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, hiab crane hemtt (heavy expanded mobility tactical truck); 3990-01-442-1939 bap (bridge adapter pallet) end item identification, 30.00 millimeters nominal bore diameter, 47.00 millimeters nominal outside diameter