兩個單列環形球軸承,尺寸經選定,組成匹配對或匹配組。軸承套圈表面經過特殊研磨,達到規定的偏置量,安裝時可產生預定的預緊力。可能包含一個單列角接觸軸承,軸承套圈表面經過特殊研磨,適合雙列安裝。
pair of bearings,back to back mtg; inner ring runout 0.0005 in. max; outer ring runout 0.0005 in. max special features, machined retainer fabrication method, radial load direction, unable to decode material, 0.0002 inches minimum radial and 0.0005 inches maximum radial and 0.0003 inches minimum axial and 0.0006 inches maximum axial internal clearance