Analysis of the Impact of the Cage Type on the Frictional Moment Ball Bearings

The paper presents the methodology and results of measurement designed to determine the effect of the rolling element separator (cage) at the frictional moment in ball bearings. The measurement was carried out on four groups on bearing with different cages. Measurements were carried out on torque-meter STPM, a device that has been designed and manufactured at Kielce University of Technology. The measurement results showed that the type of cage used in ball bearings has a significant impact on the frictional moment. In addition, the results also confirm that the size of the curvature ratio and the accuracy of the races shape have a significant impact on the frictional moment.