In view of the failure of the bearing mounted in front of an aero engine compressor during the lubricating oil interruption test,the macroscopic and microscopic inspection and metallographic examination of the failed bearing were carried out.It was determined that the failure of bearing was high-temperature wear failure,which was mainly due to the high heat generated by friction in the process of bearing oil interruption.The friction heat generation mechanism of the bearing was analyzed.It was concluded that the friction heat generation of the bearing was related to the groove radius of curvature,pocket clearance and guide clearance of the bearing when the load and speed were constant.Orthogonal design method was used to analyze the influence of bearing structural parameters on bearing heat generation.It was concluded that increasing the inner groove radius and guide clearance of the bearing could improve the anti-oil interruption capacity of the bearing.The improved bearing successfully passed the engine lubricating oil interruption test.