Raceway defect analysis of rolling element bearing for detecting slip and correlating the force on rolling element with peak acceleration due to impact

Abstract

Rolling element bearings are essential components in rotary machinery and tend to have slip during motion diverting from the ideal rolling motion. Persistent slip leads to an increase in the degradation rate of bearing, and hence identifying the same is the subject of this study. A time-domain analysis method to estimate slip in bearings with raceway faults is proposed in this study. A mechanics-based dynamic model of rolling-element bearing is proposed in the study, including cage slip. The simulation results are used to establish a base for cage slip estimation using the proposed methodology, which is further used for slip estimation from experimentally recorded acceleration signals for defective bearings. Additionally, the dynamic model correlates the force on the rolling element with peak acceleration recorded during rolling element-defect interaction. Experimental verification of the correlation advocates using the underlying empirical method for obtaining force from peak acceleration. © 2021 Elsevier Ltd