Abstract
Roll bearings are commonly used in rotating machines, and vibration method is often employed for monitoring condition of roll bearings. Though vibration method needs high skill and long time to compare abnormal condition to normal one, diagnostic result is not enough to obtain real condition of roll bearings. Shock pulse method, SPM, was developed in 1969 in Sweden with further innovation till today, and is now world widely accepted philosophy for condition monitoring of roll bearings and machine maintenance.SPM diagnostics reports not only condition of rotating roll bearings but also thickness of lubricating oil, that helps maintenance staff to know proper lubrication for getting longer life of roll bearings and for performing effective preventive maintenance in proper timing.
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