ball bearing

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ball bearing

n. Abbr. bb
1. A friction-reducing bearing consisting essentially of a ring-shaped track containing freely revolving hard metal balls against which a rotating shaft or other part turns.
2. A hard ball used in such a bearing.

ball bearing

n
1. (Mechanical Engineering) 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. (Mechanical Engineering) a metal ball, esp one used in such a bearing

ball′ bear′ing


n.
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.
2. a ball so used.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ball bearing - bearings containing small metal ballsball bearing - bearings containing small metal balls
bearing - a rotating support placed between moving parts to allow them to move easily
References in periodicals archive ?
With a bit of care and insider knowledge, that is, knowledge of the size and shape of the bearings inside the machine, it is even possible to spot what type of failure is occurring; whether the rollers are worn or the ballrace is damaged or the cage is damaged.
A kingpinless head (on the swivel caster) featuring a full ballrace of 2-3/8" diameter with steel ball bearings in hardened raceways.