ball bearing

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See also: ballbearing


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A ball bearing



ball bearing (plural ball bearings)

  1. (engineering) A bearing assembly which uses spherical bearing balls as the rolling elements.
  2. (loosely, often) An individual spherical ball, usually made of steel or other hard material, suitable for use in a ball-based rolling element bearing. In precise usage, each such ball is called a bearing ball or simply ball, and the entire bearing is called the ball bearing.

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