WEAR PREVENTIVE PROPERTIES OF LUBRICATING GREASES: D3704
EXPLANATION
This test method is used to differentiate between greases having high, medium, and low wear preventive properties using Falex block-on-the ring friction and wear test machine.
TEST SUMMARY
The tester is operated with a steel test ring oscillating against a steel test block. Test speed, load, angle of oscillation, time and specimen surface finish and hardness can be varied to simulate field conditions. The width of the wear scar, developed on the test block from contact with the oscillating test ring, is measured.
TEST PRECISION
Repeatability: 23 % of the mean
Reproducibility: 39 %
There is no bias.
