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。
0.8820 inches minimum and 0.8860 inches maximum overall width, steel overall material, 2.1250 inches nominal bore diameter, sae 6115 assn std single material response overall material document and classification, 3.0000 inches minimum and 3.0020 inches maximum outside diameter