ball bearing

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

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  • ball bearing — ball bearing, adj. Mach. 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 or the like. 2. any of the balls so used. [1880 85]… …   Universalium

  • ball bearing — ► NOUN 1) a bearing in which the parts are separated by a ring of small metal balls which reduce friction. 2) a ball used in such a bearing …   English terms dictionary

  • ball bearing — ball bearings also ball bearing N COUNT Ball bearings are small metal balls placed between the moving parts of a machine to make the parts move smoothly …   English dictionary

  • ball bearing — n. 1. a bearing in which the moving parts revolve or slide on freely rolling metal balls so that friction is reduced 2. any of such metal balls …   English World dictionary

  • ball bearing — n 1.) small metal balls that move in a ring, to make a part inside a machine turn more easily 2.) one of these metal balls …   Dictionary of contemporary English

  • ball bearing — ball ,bearing noun count one of several small hard metal balls that are used between moving parts of a machine to help the parts move smoothly …   Usage of the words and phrases in modern English

  • Ball bearing — For individual balls that are sometimes called ball bearings , see Ball (bearing). Working principle for a ball bearing …   Wikipedia

  • ball bearing — noun bearings containing small metal balls • Syn: ↑needle bearing, ↑roller bearing • Hypernyms: ↑bearing * * * noun, pl ⋯ ings [count] 1 : a part of a machine in which another part (such as a metal pole) turns easily ◇ A ball bearing is made up… …   Useful english dictionary

  • ball bearing — UK / US noun [countable] Word forms ball bearing : singular ball bearing plural ball bearings one of several small hard metal balls that are used between moving parts of a machine to help the parts move smoothly …   English dictionary

  • ball-bearing — see ball bearing …   English dictionary

  • ball-bearing —    a term of male abuse    Perhaps another way of saying pillock, which is noted under pill1:     Terrible as that little ball bearing is, he is less dangerous for us than Herbert Morrison. (Crossman, 1981) …   How not to say what you mean: A dictionary of euphemisms

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