ball bearing

== English == === Alternative forms === ballbearing === Noun === ball bearing (plural ball bearings) (mechanical engineering) A bearing assembly which uses spherical bearing balls as the rolling elements, usually consisting of two ballraces (rings). Hypernyms: roller bearing (broad sense) < bearing < component, part Coordinate term: roller bearing (narrow sense) (loosely, often) An individual spherical ball, usually made of steel or other hard material, suitable for use in a ball-based rolling element bearing. Synonyms: ball, (precise usage) bearing ball ==== Derived terms ==== ball bearing retainer caged ball bearing ==== Translations ==== ==== See also ==== race