Bearing monitoring method and system

摘要

A method for predicting the residual life of a rolling-element bearing (12) comprising the step of: measuring the magnitude and/or the frequency of occurrence of vibrations or high frequency stress waves emitted by rolling contact of said rolling-element bearing (12), recording said measurement data as recorded data, and predicting the residual life of said rolling-element bearing (12) using said recorded data and an International Organization for Standardization (ISO) 281 rolling-element bearing life model. A life modification factor is determined from in service measurements of at least one parameter indicative of lubrication cleanliness and/or film thickness rather than using said International Organization for Standardization (ISO) 281 rolling-element bearing life model's assumed or predicted lubrication cleanliness values.