浅析动车组轴箱轴承滚道剥离产生原因及防控措施

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关键词：CR400BF平台动车组；FAG12版轮对轴箱轴承；轴承滚道剥离；防控措施中图分类号： J266;U270.331+2 文献标志码：B doi：10.20213/j.cnki.tdcl.2025.02.024

Abstract：As one of the most important transmission components of vehicles，the reliability and safety of EMU wheelset axle box bearings are crucial to ensuring the safe and smooth operation of vehicles. Taking the raceway peeling failure of the FAG 12 wheelset axle box bearing of the CR40oBF EMU assigned to Shanghai depot in 2O23 as an example，this paper introduces the structural type，theoretical life and performance of the FAG 12 wheelset axle box bearing；Starting with the working mechanism of bearing，the stress changes of roling elements，inner ring and outer ring of bearing，the characteristics and generation mechanism of surface and subsurface fatigue are analyzed. This paper discusses the influence of bearing running mileage，running vibration impact and the change of bearing area after advanced repair on raceway stripping. At the same time， prevention and control measures are put forward from the aspects of improving the quality of bearing manufacturing and repair，speeding up the replacement of axle box bearings with new structures，encrypting the layout， monitoring，comprehensive application，and comprehensive judgment of TADS.

Key words： CR400BF EMU; FAG 12 wheelset axle box bearing; bearing raceway peling; prevention and control measure

动车组轮对轴箱轴承是动车组主要传动部件之一，其产品的可靠性和安全性是保障车辆安全平稳运行的至关重要因素。（剩余6918字）