Short pitch Transmission precision roller chains (B series):
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28B
General Dimensions
(Unit):mm
ISO Chain
NO.
ANSI Chain
NO.
Pitch
Bush Diameter
max
Width Between Inner Plates
min
Pin Diameter
max
Plate Thickness
max
Inner
Plate Depth
max
Outer
Plate Depth max
P
Dr
W
D
T1
T2
H
h
28B
28B
44.45
27.94
30.99
15.90
6.30
7.50
37.08
37.08
Dimensions of strands
Chain
NO.
Pin Length
Transverse Pitch
Average
Tensile Strength
Tensile
Strength
min
Weigtht
Per
Meter
L
max
Lc
max
L1
max
L2
max
L3
max
C
KN
KN
Kg/m
28B-1
65.10
70.00
32.55
37.45
74.60
59.56
223.60
200.00
9.60
28B-2
124.70
129.57
62.35
67.22
136.97
407.50
360.00
18.90
28B-3
184.30
189.17
92.15
97.02
196.57
610.00
530.00
28.36
