一種通常呈圓形的剛性部件,用於容納軸承。它用於定位軸承,但不會包裹軸承或限制軸承的運動。
1.0300 inches nominal bore diameter, 1.5300 inches minimum and 1.5310 inches maximum outside diameter, steel comp 440c overall material, aisi 440a fed spec single material response overall material document and classification, 0.0600 inches minimum and 0.0630 inches maximum overall width