一種用緊定螺絲、鍵或銷安裝在軸上的擋圈,專門用於軸承的定位。有關通用軸環,請參閱軸環。不含:推力軸承墊圈;以及軸承襯套。
0.3752 inches minimum and 0.3755 inches maximum bore diameter, steel comp 303 overall material, bearing style designator, 0.6875 inches minimum and 0.8125 inches maximum overall width, 1.3125 inches minimum and 1.4375 inches maximum outside diameter