The Cause and Effect Analysis of Aero-Engine Roller Bearing Skid Based on Assembly Process Inspection and Trial Run

In this paper, firstly the reasons of aero-engine bearing skid were analyzed from these aspects of fault phenomenon, skid mechanism, manufacturing process, practical use, trial run, measurement and inspection by fishbone diagram. In order to ensure the economy and airworthiness of aero-engine manufacturing, the use and repair of bearing with skid damage were discussed by means of information statistics and trial run experiments. Then the effect of bearing skid on the engine safety was analyzed. Based on the above research, the possible causes and preventive measures for bearing skid are expounded. And the repair method, experimental content and inspection standard of bearing with skid are presented in detail. The research has important guiding significance for aero-engine bearing to master its working state, prevent its fault and guarantee the aviation safety.