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。
0.2550 inches minimum and 0.2600 inches maximum overall width, 4.2900 inches minimum and 4.3000 inches maximum outside diameter, 2.3400 inches nominal bore diameter, sae assn std single material response overall material document and classification, steel comp 8620 overall material