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。
standard internal fit-up designation, 1.3778 inches minimum and 1.3780 inches maximum bore diameter, zzzw criticality code justification, angular load direction, annual ball bearing for quiet operation application to submarine usage departure from cited document