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。
hydraulic cable winch model 5466 s/n 41498; lcs2 end item identification, ball is used with 5393-51 check plug assembly, and 5393-52 compression spring; next higher assy: hydraulic motor 5393 special features, ball, steel part name assigned by controlling agency, steel ball material