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The roller chain runs on rotating sprockets connected to the motor that drives the chain. In most roller chains, there are two types of back links utilized alternately to make it perform. Interior be part of (also called roller join): The two internal plates are joined together by two sleeves or bushings beneath the two rollers. Outer ring (also known as pin ring): The two outer plates are pinned collectively, by way of the bushing of the internal ring.

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