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1. (WO2013160054) BEARING MONITORING METHOD AND SYSTEM

Pub. No.:    WO/2013/160054    International Application No.:    PCT/EP2013/056476
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Thu Mar 28 00:59:59 CET 2013
IPC: G01M 13/04
F16C 41/00
G05B 23/02
G07C 3/00
Applicants: AKTIEBOLAGET SKF
Inventors: HAMILTON, Keith
MURRAY, Brian
Title: BEARING MONITORING METHOD AND SYSTEM
Abstract:
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.