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。
metallic hardness rating rockwell c min 55.0 in. and max 64.0 in. special features, ams7445 assn std all material responses overall material document and classification, 0.6248 inches minimum and 0.6252 inches maximum rolling element diameter, steel comp 440a or steel comp 440b or steel comp 440c overall material, ball style designator