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。
0.9900 inches minimum and 1.0100 inches maximum rolling element diameter, quality assurance tested for submarine antenna application departure from cited designator, ball style designator, nickel alloy and copper alloy and aluminum alloy overall material, zzzx criticality code justification