As part of efforts to minimize friction in drive technology—particularly in rolling bearings—lubricating greases are being manufactured with base oils of increasingly lower viscosity. This goes hand in hand with increasingly thinner lubricating films, which are becoming more and more sensitive to hard particles. This can lead to premature rolling bearing failure. The issue of the degree of contamination in greases caused by extremely fine dirt and dust particles—for example, resulting from grease production or grease application during use—is becoming increasingly important.
The members of the DGMK Lubricants Technical Committee are therefore working to develop a robust test method for the reliable determination of (fine) contaminant levels in greases. The improved standard is intended to help extend the service life of grease-lubricated applications.
In its role as a neutral scientific association, the DGMK is coordinating this research project, for which it is seeking public funding from the BMWE under the IGF program.