The Micro Pitting Rig (MPR) is a triple disc machine for researching rolling contact fatigue (RCF) failure mechanisms in the form of micro and macro pitting at realistic contact pressures under both lubricated and unlubricated conditions. It is used extensively by tribologists, to study a range of failure mechanisms observed in
real world applications and as a screener test for current lubricant formulations, to ensure they are fit for purpose. This three-ring configuration allows the test roller to be subjected to a large number of rolling contact cycles in a short period of time and hence significantly reduces testing time.
