2404730504型推力滚针轴承失效原因分析  

Failure Reason Analysis of Thrust Needle Roller Bearing Type 2404730504

作　　者：程林 疏剑[1] 杨章林[1] 程梅[1] CHENG Lin;SHU Jian;YANG Zhanglin;CHENG Mei(College of Mechanical and Automotive Engineering,Chuzhou Vocational and Technical Colleges,Chuzhou Anhui 239000,China)

机构地区：[1]滁州职业技术学院机械与汽车工程学院,安徽滁州239000

出　　处：《盐城工学院学报（自然科学版）》2020年第2期36-40,共5页Journal of Yancheng Institute of Technology:Natural Science Edition

基　　金：安徽省自然科学基金重点项目(KJ2019A1131)。

摘　　要：通过对某公司JLR整车RDU总成中2404730504型推力滚针轴承的磨损失效分析,结合硬度与金相检测,以及对该轴承生产记录的查询,推断润滑不良是轴承严重损坏的主要原因。利用常规寿命的轴承试验机对2404730504型推力滚针轴承进行贫油试验,发现其与某公司JLR整车RDU总成中实际轴承磨损状况非常吻合,总时长与循环次数也相差不大,验证了润滑不良是致使轴承严重损坏的主要原因。Based on the wear failure analysis of 2404730504 thrust needle roller bearing in the RDU assembly of JLR vehicle of a company,combined with the hardness and metallographic examination,as well as the query of the production record of the bearing,it is concluded that the main reason for the serious damage of the bearing is the poor lubrication.The bearing test machine with normal life was used to test the 2404730504 thrust needle roller bearing.It was found that it was very consistent with the actual bearing wear condition in the RDU assembly of JLR vehicle of a company,and the total time and cycle times were similar.It was verified that the poor lubrication was the main cause of the bearing’s severe damage.

关 键 词：动力学 推力滚针轴承 失效分析 接触特性 

分 类 号：TG166.7[金属学及工艺—热处理]