ball bearing

noun Machinery.

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.

any of the balls so used.

Origin of ball bearing

First recorded in 1880–85

OTHER WORDS FROM ball bearing

ball-bearing, adjective

Words nearby ball bearing

ballas, ballast, ballast line, ballast pocket, ballata, ball bearing, ball boy, ballbreaker, ball-buster, ball-carrier, ball clay

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ball bearing

The rollers should be four inches or more in diameter and should preferably be of the ball-bearing type.
The Automobile Storage Battery|O. A. Witte
A sectional view of a ball-bearing ratchet free-wheel, with outer cover removed, is shown in fig. 11.
Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7|Various
It should be a good machine having hard rubber rollers, ball-bearing action, and strong springs at the side.
Foods and Household Management|Helen Kinne
A unique advantage of the Howard-Smith machine is that it is ball-bearing throughout.
Leather|K. J. Adcock

And, what's more, by the time vacation comes I'll have the finest pair of ball-bearing skates in town!
The Rosie World|Parker Fillmore

British Dictionary definitions for ball bearing

ball bearing

noun

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

a metal ball, esp one used in such a bearing

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for ball bearing

ball bearing

A ring-shaped track containing hard metal balls that roll freely, used to reduce friction where a rotating element (such as an axle) is attached to a fixed point.

A hard ball used in such a track.

单词	ball bearing
释义	ball bearing noun Machinery. 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. any of the balls so used. Origin of ball bearing First recorded in 1880–85 OTHER WORDS FROM ball bearing ball-bearing, adjective Words nearby ball bearing ballas, ballast, ballast line, ballast pocket, ballata, ball bearing, ball boy, ballbreaker, ball-buster, ball-carrier, ball clay Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for ball bearing The rollers should be four inches or more in diameter and should preferably be of the ball-bearing type. The Automobile Storage Battery\|O. A. Witte A sectional view of a ball-bearing ratchet free-wheel, with outer cover removed, is shown in fig. 11. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7\|Various It should be a good machine having hard rubber rollers, ball-bearing action, and strong springs at the side. Foods and Household Management\|Helen Kinne A unique advantage of the Howard-Smith machine is that it is ball-bearing throughout. Leather\|K. J. Adcock And, what's more, by the time vacation comes I'll have the finest pair of ball-bearing skates in town! The Rosie World\|Parker Fillmore British Dictionary definitions for ball bearing ball bearing noun 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 a metal ball, esp one used in such a bearing Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for ball bearing ball bearing A ring-shaped track containing hard metal balls that roll freely, used to reduce friction where a rotating element (such as an axle) is attached to a fixed point. A hard ball used in such a track. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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