Failure mode of high speed rolling bearing under unstable running conditions

The performance of high speed rolling bearing was studied under unstable conditions of rotation speed fluctuation, and the failure modes of the bearing were analyzed under such conditions. Theoretical analysis and experimental results show that the impact of parts becomes serious, and skidding of bearing occurs more frequently, when bearing is running under unstable conditions. And the stiffness of the bearing support becomes fluctuant and the preload of the bearing becomes inadequate instantaneously, which will make the contact zones of bearing raceway extant.