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roller chain

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noun
  1. a power chain consisting of parallel pairs of flat links joined by pins covered with rollers, and engaging with the teeth of sprockets.
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Origin of roller chain

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for roller chain

roller chain

noun
  1. engineering a chain for transmitting power in which each link consists of two free-moving rollers held in position by pins connected to sideplates
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012