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.
whidbey island class lsd end item identification, used on a 5 inch ap dynamometer 500-20k; 0.0781 inside diameter special features