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。
aluminum overall material, ball style designator, ams4118 assn std single material response overall material document and classification, ball spherical within 0.0002 in.,surface finish 32 microinches aa and surface treatment,anodized per ams 2470 special features, 0.2177 inches minimum and 0.2197 inches maximum rolling element diameter