Investigations Into The Contamination Of Lubricating Oil In Rolling Element Pump Bearing Assemblies
The use of rolling element bearings in pumps is standard practice. Of the many factors that affect their long-term performance, contamination in the bearing lubricating oil plays a major part. Of particular concern are contamination and degradation of the lubricating oil over a short period of time. Repeated short-term contamination implies that the lubricating properties of the oil will be impaired and bearing reliability will be reduced. This paper presents an analysis of the factors affecting the short-term contamination of oil in ring oil lubricated rolling element bearings. The bearings analyzed were those used in the author’s company’s standard range of centrifugal pumps where short-term oil degradation had been reported in a number of installations. The test conducted are reviewed and the results are discussed. Recommendations are made and details of field tests are given demonstrating the success of the modifications carried out.
Bradshaw, Simon (2000). Investigations Into The Contamination Of Lubricating Oil In Rolling Element Pump Bearing Assemblies. Texas A&M University. Turbomachinery Laboratories. Available electronically from