简单介绍了轮对空心轴式高速动力车在滚振试验台上进行高速试验时的临界速度及平稳指标 ,并详细介绍了各轴承温度的温升情况和一些规律。从试验情况看 ,如果轴承温度允许 ,齿轮箱漏油问题得到解决 ,并进一步改进外空心轴上卡环的结构 ,空心轴动力车在 4 0 0km/h应具有优良的横向及垂向平稳性指标 The critical speed and smoothness index of the wheelset hollow shaft high speed vehicle during the high speed test on the rolling vibration test rig are introduced briefly. The temperature rise and some laws of each bearing temperature are introduced in detail. From the test situation, if the bearing temperature allows, gearbox oil leakage problem is solved, and to further improve the structure of outer ring mandrel clasp, hollow shaft power car at 400km / h should have excellent lateral and vertical stability index