摘要
本文对６２３套轿车前轮轮毂轴承的早期失效进行了统计分析。研究发现轿车轮毂轴承具有鲜明的失效特性。其主要失效形式为①轿车前轮轮毂所用的双到圆锥滚子轴承和双列球轴承都只有单列轴承部件发生早期失效；②大多数轴承内孔与轴径配合面有周向划痕；③除部分轴承滚道表面发生疲劳剥落外，较多轴承滚道表面发生条状等间距剥落；④多数轴承滚道表面出现等间距压痕；⑤滚动体的主要失效形式为疲劳剥落、大端出现环状划痕及点蚀；（６）部分轴承滚道表面有冲击压痕。这些失效现象与轿车轮毂的结构特征及车轮的动力学性能直接相关。作者建议轿车前轮轮毂应采用两个单列角接触轴承代替单个双列向心推力轴承。
The failure characteristic of automotive front wheel hub bearings is analyzed in statistic in this paper. By investigating 623 bearings with unpredicted failure, it is found that hub bearings fail with distinct specialties:Failures only occur at the outer row of the double-row bearing. Most bearings suffer from fretting wear at the fit bore with the journal. Washboard like streaks and flakes take place at the bearing raceway. The rollers always fail with scratch and pitting at the ends. It is suggested that double row bearings should be substituted with two separately single row bearings as the front wheel bearings.
出处
《机械设计与研究》
CSCD
北大核心
2000年第2期42-43,共2页
Machine Design And Research
基金
上海汽车科技与发展基金
关键词
轿车轮毂轴承
失效特性
条状剥落
统计分析
Automobile wheel bearing
Failure-characteristic
Single row damage
Streaks and flak?
