Approximately 95% of all rolling bearings are lubricated with grease. The grease forms a lubricant film on the contact surfaces that is sufficiently capable of supporting loads and is thus intended to prevent premature fatigue of the bearing.
Reliable information about the condition of the grease in the rolling bearing is therefore of major significance. Around three quarters of all rolling bearing failures thus occur in conjunction with the lubricant, for example, due to insufficient lubrication, lubricant contamination or ageing of the lubricant. Up until now, it has not been possible to analyse greases in rolling bearings during operation.
Publisher: Schaeffler Technologies AG & Co. KG