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roller bearing

noun, Machinery.
1.
a bearing consisting of cylindrical or tapered rollers running between races in two concentric rings, one of which is mounted on a rotating or oscillating part, as a shaft.
Origin of roller bearing
1855-1860
First recorded in 1855-60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for roller bearing

roller bearing

noun
1.
a bearing in which a shaft runs on a number of hardened-steel rollers held within a cage
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
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