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The roller chain operates on rotating sprockets connected to the motor that drives the chain. In most roller chains, there are two types of links utilized alternately to make it work. Inner be a part of (also known as roller join): The two inner 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 together, by means of the bushing of the inner ring.

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