ball bearing

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Related to Ball-bearing: radial bearing

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Police recovered the ball-bearing from inside the house.
``About six weeks ago we had a similar incident and then a steel ball-bearing went through a window and through a wooden shutter as well.''
Police have confirmed a big crackdown on West Yorkshire's streets on weapons - including air pistols and ball-bearing guns.
Police at Little Park Street police station were handed the ball-bearing gun yesterday.
Mr David Travers, prosecuting, told Coventry Magistrates' Court yesterday that a customer, Taj Sandhu, aged 25, from Coventry, only discovered the ball-bearing while eating a mouthful of ice cream.
POLICE today gave parents some stern advice: Do not let your children have ball-bearing guns this Christmas.
Police are now urging parents to make sure their children are not playing with ball-bearing guns.
Warwickshire police spokeswoman Di Houlder said a ball-bearing gun looked just like a real weapon.
A booby-trapped motorcycle loaded with nails and ball-bearings went off in a crowded bazaar Friday in Baghdad, killing at least 13 people and injuring dozens, Iraqi officials said.
"But if people are firing ball-bearings at cars on the M62 the potential for such stupidity to cause an incredibly serious collision on such a busy road is obvious.
One recent example: when Chrysler added a performance version of its PT Cruiser, it found that its ball-bearings couldn't handle the added strain, so it turned to Timken with a quick development request.
Tolerating up to 1,500 psi, the expanded series of 148 bonded Frelon-lined anodized aluminum bearings carry between 4 and 8x the load of ball-bearings, while lasting on average 4-8 times longer than ball-bearings.