SKF hybrid bearings for high speed electric motors
SKF has selected a range of grease-lubricated
Centrifugal forces in bearings
SKF hybrid bearings can often be used at higher speeds than the standard speed ratings for grease-lubricated standard deep groove ball bearings given in the SKF General Catalogue. This is due to the lower density of silicon nitride compared to steel. The centrifugal force from a ceramic ball in a bearing is 40% of that of a steel ball at the same speed. Higher centrifugal loads cause higher bearing temperatures.