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Identify Your Chain

 
The following reference topics should help you identify the most common ASME/ANSI and British Standard roller chains. We recommend using verniers or calipers for the most accurate measurements. We do not gurantee the accuracy of this information and in no way is it a recommendation for the suitability in any application.
 

Dimensions 

 

P = PITCH (Pin Center to Center)

W = INSIDE WIDTH (Between Plates)

R = ROLLER DIAMETER

 
ASME/ASNI or ISO Chain NoPitch P (in)Inside Width W (in)Roller Dia R (in)
251/40.1250.130
353/80.1880.200
06b3/80.2250.250
411/20.2500.306
08b1/20.3050.335
401/20.3120.312
505/80.3750.400
10B5/80.3800.400
12B3/40.4600.475
603/40.5000.469
8010.6250.625
16B10.6700.625
1001-1/40.7500.750
20B1-1/40.7700.750
1201-1/21.0000.875
24B1-1/21.0001.000
1401-3/41.0001.000
28B1-3/41.2201.100
32B21.2201.150
16021.2501.125
1802-1/41.4061.406
2002-1/21.5001.562
24031.8751.875