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Meaning of roller bearing

roll'er bear"ing

Pronunciation: [key]
— Mach. Mach.
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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