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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 sorts of back links employed alternately to make it function. Inner be part of (also known as roller be a part of): The two inner plates are joined together by two sleeves or bushings under the two rollers. Outer ring (also named pin ring): The two outer plates are pinned jointly, by means of the bushing of the internal ring.

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