The skidding principle for high-speed ball bearing was obtained from the stress analysis of rolling body.The theoretical rotary speed of various components was determined through interaction modeling of bearing elements.And

the critical load of combined loaded bearing was calculated by combining quasi-static and quasi-dynamic analysis methods.Take 276927NK1W1(H) bearing

for example

the critical load under different loads was studied.The results show that

radial load has greater influence on critical load;the critical load of combined loaded bearing can be obtained when rotary speed of cage becomes steady obviously and no skidding occurs on the surface of loaded rolling elements.Finally

the reliability of this method was verified by the computation example of Gupta and test result of Poplowski.