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。
66 fed std all material responses overall material document and classification, surface hardness rc55.0-62.0 for type 440b and rc58.0-65.0 for type 440c special features, steel comp 440b or steel comp 440c overall material, 0.0781 inches nominal rolling element diameter, afbma std tolerance for balls, grade 10 standard tolerance designation