A homogenous spherical body, a series of which provides the rolling elements in a bearing, ball (as modified). The item is designed primarily to alleviate friction. It may have other usages such as the checking component in a ball-type check valve. Excludes:ball,check; ball,valve,ported.
asr9 conrad type ball bearing with double shielding and steel races and balls. nha rotary joint nsn: 5985-01-313-7839 p/n 1639 special features, airport surveillance radar 9 (asr9) end item identification