[Purposes]This paper aims to find out the reasons for the spalling of the inner and outer race-way of the rod bearing used in the main fuel pump of a certain engine and improve the life and reliability of the main fuel pump.[Methods]This paper makes simulation analysis on the structural composition,matching clearance and raceway force of the rod bearing used in the main fuel pump.[Findings]The rea-son for the raceway spalling is that the local stress caused by partial load exceeds the allowable range of the material.This study further found out the reason of bearing off-load.Aiming at the cause of off-load,the measures to control the clearance and roll rod modification are developed.The feasibility of the mea-sures is proved by simulation analysis and test.[Conclusions]The solution of this problem improves the life and reliability of the main fuel pump,and provides a design basis and reference scheme for the de-sign and spalling fault analysis of similar rolling bearings.
关键词
滚动轴承/偏载/应力/可靠性
Key words
rolling bearing/unbalance loading/stress/reliability
维普
万方数据