AN ANALYTICAL MODEL FOR THE PREDICTION OF THE VIBRATION RESPONSE OF ROLLING ELEMENT BEARINGS DUE TO A LOCALIZED DEFECT

An analytical model has been proposed for predicting the vibration fre quencies of rolling bearings and the amplitudes of significant frequen cy components due to a localized defect on outer race, inner race or o n one of the rolling elements under radial and axial loads. The model predicts a discrete spectrum having peaks at the characteristic defect frequencies and their harmonics. In the case of an inner race defect or a rolling element defect under a radial load, there are sidebands a round each peak. The effect of load and pulse shape on the vibration a mplitude has been considered in the model. Typical numerical results f or a 6002 deep groove ball bearing have been obtained and plotted. A c omparison with the experimental values obtained from published literat ure shows that the model can be successfully used to predict amplitude ratios among various spectral lines. (C) 1997 Academic Press Limited.