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。
ball style designator, steel overall material, 0.5625 inches nominal rolling element diameter, afbma std tolerance for balls, grade 200 standard tolerance designation, nickel plate 0.0002 in. thickness over copper plate 0.002 in. thickness special features