OCM
Construction of Roller Chain
Roller chain is made up of roller links and pin links. Roller links consist of two bushings press-fitted
into roller link plates with two free rotating rollers over the bushings. Pin links consist of two pin link
plates into which two pins are press-fitted.
The are two types of pins. Rivet and cotter types. ANSI 80 and below are rivet, and ANSI 100 and above are
cotter as standard.
ROLLER CHAIN CONNECTION
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CONNECTING LINKS
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Spring Clip Type
This is standard for all single and multiple strand ANSI standard chain
from 80 and below and British standard chain from 16B and below.
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Offset Link
An offset link is a combination of a roller link and a pin link. This link is used where the chain
length is an odd number of pitches. It is recommended not to use an offset link whenever possible.
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Cotter type
This is standard for all single and multiple strand ANSI 100 and above, and British standard 20B and above.
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Two Pitch Offset Link
The unit consists of one offset and one roller link. Pins are press fitted into the link plates and the unit is more
suitable for heavy impact load and high speed driving than one pitch offset link.
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Features of OCM Roller Chain
