摘要
针对某航空电机用脂润滑密封轴承试验器试验失效问题,分别从轴承外观、材料、硬度、金相组织、润滑脂等5个方面进行检测和分析,发现密封圈磨损产生的磨屑掉入轴承内部使润滑脂变质是导致轴承失效的主要原因。提出将密封圈材料由聚四氟乙烯更换为硬度较低的氟橡胶,同时降低密封圈接触唇与内圈挡边过盈量等改进措施,取得了良好的效果。
Aimed at the failure problem of grease-lubricated bearing used in aeromotor during the test,the reasons of the bearing damage were analyzed from five aspects,including the appearance,material,hardness,microstructure and grease.It is found that the main reason for the bearing failure is that the wear debris generated by the wear of the seal ring falls into the bearing and cause the deterioration of the grease.The improvement measures such as changing the sealing ring material from polytetrafluoroethylene to fluororubber with lower hardness and reducing the interference between the contact lip of the sealing ring and the inner ring flange are proposed,and good results are achieved.
作者
陈彬
徐俊
张剑
郭帅
姜艳红
CHEN Bin;XU Jun;ZHANG Jian;GUO Shuai;JIANG Yanhong(Zhongzhe High-speed Railway Bearing Co.,Ltd.,Quzhou Zhejiang 324000,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2022年第12期192-196,共5页
Lubrication Engineering
关键词
滚动轴承
脂润滑
失效
磨屑
sealed bearing
grease lubricated
failure
abrasive dust
