Inspection and analysis of wear of backup ring of large-scale self-aligning bearing

The swinging oscillation test of a large-scale self-aligning ball bearing is made on a dynamic testing machine under axial load and swinging oscillations. The object of test is to investigate the wear on the inside spheric surface of backup ring in the bearing and the inspect method of wear amount. Results of test show that the surface wear is gradient along axial direction in the bearing, and the inspect device introduced in this paper is simple and practical.