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。
copper alloy 903 overall material, aligning style designator, 0.3750 inches nominal outside diameter, qq-c-390 aly d5 ty 3 fed spec single material response overall material document and classification, 0.2450 inches minimum and 0.2550 inches maximum overall width