Definitions for ball bearing

This page provides all possible meanings and translations of the word ball bearing

Random House Webster's College Dictionary

ball′ bear′ing(n.)

  1. a bearing consisting of a number of hard balls running in grooves in the surfaces of two concentric rings, one of which is mounted on a rotating or oscillating shaft.

    Category: Machinery

  2. a ball so used.

    Category: Machinery

Princeton's WordNet

  1. ball bearing, needle bearing, roller bearing(noun)

    bearings containing small metal balls


  1. ball bearing(Noun)

    In engineering, a bearing assembly which uses spherical bearing balls as the rolling elements

  2. ball bearing(Noun)

    In common usage, an individual spherical ball, usually made of steel or other hard material, suitable for use in a ball-based rolling element bearing


  1. Ball bearing

    A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls. In most applications, one race is stationary and the other is attached to the rotating assembly. As one of the bearing races rotates it causes the balls to rotate as well. Because the balls are rolling they have a much lower coefficient of friction than if two flat surfaces were sliding against each other. Ball bearings tend to have lower load capacity for their size than other kinds of rolling-element bearings due to the smaller contact area between the balls and races. However, they can tolerate some misalignment of the inner and outer races.


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