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。
steel comp e52100 overall material, 4.7400 inches minimum and 4.7500 inches maximum outside diameter, 0.2060 inches minimum and 0.2100 inches maximum overall width, sae 52100 assn std single material response overall material document and classification, 3.2000 inches minimum and 3.2050 inches maximum bore diameter