Bearing Device State Detecting Method, Detecting Device, And Program

Abstract: This detecting method, for detecting the state of a bearing device configured to include a plurality of rollers and first and second members constituting rolling surfaces for the plurality of rollers, includes applying an alternating current voltage to an electric circuit formed from the plurality of rollers and the first and second members, measuring an impedance and a phase angle of the electric circuit when the alternating current voltage is applied, and deriving an oil film thickness and a metal contact ratio between the first member and the plurality of rollers, and/or between the second member and the plurality of rollers, on the basis of the impedance and the phase angle, wherein the oil film thickness and the metal contact ratio are derived using a calculation formula corresponding to an electric circuit formed by means of linear contact that occurs in the bearing device and that arises between the rollers and at least one of the first and second members.

Patent Information

Applicants

Inventors

Specification

Documents

Application Documents