对高速动力车托架轴承失效进行了分析,发现轴承润滑油中含有大量水分是导致轴承失效的直接原因。对动力车在高速状态下的特性及其与环境的关系等认识不足,托架油箱结构设计考虑不周是造成托架箱进水,进而导致托架轴承系统失效的根本原因。采取了开排水孔、通气孔等改进措施,解决了高速动力车托架轴承失效问题。 Analysis of high-speed dynamic truck bearing failure, found that the bearing oil contains a lot of water is the direct cause of bearing failure. The lack of understanding of the characteristics of the motor vehicle at high speed and its relationship with the environment, the poor design of the fuel tank structure is the root cause of the bracket bearing system failure due to water inflow. Take open drainage holes, vents and other improvements to solve the high-speed vehicle bracket bearing failure.