Case Study on Solving Grease Leakage Problem of Front Wheel Hub
In the course of intensive road test of a passenger vehicle,grease leakage was found in the front wheel hub.Through the analysis and investigation of the possible problems of hub bearing structural de-sign,size design,assembly installation,grease selection,grease filling,seal installation,etc.,it is con-firmed that the main reason for the leakage of hub bearing grease is the problem of grease filling process,resulting in uneven oil distribution,one-sided oil accumulation and eventual overflow.Then the optimized and improved scheme of changing the grease filling direction and adjusting the fitting tolerance of the seal ring is put forward,and the optimized and improved hub bearing is verified by bench test.The verification results show that there is no grease leakage problem in wheel hub bearing after optimization and improve-ment.
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