ball bearing

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ball bearing:

see bearingbearing,
machine part designed to reduce friction between moving parts or to support moving loads. There are two main kinds of bearings: the antifriction type, such as the roller bearing and the ball bearing, operating on the principle of rolling friction; and the plain, or
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.

ball bearing

[‚bȯl ′ber·iŋ]
(mechanical engineering)
An antifriction bearing permitting free motion between moving and fixed parts by means of balls confined between outer and inner rings.

ball bearing

1. a bearing consisting of a number of hard steel balls rolling between a metal sleeve fitted over the rotating shaft and an outer sleeve held in the bearing housing, so reducing friction between moving parts while providing support for the shaft
2. a metal ball, esp one used in such a bearing
References in periodicals archive ?
* Extreme corrosion or wear in the ball grooves of either the ball nut or ballscrew shaft, or extreme corrosion of the bearing balls, or all of those.
The ball groove geometry, deflector cross section, and material are all designed to maximize load capacity in the event that all bearing balls are lost and the deflectors engage the screw shaft in Acme fashion -- thread to thread.
Because the PM process yields ball blanks that have isotropic mechanical properties, high-quality bearing balls can be readily produced.
Capital Investigation Department of Police has arrested three suspected militants and recovered heavy explosive material, detonators, bearing balls and detonator wires from them, senior police officer told media.
NRS assemblies feature nuts with threaded rollers instead of bearing balls as rolling elements.
Recirculating bearing balls increases efficiency and allows for unrestricted travel.