
kW HP COUPLING kW HP COUPLING kW HP COUPLING
0,37
0,55
0,75
1,1
0,5
0,75
1
1,5
_ _
1,5 2 6 K
2,2 3
3 4
4 5,5 7 K
5,5
7,5
7,5
10
18,5
(1)
_ _ _
11
15
15
20
18,5 25 9 K
22 30
(1)
_ _ _
30
37
40
50
11 K (1)
_ _ _
45 60 11 K (1)
55 75 13 K (1)
75 100
90 125
13 K
110 150
132
160 220
(2)
0,25
0,37
0,55
0,75
0,35
0,5
0,75
1
6 K
0,25
0,37
0,55
0,75
0,35
0,5
0,75
1
6 K
0,25
0,37
0,55
0,33
0,5
0,75
_
7 K
0,25
0,37
0,55
0,33
0,5
0,75
_
7 K
1,1 1,5
1,1 1,5
0,75 1
0,75 1
1,5 2
1,5 2
7 K
1,1 1,5
1,1 1,5
8 K
2,2
3
3
4
7 K
2,2
3
3
4
1,5 2 8 K 1,5 2 9 K
4 5,5
4 5,5
8 K
2,2 3
2,2 3
5,5
7,5
7,5
10
8 K 5,5
7,5
7,5
10
9 K
3
4
5,5
4
5,5
7,5
9 K
11 K
3
4
5,5
4
5,5
7,5
11 K
11 15 9 K 11 15
11 K
7,5 10
12 K
7,5 10
12 K
15 20 11 K 15 20
11 15
11 15 13 K
18,5 25
12 K
(11 K) 18,5 25
_ _ _ _ _ _
12 K
22 30 12 K 22 30
15 20
15 20
30
37
40
50
13 K
(12 K)
30
37
40
50
13 K
22
_
25
30
_
13 K
18,5
22
_
25
30
_
15 K
_
13 K
15 K
45 60
45 60
15 K
30 40
30 40 17 K
55 75 15 K 55 75
37 50
37 50
75 100
17 K
(15 K) 75 100
17 K
45 60 17 K 45 60
19 K
90 125
90 125
55 75
55 75
17 K
21 K
110 150
110 150
75 100 19 K
75 100
180
_
132
160
180
220
19 K
132
160
180
220
19 K
21 K
90
110
125
150
21 K
90
110
125
150
24 K
200
250
270
340
_
_
250
315
340
430
21 K
24 K
250
315
340
430
24 K
160
200
250
270
270
340
24 K
27 K
160
200
250
220
270
340
27 K
29 K
max max max
700 952 27 K 510 700 27 K 440 598 29 K 370 500 29 K
• Power refer to motors connected at 380V - 60 Hz
(1) Special version, 24 hours service
(2) Only for KR
NB: The fluid coupling size is tied to the motor shaft dimensions
1000 1360
29 K
8
810 1100
1300 1740
29 K
34 K
2300 3100 D 34 K
800 1088
1350 1836
34 K
D 34 K
1000 rpm
Tab. B
kW HP COUPLING
600 800
950 1300
34 K
D34 K

FLUID COUPLING SELECTION
7.3 PERFORMANCE CALCULATIONS
For frequent starts or high inertia acceleration, it is necessary to
first carry out following calculations. For this purpose it is
necessary to know:
Pm - input power kW
nm - input speed rpm
PL - power absorbed by the load at rated speed kW
nL - speed of driven machine rpm
J - inertia of driven machine Kgm
T - ambient temperature °C
The preliminary selection will be made from the selection graph
Tab. A depending upon input power and speed.
Then check:
A) acceleration time.
B) max allowable temperature.
C) max working cycles per hour
A) Acceleration time t a :
n u • J r
t a = (sec) where:
9,55 • M a
nu = coupling output speed (rpm)
2
Jr = inertia of driven machine referred to coupling shaft (Kgm )
Ma = acceleration torque (Nm)
n u = n m • (
100 - S
)
where S is the percent slip derived from the characteristic
curves of the coupling respect to the absorbed torque ML. If S is not known accurately, the following assumptions may
be made for initial calculations:
4 up to size 13”
3 from size 15” up to size 19”
2 for all larger sizes.
J r = J • (
n L
100
)
n u
PD GD
Note! J = or
4 4
M a = 1,65 M m - M L
2
2 2
9550
where: Mm = (Nominal Torque)
• Pm nm 9550
dove: ML = (Absorbed Torque)
• PL nu 2
9
B) Max allowable temperature.
For simplicity of calculation, ignore the heat dissipated during
acceleration.
Coupling temperature rise during start-up is given by:
Ta =
Q
C
(°C)
where: Q = heat generated during acceleration (kcal)
C = total thermal capacity (metal and oil) of coupling
selected from Tab. C (kcal/°C).
Q = •(
+ ) (kcal)
The final coupling temperature reached at the end of the
acceleration cycle will be:
T f = T + T a + T L (°C)
where: T f = final temperature (°C)
T = ambient temperature (°C)
T a = temperature rise during acceleration (°C)
T L = temperature during steady running (°C)
TL= 2,4 • P •
L S
(°C)
K
where: K = factor from Tab. D
T f =must not exceed 110°C for couplings with
standard gaskets
T f =must not exceed 150°C for couplings with
Viton gaskets
C) Max working cycles per hour H
In addition to the heat generated in the coupling by slip
during steady running, heat is also generated (as calculated
above) during the acceleration period. To allow time for this
heat to be dissipated, one must not exceed the max
allowable number of acceleration cycles per hour.
H max =
nu 10
4
3600
ta + tL J •
r nu 76,5
where t L = minimum working time
M •
L ta 8
tL= 10 • 3 Q
(sec)
T2 a + T •
L K
( )

FLUID COUPLING SELECTION
7.4 CALCULATION EXAMPLE
Assuring: Pm = 20 kW n m = 1450 rpm
Supponendo: P L = 12 kW n L = 700 rpm
Supponendo: J = 350 kgm
Supponendo: T = 25 °C
Transmission via belts.
From selection graph on Tab. A, selected size is 12K.
A) Acceleration time
From curve TF 5078-X (supplied on request) slip S = 4%
100 - 4
nu = 1450 • ( )= 1392 rpm
100
2 700
Jr = 350 • ( )= 88,5 Kgm
1392
9550 •
20
Mm = = 131 Nm
1450
9550 • 12
ML = = 82 Nm
1392
Ma = 1,65 •131 • 82 = 134 Nm
1392 • 88,5
ta = = 96 sec
9,55 • 134
B) Max allowable temperature
1392 88,5 • 1392
+
4
10 76,5
C = 4,2 kcal/°C (Tab. C)
Q = • ( ) = 361 kcal
Ta =
361
4,2
= 86 °C
K = 8,9 (Tab. D)
12
TL = 2,4 = 13 °C
• 4
•
8,9
T f = 25 + 86 + 13 = 124 °C
Viton gaskets needed
C) Max working cycles per hour
tL = 10 • 361
= 724 sec
86
2 + 13 3
( ) • 8,9
3600
H = = 4 starts per hour
96 + 724
2
2
82 •
96
8
10
FACTOR K
Size
6
7
8
9
11
12
13
15
17
19
21
24
27
29
34
D34
Tab. C
THERMAL CAPACITY
K
kcal/°C
0,6
1,2
1,5
2,5
3,2
4,2
6
9
12,8
15,4
21,8
29
43
56
92
138
CK
kcal/°C
OUTPUT SPEED rpm
--
3,7
5
6,8
10
14,6
17,3
25,4
32
50
63
99
–
CCK
kcal/°C
--
10,3
15,8
19,4
27,5
33,8
53,9
66,6
101
–
Tab. D
FACTOR K

FLUID COUPLING SERIES 6 ÷ 19 KR-CKR-CCKR
8. DIMENSIONS
Size
6
7
8
9
only for size “6” only for size “6”
Ø40H7
U
2.5
M
±0.1 f7
P
W C
O
T
V
Q
J
S
R
E
F A
– D BORES RELATIVE TO TAPER BUSHES WITH A KEYWAY ACCORDING TO ISO 773 - DIN 6885/1
PARTICULAR CASES:
• CYLINDRICAL BORE WITHOUT TAPER BUSH
•• CYLINDRICAL BORE WITHOUT TAPER BUSH, WITH A REDUCED KEYWAY (DIN 6885/2) - FOR 7 AND 8KR, Q DIMENSION IS M14
••• TAPER BUSH WITHOUT KEYWAY
– WHEN ORDERING, SPECIFY: SIZE, MODEL, D DIAMETER
EXAMPLE: 11CKR - D 42
* SEE DRAWING DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE
11
N M
±0.1 f7
KR KR
CKR - CCKR CKR - CCKR
Dimensions
bussola taper bush conica
J 1
D
NB: The arrows indicate input and output in the standard version.
I
P
O
In case of installation on shafts without
shoulders, please contact Transfluid
T
B1
B2
C1
C2
albero cylindrical con foro bore cilindico
D J J 1 A B B 1 B 2 C C 1 C 2 E F I M N O P Q R S T U V W Z Weight Kg
(without oil)
KR CKR CCKR KR CKR CCKR Nr. Ø
28 38
11
42••• 48••
111
60
110
80
110
325 107 68,5
154
201 27 195
60 88,9 8 M8 M20 42 56
83
M10 M12
M16
107 27 19 15 12 14,5 2,75 3,35
28 38
12
42••• 48••
60
110
80
110
370 122
75
221 24 145
224
42
83
M10 M12
M16
15,5 18,5 4,1 4,8
13
42 48
143
110
398 137 180 240 28 179 80 122,2
84 M16
7 142 17 17 24 27 5,2 5,8
55••• 60•••
48 55
15
60 65•••
145
110 58,5
110
140
460 151 87 135 205 273 321 35 206 259 90 136
5 8
74 104
80 70
100
M20
M16 M20
M20
156
34
19 19 37 41 48,7 7,65 8,6 9,3
17
48
60
55
65••• 145
110
140 520 170 37
M10 M27
80
103
M16 M20
M20 8
51 57 66 11,7 13,6 14,9
75• 80• 140 170
96 176 223 303 383 225 337 125 160 15 12
103 132
180 34 24 19
48 55 110 80 M16 M20
19 60 65••• 145 140 565 190 17 103
M20
58 64 73 14,2 16,5 18,5
75• 80• 140 170 103 133
J 1
D G7
Oil
max lt
KR CKR CCKR KR CKR CCKR
19• 24• – 45 55 195 60 90,5 29 88 * 53 * 4 – – – – 68 – – 16,5 2,7 0,50
19 24 40 50
228 77 112 22
M12 27 35 M6 M8
5,1 0,92
28 38••
69
60 80
114 40 73 3
M7 M12 M14 40 56 M10 M12
88 21 12 14
24 50
256 91
–
117
–
18
– M12 36 M8
5,5
–
1,5
–
28 38•• 60 80 M12 M14 41 61 M10 M12
28 38 60 80
295 96 145 31
6 43 54 M10 M12 6
10 1,95
42••• 110 110 – – 128 79 M16 – –

FLUID COUPLING SERIES 6 ÷ 19 KRG-…KRB-…KRD
Size
KRB
(with (Con fascia brake freno) drum)
X1 X
Dimensions
H7
KRBP
(with (Con disco brake freno) disc)
G1
j7
KRD
Z
L 1
C 3
C C 1 C 2 C 3 C 4 C 5 G G 1 H K L L 1 Flex Brake Brake Z
coupling drum disc
12
Weight Kg
(without oil)
KRG CKRG CCKRG KRD CKRD CCKRD max X x Y X1x Y1 KRG CKRG CCKRG KRD CKRD CCKRD
6 149 107 28 19 73 40 30 BT 02 on request 3,9 3
7 189
–
133
– 42 28 110 60 40 BT 10 160 x 60
8,3
–
5,7
–
8 194 138 2
on request –
8,7 6,1
9 246 – 176 – 38 16 – 11,6 –
11
255
302
185
232 55
42
132
80
50 BT 20
160 x 60
200 x 75
18 20,5 13 15,5
12
322 252
21,5 24,5 16,7 19,7
13
15
285
343
345
411 459
212
230
272
298 346
70
80
48
60
170
3
110
60
80
BT 30
BT 40
200 x 75
250 x 95
250 x 95
315 x 118
400 x 30
450 x 30
400 x 30
450 x 30
5
35
34
50,3
37
54,3 62
26,3
40,4
29,3
44,4 52,1
17
19
362 442 522 263 343 423 90 75 250 110 100 BT 50 315 x 118
400 x 150
445 x 30
450 x 30
15
77
84
83
90
92
99
58,1
65,1
64,1
71,1
73,1
80,1
– G1 SHAFT BORE WITH A KEYWAY ACCORDING TO ISO 773 - DIN 6885/1
– WHEN ORDERING, SPECIFY: SIZE - MODEL - D DIAMETER
– UPON REQUEST: BORE G 1 MACHINED; G SPECIAL SHAFT
– FOR …KRB - KRBP SERIES SPECIFY X AND Y OR X 1 AND Y 1 DIAMETER
EXAMPLE: 9KRB - D38 - BRAKE DRUM = 160x60
L
Y
Y 1
C
K
KRG
KRD
C1
C2
KRG CKRG - CKRG CCKRG-
CCKRG
NB: The arrows indicate input and output in the standard version.
C4
C5
CKRD - CCKRD CKRD - CCKRD
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE

FLUID COUPLING SERIES 21 ÷ 34 KR-CKR-CCKR
Size
21
24
27
29
34
W
W
O
O
P
P
±0.1 f7
M N U V
±0.1 f7
M N U V
KR
Dimensions
T
T
KR
KR
Z
Z
Q
Q
C
B C E
B E
24
1924
M14 Nr.12 19
M14 Nr.12
570 Ø 570
± 0,1
± 0,1
308 Ø 308
Ø 200 f 7
f 7
200
Ø
Ø
Ø
6
6
S
S
R
R
J
J
D A
G7 F
D A
G7 F
C
C
22
722
M16 Nr.10 7
M16 Nr.10
Ø 480 ± 0,1
Ø 480 ± 0,1
Ø 200 f 7
Ø 200 f 7
I N M
±0.1 f7
I N M
±0.1 f7
P
P
O
O
T
T
Z
Z
CKR - CCKR
CKR - CCKR
C1
C2 C1
C2
34KR 34KR 34CKR 34CKR - - 34CCKR
34CCKR
34KR
34CKR - 34CCKR
13
B1
B2 B1
B2
NB: The arrows indicate input and output in the standard version.
C1
C2 C1
C2
Size
Dimensions
D J A B B 1 B 2 C C 1 C 2 E F I M N O P Q R S T U V W Z
KR CKR CCKR KR CKR CCKR Nr. Ø
•80 90 170
620 205
260 360 450
45
130 M20 M24
•❒100 210
110 200
295 395 485
250 400 160 228 5 M14 M36
165 M24
•80 90 170
710 229
260 360 450 21 130 M20 M24
•❒100 210 295 395 485 56 8 165 M24 14
120 max 210 780 278 297 415 515 6 315
200 275 7 M16
135 max 240 860 295 131 231 326 444 544 18 350 537 M45
150 max 265 1000 368 387 518 618 19 400 * * * * *
CKR - CCKR
167 M24
(for max bore)
167 M24
(for max bore)
200 M36
(for max bore)
Weight Kg
(without oil)
255 40 15 30
– –
308 33
– –
* * – – *
• STANDARD DIMENSIONS WITH A KEYWAY ACCORDING TO ISO 773 - DIN 6885/1
❒
*
REDUCED DEPTH KEYWAY AS PER DIN 6885/2
SEE DRAWING Pag13
– WHEN ORDERING, SPECIFY: SIZE, MODEL, D DIAMETER
Pag13
EXAMPLE: 2ICCKR - D 80 DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE
21
24
27
29
34
Oil
max lt
KR CKR CCKR KR CKR CCKR
87 97 105 19 23 31
105 115 123 28,4 31,2 39
158 176 195 42 50 61
211 229 239 55 63 73
337 352 362 82,5 92,5 101

FLUID COUPLING SERIES 21 ÷ 34…KRG-…KRB-…KRBP-…KRD
Size
21•
24•
27
29
34
KRB
(with brake drum)
(Con fascia freno)
X1 X H G
H7
Dimensions
KRBP
(with (Con brake disco disc) freno)
G1
j7
KRD
Z
L
Y
Y 1
C
K
KRG
L 1
C 3
KRD
C C 1 C 2 C 3 C 4 C 5 G G 1 H K L L 1 Flex Brake Brake Z
coupling drum disc
• FOR BORES D 100 INCREASE DIMENSIONS BY 35 mm.
– G1 SHAFT WITH A KEYWAY ACCORDING TO ISO 773 - DIN 6885/1
– UPON REQUEST, G FINISHED BORE AND G1 SPECIAL SHAFT DIAMETER
Pag14
– WHEN ORDERING, SPECIFY: SIZE - MODEL - D DIAMETER FOR …KRB OR …KRBP, SPECIFY X AND Y OR X1 AND Y1 DIMENSIONS BRAKE DRUM OR DISC
EXAMPLE: 19KRBP - D80 - BRAKE DISC 450 x 30
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE
14
Weight kg
(without oil)
KRG CKRG CCKRG KRD CKRD CCKRD max X x Y X1xY1 KRG CKRG CCKRG KRD CKRD CCKRD
560 x 30
433• 533• 623• 292• 392• 482• 110 90 290 3 140 120 BT60
400 x 150 630 x 30
45
129 139 147 99,5 109,5 117,5
710 x 30
500 x 190 795 x 30
147 157 165 117,5 127,5 135,5
484
513
602
631
702
731
333
362
451
480
551
580
130 100 354 4 150 140 BT80 500 x 190
710 x 30
795 x 30 20
228
281
246
299
265
309
178
231
186
249
215
259
595 726 826 437 568 668 160 140 425 5 180 150 CT90 630 x 265 1000 x 30 50 449 464 474 358 373 383
C1
C2
KRG CKRG CKRG - CCKRG - CCKRG
NB: The arrows indicate input and output in the standard version.
C4
C5
CKRD CKRD - CCKRD - CCKRD

FLUID COUPLING SERIES 7 ÷ 34 KCM-CKCM-CCKCM
E
F
0
+0.05
A D D B
Size
H
H
C
Dimensions
F1
• INTERCHANGEABLE WITH STANDARD VERSION
– WHEN ORDERING, SPECIFY: SIZE - MODEL
EXAMPLE: 34CCKCM
E
0
+0.05
KCM CKM
CKCM CKCM - CCKCM-
CCKCM
NB: The arrows indicate input and output in the standard version.
15
C1
C2
THIS FLUID COUPLING IS FORESEEN FOR THE ASSEMBLY OF HALF GEAR COUPLINGS
A B C C1C2 D E F F1H L Weight kg
(without oil)
Gear
coupling
KCM CKCM CCKCM
Nr. Ø KCM CKCM CCKCM size
7
8
228
256
116
140
145 –
95,25 6 6,4
1/4
28
UNF
17
7,3
8,1 –
1”
S
9
11
12
13
295
325
370
398
152,5
177
186
198
208
233
265
283,5
–
122,22 8 9,57
7 6,5
3/8
24
UNF
18,5
21
14
16
21
28
18,5
24
31
–
1” 1/2
S
15 460 248 327 375 24,5 47,2 51 52,9
17
19
21
24
520
565
620
710
213
240
250
315
332
417
412
507
177,8
203,2
10
12
12,75 9,5 10
1/2
20
UNF 25,5
66,2
75
109
129
72
81
119
139
81
90
127
147
2” 1/2
S
3”
S
27
29
780
860
280
367
396
526
555
626
655
241,3
8 19,05 22 28
3/4
10 50
206
255
229
278
239
288
3” 1/2
E
34 1000 318 471 634 734 279,4
UNC
436 444 454
4”
E
SUPERSTANDARD
VERSION
C C 1 C 2
140•
145•
189
–
–
198 245
198• 265•
223,5 283,5•
251• 319 367
296 376 456
320 420 510
408 526• 626•
437 555• 655•
510 634• 734•
Gear
coupling
size
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE
1”
S
1” 1/2
S
2” 1/2
S
3” 1/2
E
4”
E

FLUID COUPLING SERIES 7 ÷ 34 KCG-CKCG-CCKCG
N
A G
G
I
C
N
M I
KCG KCG CKCG - CCKCGCKCG
- CCKCG
KCGB
(with (Con fascia brake freno) drum)
KCGBP
(Con (with disco brake freno) disc)
Brake Fascia drum o disco or freno disc a upon richiesta request
Size
•
••
Dimensions
A C C 1 C 2 G I M M 1 M 2 N
KCG CKCG CCKCG max KCG CKCG CCKCG
S = SHROUDED SCREWS
E = EXPOSED SCREWS
••• INTERCHANGEABLE WITH STANDARD VERSION
– WHEN ORDERING, SPECIFY: SIZE - MODEL
EXAMPLE: 21CKCG
16
C1
M1
M2
NB: The arrows indicate input and output in the standard version.
FLUID COUPLING FITTED WITH HALF GEAR COUPLINGS, TO BE RADIALLY
DISASSEMBLED WITHOUT MOVING THE MACHINES
Gear coupling
Size Weight Kg
228
256
295
325
370
229
234
–
278,6
287,6 334,6
299,6 366,6
–
50
65
43
49,3
143
148
180
189
201
–
236
268
–
44,5
50,8
4
8
398 309,6 385,1 211 286,5
460 407 486 534 253 332 380
520
565
409 491 571
95 77
255 337 417
79,5 23,5
620
710
502 604 694 111 91 320 422 512 93,5 35,2
780 586 745 845
134 106,5 373 532 632 7
8
9
11
12
•
1”
S
1” 1/2
S
13
•
15
17
19
2” 1/2
S
21
24
•
3”
S
27
29
34
860
1000
615
718
774
881
874
981 160 120,5
402
477
561
640
661
740
3” 1/2
109,5 E
••
4”
123,5
•• E
56,6
81,5
SUPERSTANDARD VERSION
C C 1 C 2 M M 1 M 2
229••• 143•••
234••• – 148••• –
292
–
192
–
301 348 201 248
301••• 368••• 201••• 268•••
•••
226,5 386,5
•••
226,5 286,5
410••• 478 526 256••• 324 372
453 533 613 301 381 461
479 579 669 325 425 515
627 745••• 845••• 414 532••• 632•••
656 774••• 874••• 443 561••• 661•••
757 881••• 981••• 516 640••• 740•••
Gear
coupling
size
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE
1”
S
1” 1/2
S
2” 1/2
S
3” 1/2
E
4”
E

FLUID COUPLING SERIES 9 ÷ 34 KDM-CKDM-CCKDM
A
Size
D
9
11
12
13
15
17
19
21
24
27
29
34
N
I
KDM KDM CKDM - CCKDM
CKDM - CCKDM
Dimensions
A B B 1 B 2 C C 1 C 2 D H I M M 1 M 2 N Disc
coupling
KDM CKDM CCKDM KDM CKDM CCKDM max KDM CKDM CCKDM
17
Weight kg
(without oil)
KDM CKDM CCKDM
295 177 – 278 – 180 – 20,5 –
325
186
233
– 289
336
–
55 123 50
189
–
51,5
1055 22,5 25
–
370 253 356 256 – 26 29
398 216 276 339 399 65 147 60 219 279 1065 41,3 44,3
460 246 314 362 391 459 507 75 166 70 251 319 367 72,5 1075 62,9 66,9 74,6
520
269 349 429 444 524 604 90 192 85 274 354 434 87,5 1085
88,4 94,4 103,4
565 95,4 101,4 114,4
620
315 415 505 540 640 730 115 244 110 320 420 510 112,5 110
161 171 179
710 179 189 197
780 358 476 576 644 762 862
135 300 140
364 482 582
143 1140
295 313 332
860 387 505 605 673 792 891 393 511 611 348 366 376
1000 442 573 673 768 899 999 165 340 160 448 579 679 163 1160 574 562 572
– WHEN ORDERING, SPECIFY: SIZE - MODEL
– FINISHED D BORE UPON REQUEST
EXAPLE: 27 CKDM
B
M
C
N
I
H
N
I
B1
B2
M1
M2
NB: The arrows indicate input and output in the standard version.
FLUID COUPLING FITTED WITH HALF DISC COUPLINGS, WITHOUT MAINTENANCE AND PRESCRIBED FOR PARTICULAR AMBIENT CONDITIONS. TO BE
RADIALLY DISASSEMBLED WITHOUT MOVING THE MACHINES.
C1
C2
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE
N
I

FLUID COUPLING SERIES …KDMB-…KDMBP
KDMB KDMB
(with brake drum)
Size
12
13
15
17
19
21
24
27
29
34
X1 X S
KDMBP
(with (Con brake dis disc)
KDM
Dimensions
U
Z
Y
N1
R Q
max
Y1
A B B1B2 CB CB1 CB2 D D1 I I1MB MB1 MB2 N N1P Q R S T U V Z Disc
coupling
KDM CKDM CCKDM KDM CKDM CCKDM max max std max KDM CKDM CCKDM ±0,1 f7 Nr. Ø
370 186 253
–
336,5 403,5
–
55 60 50 80 97 206,5 273,5
–
51,5 99 162 67 69 128 142 8
M8
114
–
1055
398 216 276 440,5 500,5 65 70 60 140 161 240,5 300,5 61,5 163 193 78 129 155 170 140 1065
460 246 314 362 495,5 563,5 611,5 75 80 70 150 174 275,5 343,5 391,5 72,5 177 219 98 134 175 192 157 109 1075
520
269 349 429 548,5 628,5 708,5 90 95 85 189 303,5 383,5 463,5 87,5 192 247
107
143 204 224 M10 185 118 1085
565
160
87
12
620
315 415 505 628,5 728,5 818,5 115 120 110 198 358,5 458,5 549,5 112,5 201 312
133
137 256 276 M12 234 112 1110
710 109
780 358 476 576 731,5 849,5 949,5
135 145 140 227
411,5 529,5 629,5
143 230 366
107
155 315 338 M14 286 133 1140
860 378 505 605 760,5 878,5 978,5 180 440,5 558,5 658,5 109
1000 442 573 673 845,5 976,5 1076,5 165 175 160 237 505,5 636,5 736,5 163 240 410 124 152 356 382 M16 325 130 1160
– WHEN ORDERING, SPECIFY: SIZE - MODEL
– D AND D1 FINISHED BORES UPON REQUEST
– FOR BRAKE DRUM OR DISC, SPECIFY DIMENSIONS X AND Y OR X 1 AND Y 1
EXAMPLE : 17KDMB - BRAKE DRUM 400 x 150
B
MB
CB
B1
N N1
N
B2
I
KDM
NB: The arrows indicate input and output in the standard version.
LIKE KDM, BUT FORESEEN FOR A BRAKE DRUM OR DISC ASSEMBLY
18
I1
MB1
MB2 CB1
CB2
I
CKDM - CCKDM
Size
CKDM - CCKDM
Dimensions
Brake Brake
drum disc
Weight kg
(without oil)
X x Y X1 x Y1 KDM CKDM CCKDM
160 x 60
200 x 75
on request
27
42,8
30
45,8
–
250 x 95 450 x 30 64,4 68,4 76,1
315 x 118 500 x 30 91,4 97,4 106,4
400 x 150 560 x 30 98,4 104,4 119,4
400 x 150 630 x 30 169 179 187
500 x 190 710 x 30 187 197 205
500 x 190 800 x 30
303 321 340
348 366 376
on request 800 x 30 12
13
15
17
19
21
24
27
29
34
1000 x 30
554 569 579
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE

FLUID COUPLING SERIES 9 ÷ 34 KRM - CKRM - CCKRM
Size
Dimensions
D J J 1 A B C C 1 C 2 E F G H L Q R S
KRM CKRM CCKRM
19
max
Elastic
coupling
Weight kg
(without oil)
KRM CKRM CCKRM
9
28
42
38
–
60 80
110
295 96 276 – 31
43
79
54 M 10 M 12
M 16
14,5 –
128
28 •38
60 80
42 56 M 10 M 12
11
42 48
111
110
325 107 332 27 50 185 50 M 20
83 M 16
53 F 16,5 19
–
12
42
38
•48
80
110
370 122
285
352
–
24 145
42 56
83
M 12
20 23
M16
13
42
••55
48
••60
143
110
110 58,5
398 137 332 392 28 177 65 228 72
74
84
104 M 20
55 F 33 36
48 55
110
80 70 M 16 M 20
15
60 ••65
145
140
460 151 367 435 483 35 206 70 235 80
100 M 20
56 F 48 52 59,7
17
48
60
55
••65 145
110
140 520 170 37
M 27
80
103
M16 M20
M20
67 73 82
75 80 140 170
380 460 540 225 75 288 90
105 135
58 F
48 55 110 80 M16 M20
19 60 ••65 145 140 565 190 17 103 M20 74 80 89
•••75 •••80 140 170 105 135 M20
60 65 140
520 170 37
105
67 73 82
* 75 * 80 140 170
380 460 540 225 75 288 90
60 65 140
565 190 17
*
M 27
105 135
105
M 20 58 F
74 80 89
75 * 80 140 170 105 135
* 80 90 170
– 17 D BORES RELATIVE TO TAPER BUSHES WITH A KEYWAY ACCORDING TO ISO 773 - DIN 6885/1
• CYLINDRICAL BORE WITHOUT TAPER BUSH WITH A REDUCED KEYWAY DIN 6885/2
•• TAPER BUSH WITHOUT KEYWAY
••• 19 CYLINDRICAL BORE WITHOUT TAPER BUSH
CYLINDRICAL BORE VERSION
21
620 205
496 596 686
45
130 M 20 M 24
124 134 142
❒100 210 531 631 721
250 90 378 110 M 36
165 M 24
65 F
24
*80 90
–
170
710 229
496 596 686 21 130 M 20 M 24
142 152 160
❒100 210 531 631 721 56 165 M 24
27
29
34
H
G
H7
L
C
COUPLING ALLOWING HIGHER MISALIGNMENTS AND THE REPLACEMENT OF THE ELASTIC ELEMENTS WITHOUT MOVING THE MACHINES
TAPER BUSH VERSION
120 max 210 780 278 525 643 743 6 315 100 462 122
135 max 240 860 295 577 695 795 18 350 120 530 145 M 45
150 max 265 1000 368 648 779 879 19 400 140 630 165
– D BORES WITH KEYWAYS ACCORDING TO ISO 773 - DIN 6885/1
* STANDARD DIMENSIONS
❒ REDUCED KEYWAY AS PER DIN 6885/2
– WHEN ORDERING, SPECIFY: SIZE - SERIE D DIAMETER - EXAMPLE: 13 CKRM-D 55
Q
J
E
In case of installation on shafts without
shoulders, please contact Transfluid
F A
shaft with cylindrical bore
KRM KRM
CKRM CKRM - CCKRM - CCKRM
J
D G7
NB: The arrows indicate input and output in the standard version.
C1
C2
167 M 24
(for max bore)
167 M 24
(for max bore)
200 M 36
(for max bore)
66 F 211 229 248
68 F 293 311 321
610 F 467 482 492
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE

FLUID COUPLING SERIES D34 KBM
Ø140
m6
170
140
257.5
383
FLUID COUPLING WITH DOUBLE CIRCUIT, FITTED WITH MAIN JOURNALS AND INPUT AND OUTPUT SHAFTS
WEIGHT Kg
(without oil)
SLIDING LIBERO
BLOCCATO LOCKED
KEYWAYS ACCORDING TO ISO 773 - DIN 6885/1
1400
640 377
1120
885
810 OIL
162
max. lt
20
140
257.5
NB: The arrows indicate input and output in the standard version.
Ø140
m6
Ø1000
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE

FLUID COUPLING SERIES 6 - 27 KSD - CKSD - CCKSD
Size
6
7
8
9
11
12
13
15
17
19
Dimensions
A I
S D T
B1
B2
CKSD-CCKSD
KSD
C1
C2
C
E
P L
J
R
21
D
K
J 1
M
F ±0.1
f7
taper bush
N
H
cylindrical bore
D J J 1 A B B 1 B 2 C C 1 C 2 E F G H I K L M N P Q R S T
KSD CKSD CCKSD max CKSD CCKSD Nr. Ø max
•19 •24 – 45 55 195 60 140 62 45 57 – 7 42 88 17 – – – 35
19 24
28 ••38
24
28 ••38
69
40 50
60 80
50
60 80
228
256
77
91
–
159
174
194
–
55
70
81
75 90
4 M 6
–
8
35
50
65
3
114 14
M 12
M 12 M 14
M12
M 12 M 14
29 38
43 54
33
43 54
M 6 M 8
M 10 M 12
M6 M8
M 10 M 12
50
28 38 60 80
–
39 54 M 10 M 12
•••42
110
295 96
–
250
116
78 M 16
28 38
111
60 80
96 114 85 5 128 20
38 59 M 10 M 12
69
•••42 •••48 110
325 107 73,5 259 290,5 113 8 195 M 20
78 M 16
38 42
80 110
M8 13
54 83 M 12 M 16
••48
113
110
370 122 274 327 125 112 130 98 7 145 22
83 M 16
80
42 48
110
80 224
76 M 16
•••55 •••60
144
110 58,5
398 137 367 407 190 135 155 158 6 177 29
76 106 M 20
88
48 55
110
80 70 M 16 M 20
60 •••65
145
140
460 151 92 140 390 438 486 195 150 178 259 17 159 206 28
100 M 20
100
48
60
•75
48
55
•••65
•80
55
145
110
140
140 170
110
520 170
101 181 455 516 596
245
180 200
12
M10
337 17 180
7
225
60
M27
69
99
99 139
69
M 20 132
60 •••65 140 565 190 225 45 99
•75 •80 140 170 99 139
– D BORES 60 65 RELATIVE 140 TO TAPER BUSHES WITH A KEYWAY ACCORDING TO ISO 773 - DIN 6885/1
103
– 17 PARTICULAR CASES: • CYLINDRICAL 520 170 BORE WITHOUT TAPER BUSH 245- DIN 6885
60
•75 •80 140 170
103 143
•• CYLINDRICAL BORE WITHOUT TAPER BUSH 101 181 WITH 455 A REDUCED 516 596 KEYWAY 180(DIN2006885/2) 12 - MFOR 10 7 337 AND 17 8KSD 180Q DIMENSION 225 IS M14 M 27
60 65 140
103 M 20
••• 19 TAPER BUSH WITHOUT A KEYWAY
565 190 225 45
•75 •80 140 170 CYLINDRICAL BORE VERSION
103 143
21
•80
•100
170
210
620 205
505
545
580
620
670
710
260
300
190
230
57
135
165
M 20
M 24
24
•80
•100
– 170
210
710 229
115 205
505
545
580
620
670
710
236
276
200 228 8 M 14 400 20
190
230
7 250
46
M 36
135
165
M 20
M 24
27 120 max 210 780 278 138
CONSULT OUR ENGINEERS
– ALL D BORES WITH KEYWAYS ACCORDING TO ISO 773 - DIN 6885/1
• STANDARD DIMENSIONS
– WHEN ORDERING, SPECIFY: SIZE - MODEL - D DIAMETER
EXAMPLE: 12KSD - D 42
TAPER BUSH VERSION
only for size “6”
NB: The arrows indicate input and output in the standard version.
J 1
In case of installation on shafts without
shoulders, please contact Transfluid
6
7
8
9
11
12
13
15
17
19
21
24
27
G7
Weight kg
(without oil)
KSD
3,2
CKSD CCKSD
5,9
6,5
–
13 –
15 17,5
19 22
31 34
46 50 57,5
74 80 89
82 88 97
110 120 128
127 137 145
184 202 221
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE
132
145

STANDARD PULLEYS
Size
6
7
8
9
11
12
13
...KSI
Dimensions
D U
..KSI - ..KSDFKSI
- KSDF
Integral
pulley
Dp N° type
19 - 24 24
63
80
100
80
19 - 24 11,5 90
100
80
2 - SPA/A
28 - 38 26,5 90
100
19 - 24
28 - 38
26,5
90
100
112
3 - SPA/A
28 - 38
42
10
15
34
112
125
160
5 - SPA/A
4 - SPB/B
38 - 42
48
12 140 5 - SPB/B
42 - 48
55 - 60
48 - 55
50 180
6 - SPB/B
15
50 200
3 V 10,3 8,7
60 - 65
5 V 17,5 12,7
27 120 max 17 355 12 - SPC/C
8 V 28,6 19
– WHEN ORDERING, SPECIFY: SIZE - MODEL - D DIAMETER - Dp - NUMBER AND TYPE OF GROOVES
SPZ-Z
SPA-A
SPB-B
SPC/C
EXAMPLE: 13 CKSDF - D55 - PULLEY Dp. 250 - 5 SPC/C
..CKSI - ..CKSDF
GROOVE V Z
D
22
12
15
19
25,5
37
8
10
12,5
17
24
Size
7
U
V Z
8
9
11
12
13
15
17
19
21
24
D
D p
...KSDF
..KSDF
Dimensions
D U
19 - 24 11,5
28 - 38 26,5
19 - 24
28 - 38
28 - 38
42
Flanged
pulley
Dp N° type
125
41,5 125
2 - SPA/A
58 200 3 - SPB/B
38 - 42
48
50
51
26
180
200
4 - SPB/B
3 - SPC/C
4 - SPC/C
42 - 48
55 - 60
50
49
250
6 - SPB/B
5 - SPC/C
48 - 55
60 - 65
17
250
280
5 - SPC/C
65 - 75
80
80 20
100 60
12 265 7 - SPB/B
72 315 6 - SPB/B
35 355 6 - SPC/C
355
400
8 - SPC/C
355
400
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE

FLUID COUPLINGS SERIES 6 ÷ 11 EK
Size
6
7
8
9
11
Example Esempio di of applicazione application
Dimensions
D J G L A C M N O Weight Kg OIL
(without oil) max lt
• 42
EK
(Nr.4x90˚ ) O
O(Nr.4x90˚
)
M
N
F7
G
L C
NB: The arrows indicate input and output in the standard version.
23
Electric Motors
TYPE
kW
1500 rpm
14 35 14 28
130 110 9 71 0,37
• 19
24
45
55
19
24
33
38
248 110
165 130 11
0,50
80
90 S
0,55 - 0,75
1,1
• 24 52 24 38 269 132 165 130 11
0,92
90S - 90L
*
• 28 62 28 44 299 142 215 180 13
1,5
• 38 82 38 57 399 187 265 230 13
1,95
112 42 63 399 187 300 250 17
2,75
90LL
1,1 - 1,5
1,8
100 L
112 M
2,2 - 3
4
132S - 132 M
* 132L
5,3
11,4
12,2
26,9
5,5 - 7,5
9,2
28,3
160M - 160 L 11 - 15
J
• STANDARD DIMENSIONS
* NOT STANDARD
ALL DIMENSIONS ARE WITH A KEYWAY ACCORDING TO ISO 773 - DIN 6885/1
WHEN ORDERING, SPECIFY: SIZE - MODEL - D DIAMETER
EXAMPLE: 8 EK-D 28 - G 28
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE
H7
M
A

RECOMMENDED OIL AND QUANTITY
SAFETY DEVICES
9. OIL FILL
Transfluid fluid couplings are not generally filled with oil, so
it is necessary to follow the procedure reported here below to
achieve the standard fill X for K series, fill 2 for CK series and fill
3 for CCK series:
1 - position the fluid coupling axis horizontally, turn it until the X
mark (respectively 2 or 3 according to the fluid coupling type)
cast into the housing gets at the top vertical (maximum oil fill),
so that the oil plug is inclined as shown in Fig. 5.
2 - fill with oil until it overflows out of the filler hole. While filling,
gently rock the coupling on its axis to make sure all air excess
is vented out of the circuit. The quantities to be introduced are
those reported in Tab. E.
3 - screw the cap and make sure no leakages occur; otherwise
use thread sealant on filler plug threads.
4 - the fillings marked X-1-2-3-4 may be chosen by the operators
to meet the best performance in terms of start-up and steady
running condition.
5 - for normal operating conditions, use only ISO HM 32 (or
equivalent SAE 10W).
At low ambient temperatures (near 0°C), it is recommended to
use ISO FD 10 (or equivalent SAE 5W) oil.
For temperatures below –10°C, ask Transfluid.
6 - for vertical mounted applications, the couplings recommended
oil fills are reported in Tab. E.
Size
6
7
8
9
11
12
13
15
17
19
21
24
27
29
34
D34
SERIES K
RECOMMENDED OIL: ISO 32 HM
Agip OSO 32
Aral VITAM GF 32
Bp ENERGOL HLP 32
Castrol HYSPIN AWS 32
Chevron RPM EP HYDRAULIC 32
Esso NUTO H32
Mobil DTE 24
Shell TELLUS 32
Texaco RANDO HD 32
Total AZOLLA ZS 32
Fillings
OIL QUANTITY lt
FILL X FILL 2 FILL 3
0,50
—
—
0,92
—
—
1,50
—
—
1,95
—
—
2,75
3,35
—
4,1
4,8
—
5,2
5,6
—
7,65
8,6
9,3
11,7
13,6
16,4
14,2
16,5
18,8
19
23
27,3
28,4
31,2
35,5
42
50
59,5
55
63
70,6
82,5
92,5
96,7
162
—
—
SERIES CK
SERIES CCK
24
10. SAFETY DEVICES
FUSIBLE PLUG
In case of overloads, or when slip reaches very high values, oil
temperature excessively increases, damaging oil seals and
letting oil out.
To avoid damage, for severe applications it is advisable to fit a
convenient fusible plug. Fluid couplings are supplied with a
fusible plug at 145°C (120°C, 175°C or 198°C upon request).
SWITCHING PIN
Oil leakage out of the fusible plug may be avoided with the
installation of a switching pin device. When the temperature
reaches the melting point of the fusible ring element, this
releases a pin that intercepts a relay cam, giving an alarm or
stopping the main motor supply.
As for the fusible plug, 3 different fusible rings are available (see
page 25).
ELECTRONIC OVERLOAD CONTROLLER
It consists of a proximity sensor measuring the speed variation
between input and output of the fluid coupling, giving an alarm
signal or stopping the motor in case the set threshold is
overcome.
With such a device, as well as with the infrared temperature
controller, no further maintenance or repair intervention is
necessary after the overload situation, because the machinery
can regularly go on, once the cause of the inconvenience has
been removed (see page 26).
INFRARED TEMPERATURE CONTROLLER
To measure the operating temperature, a device fitted with an
infrared sensor is available. After conveniently positioning it by
the fluid coupling, it allows a very precise non-contact
temperature measurement.
Temperature values are reported on a display that also allows the
setting of 2 alarm thresholds to be used by the customer (see
page 27).
Tab. E
Fig. 5
4 3 22
1 X
X X 11
22
33
4
13

SAFETY DEVICES
OPERATION
10.1 SWITCHING PIN DEVICE
The device includes a fusible switching pin, fitted on the fluid
coupling cover, and a relay to be positioned according to the
distances shown in Fig. 6.
The switching pin is formed by a threaded plug and a pin held in
place by a fusible ring: the pin comes out owing to centrifugal
force when the temperature set for the fusible ring melts it.
The temperature increment may depend on an overload, a jam in
the driven machine or an insufficient oil fill.
The pin, sliding about 16 mm, intercepts the cam of the relay to
give an alarm or a motor stop signal.
After a possible intervention, and after removing the cause, the
device may be easily reset by replacing the threaded plug or
even the fusible ring, following the specific instructions reported in
the installation manual.
The switching pin device is generally to be required when
ordering, as the fluid coupling cover needs a convenient
machining and balancing.
In case it needs to be fitted on a pre-existing plant which was not
equipped with it, the replacement of the whole cover fitted with a
switching pin is recommended.
To increase safety on fluid couplings, a standard fusible plug set
at a higher temperature than that of the switching pin, is always
present.
For a correct operation, see also the technical features relative to
standard or reverse mountings, reported at page 28.
Dimensions
33
Size
25
..KR - ..KCM -
..KR - ..KCM -
..KDM
..KDM
41.5
Lever switch
(protezione (IP 65 protection) IP 65)
70
Ø9
135
B
D (..KR)
50
25.5
Camma Cam
6
C (..KCM)
..KSD
11 12 13 15 17 19 21 24 27 29 34
A 165 189 203 229 260 281 307 350 377 415 478
B
C
D
E
F
40,5 45 51 55 63 70 70 102 113
187 205 282 295 360 352
Ø 80-90 Ø 100 Ø 80-90 Ø 100
395 435 395 435
155
— — —
101,5 105,5 120 135 152 144 180 180 215 182 200 232
123
114,5
127
118,5
142
136
163
155
180
173
Switching Tappo fusibile pina
percussione
172
165
18 7.5
16.5
208
204
208
204
Fig. 6
MELTING TEMPERATURE
120˚ C
145˚ C
175
229
208
SPEC.
SPEC.
SPEC.
247
226
284
259
A
..KR - ..KCM - ..KSD
16.5
1004-A
1004-B
1004-C
+ 10˚ C
0
DIMENSIONS ARE SUBJECT TO ALTERATION WITHOUT NOTICE

SAFETY DEVICES
OPERATION
10.2 OVERLOAD CONTROLLER
When load torque increases, slip also increases and output
speed consequently decreases.
The said speed variation can be measured by means of a sensor
sending a pulse train to the speed controller. If the rotating speed
goes lower than the set threshold (see diagram) on the controller,
a signal is given through the intervention of the inner relay.
The device has got a “TC” timer with a blind time before starting
(1 - 120 s) avoiding the alarm intervention during the starting
phase, and another “T” timer (1 – 30 s) preventing from
undesired relay intervention during sudden changes of torque.
The device also provides a speed proportional analogic output
signal (0 – 10 V), to be forwarded to a display or a signal
transducer (4 – 20 mA).
Standard supply is 230 V ac, other supplies are available upon
request: 115 V ac, 24 V ac or 24 V dc, to be specified with the
order.
CONTROLLER PANEL (Fig. 8)
TC Blind time for starting
Set screw regulation up to 120 s.
DS Speed range regulation
Programmable DIP-SWITCH (5 positions), selecting relay status,
proximity type, reset system, acceleration or deceleration.
Programming speed Dip-Switch with 8 positions allows to choose
the most suitable speed range, according to the application being
performed.
SV Speed level (set point)
Set screw regulation with digits from 0 to 10. The value 10
corresponds to full range set with Dip-Switch.
R Reset
Local manual reset is possible through R button, or remote reset
by connecting a N.O. contact at pins 2-13.
SS Threshold overtaking
(RED LED) It lights up every time that the set threshold (set
point) is overtaken.
A Alarm led
(RED LED) It lights up when alarm is ON and the inner relay is
closed.
E Enable
(YELLOW LED) It lights up when the device is enabled.
T Delay time
Set screw regulation up to 30 s.
ON Supply
(GREEN LED) It shows that the device is electrically supplied.
FOR FURTHER DETAILS, ASK FOR TF 5800-B.
26
SPEED
RELAY
START-UP
Fig. 7
OPERATION
Diagram
Fig. 8
OVERLOAD
1490
1490
RPM
RPM
LED TIME

SAFETY DEVICES
OPERATION
10.3 INFRARED TEMPERATURE CONTROLLER
This is a non contacting system to check fluid coupling
temperature. It is reliable and easy-mounting.
It has 2 adjustable thresholds with a logical alarm on the former,
and a relay alarm on the latter.
The proximity sensor must be positioned near the fluid coupling
outer impeller or cover, according to one of the layouts shown in
Fig. 9.
It is adviced to place it in A or C positions, as the air flow
generated by the fluid coupling during rotation helps to remove
possible dirt particles that may lay on the sensor lens.
The distance between the sensor and the fluid coupling must be
about 15-20 mm (cooling fins do not disturb the correct operation
of the same sensor).
To avoid the bright surface of the fluid coupling to reflect light,
and thus compromise a correct temperature reading, it is
necessary to paint the surface which is directly facing the sensor
of a flat black colour (a stripe of 6-7 cm is sufficient).
The sensor cable has a standard length of 90 cm. In case of
need, a longer one may be used only if plaited and shielded as
per type “K” thermocouples.
SENSOR
Temperature range 0 ÷ 200 °C
Ambient temperature -18 ÷ 70 °C
Accuracy 0.0001 °C
Dimensions 32.5 x 20 mm
Standard wire length • 0,9 m
Body ABS
Protection IP 65
CONTROLLER
Power supply 85…264 Vac / 48…63 Hz
Relay output OP1 NO (2A – 250V)
Logical output OP2 Not insulated
(5Vdc, ±10%, 30 mA max)
AL1 alarm (display) Logic (OP2)
AL2 alarm (display) Relay (OP1) (NO, 2A / 250Vac)
Pins protection IP 20
Body protection IP 30
Display
protection
IP 65
Dimensions 1/32 DIN – 48x24x120 mm
Weight 100 gr
27
1
2
AT
Filettatura Thread
• TO BE MADE LONGER WITH TWISTED AND SHIELDED WIRES FOR TYPE K THERMOCOUPLES (NOT SUPPLIED)
120
B
SENSOR SENSORE
25
2
Fig. 9
FIG. 9
Ch.23.7
DIN PG PG11 11
5.6
5.6
1.5 6.4
34
Spessore Max panel pannello thickness max. 20 20 mm
mm
DISPLAY
48

STANDARD OR REVERSE MOUNTING
11. INSTALLATION
11.1 STANDARD MOUNTING
Driver inner impeller
Minimum possible inertia is added to the motor, that is therefore
free to accelerate more quickly.
During the starting phase, the outer impeller gradually reaches
the steady running condition. For very long starting times, heat
dissipation capacity is lower.
If a braking system is required, it is convenient and easy to
install a brake drum or disc on the flex coupling.
For the very few cases in which the driven machine cannot be
rotated by hand, maintenance procedures of oil checking and
refilling, as well as alignment, become more difficult.
The delayed fill chamber, when present, is fitted on the driven
side. The rotating speed of the said chamber gradually increases
during start-up, thus leading to a longer starting time, given the
bleed orifices diameters are not changed. If oil quantity is
excessively reduced, the transmissible torque may be lower
than the starting torque of the driven machine. In such a case,
part of the oil remains inside the delayed chamber. This lack of oil
in the fluid coupling may prevent starting the fluid coupling up.
The “switching pin” device might not work correctly on
machines where, owing to irregular operating conditions, the
driven side may suddenly stop, or jam during the starting phase.
Flex coupling is protected by the presence of the fluid coupling in
front of it, and therefore this configuration is fit for applications
with frequent start-ups or inversions of the rotating sense.
28
11.2 REVERSE MOUNTING
Driver outer impeller
Higher inertia directly connected to the motor.
The outer impeller, being directly connected to the motor,
reaches synchronous speed at once. Ventilation is therefore
maximum from the beginning.
The assembly of a brake disc or drum on KR fluid couplings is
more difficult and expensive, and leads to a longer axial
dimension of the whole machine group.
The outer impeller and cover are connected to the motor, it is
therefore possible to manually rotate the coupling to check
alignment and oil level, and for refilling.
The delayed fill chamber is fitted on the driver side, and reaches
the synchronous speed in a few seconds.
Oil is therefore centrifuged into the main circuit gradually and
completely.
Starting time is adjustable by replacing the calibrated bleed
orifices.
The starting phase, however requires a shorter time than that
needed in the configuration with an inner driver impeller.
The switching pin operation is always assured, as the outer
impeller, where fitted, always rotates because it mounted on the
driver shaft.
In case of frequent start-ups or inversions of the rotating sense,
the flex coupling is much more stressed.
If not expressely required by the customer or needed for the application being performed, the fluid coupling is supplied according to
our “standard” mounting. Do specify in your quotation request whether you need a “reverse” mounting.
NOTE: Starting from size 13 included, a baffle ring is always fitted on the driver impeller, and therefore it is not recommended to
“reverse” mount a fluid coupling foreseen with a “standard” mounting, and viceversa.
In these cases contact Transfluid for more detailed information.

APPLICATIONS
12. FIELDS OF APPLICATION
• MISCELLANEOUS
- Centrifugal fans
- Centrifugal and reciprocating compressors
- Belt and bucket conveyors
- Chain conveyors
- Bridge cranes (traslation and rotation)
- Rotating jib cranes
- Winders
- Winches
- Ski lifts
- Merry-go-round, thrill rides
- Mine car haulage
• BUILDING MACHINERY
- Tower cranes (translation and rotation)
- Screw and slat conveyors
• MACHINES FOR QUARRIES
- Crushers
- Ball, barrel and hammer mills
- Bucket excavators
- Screening drums
• MACHINES FOR CONCRETE
- Mixers
- Rotating furnaces
• MACHINES FOR CERAMIC INDUSTRY
- Continuous and non continuous ball mills
- Mixers
- Presses
• BRICK MACHINES
- Clod crushers
- Crushing mills
- Rolling mills
- Brick-molding machines
• MACHINES FOR STONE CUTTING AND FINISHING
- Frame cranes
- Stone cutting machines
29
• TEXTILE MACHINES
- Barrels for tannery
- Centrifuges
- Carding machines
- Washing machines
• WOOD WORKING MACHINES
- Debarking drums
- Plywood pressing machines
- Chipping machines
• BITUMINOUS ROAD MIX MACHINES
• MACHINES FOR WASTE DISPOSAL
- Grinders
- Water depurators
• CHEMICAL, FOOD AND BOTTLING MACHINERY
- Centrifugal agitators
- Centrifugal idroextractors
- Rotating filters
- Soap cutters
- Rubber calenders and mixers
- Pallettizers
- Labeling machines
• MECHANICAL AND AUTOMOTIVE INDUSTRY
- Balancing machines
- Gate closing control drives
• METAL WORKING MACHINES
- Machines to twist ropes and wires
- Bar-straightening machines
- Presses
- Forming machines
- Wiredrawing machines
• PAPER MACHINERY
- Paper winding drums
- Pulpers

OTHER TRANSFLUID PRODUCTS
FLUID COUPLING
KSL SERIES
Start up and variable
speed drive up to 4000 kW
FLUID COUPLING
K SERIES
For diesel engines
Up to 1300 kW
ELASTIC COUPLING
HRC SERIES
Up to 3150 Nm
FLUID COUPLING
KPT SERIES
Start up and variable
speed drive up to 1700 kW
HYDRAULIC CLUTCH
HYDRAULIC BRAKE
SHC-SL SERIES
Up to 2500 Nm
Up to 9000 Nm
POWER SHIFT TRANSMISSION
With torque converter
one or more gears
manual or electric selector
up to 75 kW
30
FLUID COUPLING
KPTO SERIES
For internal combustion engines
P.T.O. for pulley and cardan shaft
up to 1700 kW
BARREL COUPLING
ROLGEAR
Up to 5000000 Nm
ELASTIC COUPLING
RBD SERIES
For internal combustion engines
up to 10000 Nm

SALES NETWORK
EUROPE
AUSTRIA
BENZLER ANTRIEBSTECHNIK GMBH
4050 Traun
BELGIUM
N.V. ESCO TRANSMISSIONS S.A.
1831 Diegem
DENMARK
NOMO TRANSMISSIONER
2765 Smoerun
DENMARK (Diesel appl.)
TRANSFLUID s.r.l.
20016 Pero (MI)
ENGLAND & IRELAND
BIBBY TRANSMISSIONS LTD
Dewsbury West Yorkshire wf13 1eh
ENGLAND & IRELAND (Diesel appl.)
MARINE AND INDUSTRIAL TRANS. LTD.
Queenborough Kent me115al
FINLAND
OY BENZLER AB
02211 Espoo 21
FRANCE
▲ TRANSFLUID FRANCE SARL
38500 Voiron
Tel.: 4.76919242
Fax: 4.76919242
GERMANY
EUGEN SCHMIDT UND CO
53842 Troisdorf
HOLLAND
BENZLER TBA B.V.
05902 RH Venlo
HOLLAND (Diesel appl.)
ESCO AANDRIJVINGEN B.V.
2404 HM Alphen a/d Rijn
HUNGARY
AGISYS
H1116 Budapest
NORWAY
TRANSFLUID s.r.l.
20016 Pero (MI)
PORTUGAL
TRANSMICEM LDA
2735-469 Cacem
SLOVENIJA
NOVI STROJI
3210 Slovenske Konjice
▲ BRANCH OFFICE
SPAIN
TECNOTRANS SABRE S.A.
08040 Barcelona
SWEDEN
JENS S. TRANSMISSIONER AB
SE-601-19 Norrkoping
SWEDEN (Diesel appl.)
M-TECH TRANSMISSIONS AB
61531 Valdemarsvik
SWITZERLAND
WHG ANTRIEBSTECHNIK AG
CH-5037 Muhen
TURKEY
REMAS
81700 Tuzla Istanbul
AMERICA
ARGENTINA
TRANSFLUID s.r.l.
20016 Pero (MI)
BRAZIL & CHILE
PANA AMERICAN
Sao Paulo
MEXICO
A.A.R.I., S.A. de C.V.
11500 Mexico df
PERU’
IMINTESA
Lima
U.S.A. & CANADA
KRAFT POWER CORP.
Lawrenceville GA 30043
▲ U.S.A. & CANADA & MEXICO
TRANSFLUID LLC
Medinah, IL 60157
Tel.: 708.4889442
Fax: 708.4889446
AFRICA
EGYPT
INTERN. FOR TRADING & AGENCY (ITACO)
Nasr City (Cairo)
MAROCCO
SOGERIC
Casablanca
SOUTH AFRICA
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Atlasville Boksburg 1465
SOUTH AFRICA (Diesel applic.)
TRANSFLUID s.r.l.
20016 Pero (MI)
LOCAL DISTRIBUTOR
OCEANIA
AUSTRALIA
MOTION INDUSTRIES
Wetherill Park Nsw 2164
AUSTRALIA (Diesel applic.)
TWIN DISC PACIFIC PTY LTD
Virginia Dc Qld 4014
NEW ZEALAND
PAYKEL ENG. SUPPLIES
Auckiand
TRANSFLUID s.r.l. ■ Via V. Monti, 19 ■ 20016 Pero (Milano) Italy ■ Tel. +39-02.339315.1 ■ Fax +39-02.33910699 ■ e-mail: info@transfluid.it ■ www.transfluid.it
0203 bulletin 145 GB
ASIA
ASIA South East
BENZLER (F.E.) PTE LTD.
Singapore 129808
ASIA South East (Diesel appl.)
TWIN DISC FAR EAST - LTD
Singapore 9161
CHINA
▲
TRANSFLUID srl
Beijing Representative Office
Tel.:10.62381099
Fax 10.62381090
INDIA
PROTOS ENGINEERING CO. PRIVATE LTD
Chennai 600002
IRAN
LEBON CO.
Tehran 15166
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ELRAM ENGINEERING LTD.
Emek Hefer
JAPAN
ASAHI SEIKO CO. LTD.
Osaka 593
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Pusan - South Korea
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Taipei
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SYSTEM CORP. LTD.
Bangkok 10140