The MFT5000 is a versatile mechanical property tester capable of simulating a vast number of tribology and wear tests on same platform. This application note shows how the MFT5000 can be used to study grease/oil for EP and wear tests using its block on ring module. Using this module, the MFT Platform can perform several ASTM tests such as ASTM D2981, D3704, G77, G176, D2509, 2782, Timken Ok Load test and several customized tests
Wear Test - This method covers the determination of the friction and wear characteristics of greases or oil in sliding applications. Depending on the application and test requirements, the samples can be submerged, or the lubricant can be circulated using pumps or grease dispensers at pre-determined flow rates. The test can also be used to evaluate tribological and wear properties for solid lubricants and coatings. The tests can be easily configured by defining the temperature (up to 500C), loading rate, test load (up to 10,000N) and rotation speed (up to 5000 rpm). The rotating shaft is supported from both ends to prevent bending under high loads.
EP Test - This method covers the determination of the extreme pressure (EP) characteristics of oil or greases in sliding applications. Load is increased in step or linear mode until there is seizure or sudden increase of coefficient of friction during the test. This method is commonly used in Timken OK test for grease and lubricants (ASTM D2509 and ASTM D2782). The wear on the sample is evaluated to determine pass/fail criteria for the lubricant at the load being tested.