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.
One recent design consisted of a double-start ball thread with two circuits of bearing balls in each ball thread.
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.
To reduce sliding friction between the bearing balls and planet carrier bolts the rolling or sliding bearings are applied.
Recirculating bearing balls increases efficiency and allows for unrestricted travel.
Ellingson started investigating the structure of ceramic bearing balls using lasers, with funding from the U.
He noted that the top few hundred microns of bearing balls are important because this is where most of the load is distributed.
He said that one attractive feature of ceramic bearing balls is that they run with minimal lubricants for long periods compared with their steel counterparts.