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。
0.0300 inches minimum and 0.0320 inches maximum overall width, 66,aisi/sae 1070 fed std single material response overall material document and classification, steel comp 1070 overall material, 2.5020 inches minimum and 2.5170 inches maximum bore diameter, 3.2200 inches minimum and 3.2400 inches maximum outside diameter