roller bearing


: a bearing in which the journal rotates in peripheral contact with a number of rollers usually contained in a cage

Illustration of roller bearing

Illustration of roller bearing
  • 1 outer race
  • 2 cage
  • 3 roller
  • 4 inner race

Examples of roller bearing in a Sentence

Recent Examples on the Web Reel specs generally list the number of ball bearings plus one roller bearing for the anti-reverse clutch. Morgan Lyle, Field & Stream, 4 May 2023 Note tension spring and roller bearing arm at top. Lee Hutchinson, Ars Technica, 14 Apr. 2022 Detail view of the cam and roller bearing assembly. Lee Hutchinson, Ars Technica, 14 Apr. 2022 Dorella was the one who kept the family going, working up to 12 hours a day at the Mac factory, assembling hulking mechanical toolboxes, fitting each roller bearing and drawer just so. Chris Ballard,, 2 May 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'roller bearing.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1857, in the meaning defined above

Time Traveler
The first known use of roller bearing was in 1857

Dictionary Entries Near roller bearing

Cite this Entry

“Roller bearing.” Dictionary, Merriam-Webster, Accessed 29 May. 2024.

Kids Definition

roller bearing

: a bearing in which a rotating part turns on rollers held in a circular frame or cage

More from Merriam-Webster on roller bearing

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