Bearing part life diagnosis method, bearing part life diagnosis device, and bearing part life diagnosis program

摘要

PROBLEM TO BE SOLVED: To provide a life diagnosis method of a bearing component, a life diagnosis device of the bearing component, and a life diagnosis program of the bearing component by which the remaining life thereof can be estimated with high accuracy from a small amount of data.SOLUTION: In a life diagnosis method of a bearing component, an accumulative fatigue degree calculation unit 42 obtains an accumulative fatigue degree for each of a plurality of times of the rolling fatigue tests with respect to a plurality of bearing components for test on the basis of an S-N curve and a diagnostic unit 37 obtains the accumulative fatigue degree of the bearing component for diagnosis on the basis of X-ray analytical data of the bearing component for diagnosis, and an association table representing a relation between the X-ray analytical data of the bearing component for test and the accumulative fatigue degree, obtains a life of the bearing component for diagnosis on the basis of the S-N curve, and obtains the remaining life of the bearing component for diagnosis on the basis of the accumulative fatigue degree and the life.SELECTED DRAWING: Figure 3