Disk Machine Investigation Of Thin Oil Films - Lubricant Testing Method

Disc machine tests are becoming recognized as useful and reliable for predicting EP lubricant performance. Test conditions may be chosen to simulate those in practice. A simple testing procedure is described that has been developed to meet the need of evaluating EP properties in oil formulation studies. Due to the temperature being the most important cause of lubrication failure, kinematic conditions of both discs, which strongly influence flash temperature and heat flow as well as EHD lubrication effectiveness, were assumed as variable test parameters and a wider oil screening criterion has been proposed. Preliminary test results are reported.