一種均質球體,由一系列球體構成,構成軸承中的滾動元件,即球(經過改良)。此部件主要用於減輕摩擦。它也可能用於其他用途,例如球式止回閥中的止回部件。不含:止回球;附孔球閥。
steel overall material, ball style designator, 0.0781 inches nominal rolling element diameter, cres 440 grade 5,99643 mfr ref single material response overall material document and classification, afbma std tolerance for balls, grade 5 standard tolerance designation