Chains

Sprockets
www.bergab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 223-3071
for Series 820, 831, 820 Vacuum, HFP 820, XLBP 831
NS 820
Split Thermoplastic (NS) Sprockets
Important: cannot be
used with chain 831
L
Ln
– 0,05
– 0,1
d1
ø 60
da
Rexnord
Order No.
Bore (mm)
NS 820 T21 R...
NS 820 T23 R...
NS 820 T25 R...
Bore (inch)
NS 820 T21 R...
NS 820 T23 R...
NS 820 T25 R...
Actual Effective
21
23
25
21
23
25
No of
Teeth
10,5
11,5
12,5
10,5
11,5
12,5
Pitch
Dia.
d
mm
129,26
141,22
153,21
129,26
141,22
153,21
Material: sprocket in reinforced polyamide (black).
Bolts in stainless steel AISI 304, nuts in
nickel plated brass.
Outside
Dia.
da
mm
129,5
142
154,2
129,5
142
154,2
Finished Bore
with Keyway
d1
25 30 35 40 45
25 30 35 40 45
25 30 35 40 45
1" 11/4" 2"
1" 11/4" 2"
1" 11/4" 2"
L
mm
52
52
54
52
52
54
Ln
mm
51
51
58,5
51
51
58,5
Weight
kg
0,46
0,54
0,63
0,46
0,54
0,63
Keyway: UNI 6604-69. See page 101.
Max recommended tightening torque: 1 kgm.
NS 831
Split Thermoplastic (NS) Sprockets
KUS 820
42,9
Ln
40
– 0,05
– 0,1
– 0,05
– 0,1
d1
ø 60
da
d1
da
Rexnord
Order No.
Bore (mm)
NS 831 T21 R...*
NS 831 T23 R...
NS 831 T25 R...*
Bore (inch)
NS 831 T21 R...
NS 831 T23 R...
NS 831 T25 R...
Rexnord
Order No.
KUS 820 T19 R...*
KUS 820 T21 R...*
KUS 820 T23 R...*
KUS 820 T25 R...*
KUS 820 T27 R...*
21
23
25
21
23
25
Actual
19
21
23
25
27
No of
Teeth
Actual Effective
10,5
11,5
12,5
10,5
11,5
12,5
No of
Teeth
Effective
9,5
10,5
11,5
12,5
13,5
Pitch
Dia.
d
mm
129,26
141,22
153,21
129,26
141,22
153,21
Pitch
Dia.
d
mm
117,35
129,26
141,22
153,21
165,21
Outside
Dia.
da
mm
129,5
142
154,2
129,5
142
154,2
* = Available upon request and minimum order quantity.
Material: sprocket in reinforced polyamide (black).
Bolts in stainless steel AISI 304, nuts in
nickel plated brass.
Split Thermoplastic (KUS) Sprockets
* = Available upon request and minimum
order quantity.
• = Plain Bore. Without keyway. Tolerance d1 =
Material: sprocket in polyamide (black).
Bolts and nuts in stainless steel AISI 304.
+ 0,3
0
Outside
Dia.
da
mm
117
129,5
142
154,2
166
Finished Bore
with Keyway
d1
25 30 35 40 45
25 30 35 40 45
25 30 35 40 45
1" 11/4" 2"
1" 11/4" 2"
1" 11/4" 2"
Ln
mm
51
51
58,5
51
51
58,5
Finished Bore
with Keyway
d1
mm
20• 30 35 40
20• 30 35 40
20• 30 35 40
20• 30 35 40 50 60
20• 30 35 40
Weight
kg
0,46
0,54
0,63
0,46
0,54
0,63
Keyway: UNI 6604-69. See page 101.
Max recommended tightening torque: 1 kgm.
Weight
kg
0,40
0,50
0,60
0,74
0,88
Keyway: UNI 6604-69. See page 101.
Max recommended tightening torque: 1 kgm.
Half-section fixing nuts (self-locking).
N 820
Thermoplastic (N) Sprockets
Important: cannot be
used with chain 831
L
Ln
M8x6
+ 0,07
+ 0,02
d1
dn
da
Rexnord
Order No.
N 820 T15 R...*
N 820 T17 R...*
N 820 T19 R...*
Actual
15
17
19
No of
Teeth
Effective
7,5
8,5
9,5
Pitch
Dia.
d
mm
93,67
105,48
117,35
Outside
Dia.
da
mm
92,2
104,7
117,1
* = Available upon request and minimum order quantity.
Material: sprocket in reinforced polyamide (black).
Keyway: UNI 6604-69. See page 101.
Finished Bore
with Keyway
d1
mm
25 30
25 30
20 25 30 35 40
dn
mm
43
43
60
L
mm
50
51
50
Ln
mm
50
48
50
Weight
kg
0,18
0,22
0,35
KU 820
40
d1
da
Thermoplastic (KU) Sprockets
Rexnord
Order No.
KU 820 T19 R20*
KU 820 T21 R20
KU 820 T23 R20*
KU 820 T25 R20
KU 820 T27 R20*
Actual
19
21
23
25
27
* = Available upon request and minimum order quantity.
Material: polyamide (black)
Example of codenumber : NS 820 T25 R 35 (including bore)
www.bergab.ru Берг АБ bergab@ya.ru Тел. 70 (495)-228-06-21, факс (495) 223-3071
No. of
Teeth
Effective
9,5
10,5
11,5
12,5
13,5
Pitch
Dia.
d
mm
117,35
129,26
141,22
153,21
165,21
Outside
Dia.
da
mm
117
129
142
154
166
Plain
Bore
B
mm
20
20
20
20
20
Max.
Bore
mm
60
67
75
80
85
Weight
kg
0,40
0,50
0,61
0,74
0,88