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。
66 fed std single material response overall material document and classification, 1.00 millimeters nominal overall width, 47.00 millimeters nominal outside diameter, 30.00 millimeters nominal bore diameter, hiab crane hemtt (heavy expanded mobility tactical truck); 3990-01-442-1939 bap (bridge adapter pallet) end item identification