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.
afbma standard tolerance for plastic balls,grade 1 special features, delrin mfr ref single material response overall material document and classification, ball style designator, plastic overall material, 0.4990 inches minimum and 0.5010 inches maximum rolling element diameter