Method and apparatus for predicting the life of a rolling bearing, rolling bearing selection apparatus using the life prediction apparatus, and storage medium

摘要

A dynamic equivalent load P is calculated from data information of a rolling bearing. Next, a reliability coefficient a₁ is determined, a lubrication parameter a_L corresponding to a used lubricant is calculated, and a contamination degree coefficient a_c is determined in consideration of a material coefficient. A fatigue limit load Pu is calculated on the basis of the data information. Thereafter, a load parameter {(P−Pu)/C}·1/a_c is calculated. On the basis of the lubrication parameter a_L and the load parameter {(P−Pu)/C}·1/a_c, a life correction coefficient a_NSK is calculated with reference to a life correction coefficient calculation map. The bearing life L_A is calculated by L_A=a₁·a_NSK·(C/P)^p.