公开(公告)号：US10578160B2

公开(公告)日：2020-03-03

申请号：US16035866

申请日：2018-07-16

Applicant: ROLLS-ROYCE PLC

Inventor： Jonathan Masters

IPC: F16C33/12 ,  F01C21/02 ,  F16C17/10 ,  F16C32/06 ,  F16C33/10 ,  F16C33/14 ,  F04C2/18 ,  F01D25/16 ,  F16C17/22

Abstract: A gear pump bearing block has a bush formed of antifriction alloys. The bush has a cylindrical portion providing a bore adapted to receive a bearing shaft of a gear of the pump. It further has a thrust face at the end of the cylindrical portion, the thrust face being adapted to slidingly engage with a side surface of the gear. The bush has an inner component providing the bore, and an outer component forming a radially outer surface of the cylindrical portion. The inner and outer components are formed of respective lead bronze alloys, the lead bronze alloy of the outer component having a higher lead content than the lead bronze alloy of the inner component.