ASTM D3704 Wear Preventative Properties of Grease Using the Block-on-Ring Test Machine in Oscillating Motion
Oscillating systems in industrial machinery often have moving metal components that slide against each other, potentially causing wear to the metals. To lessen or prevent wear, the moving metals are lubricated. This test uses a steel ring against a steel block to measure the ability of grease to reduce wear in oscillating systems.
Using a Block-on-Ring Friction and Wear Test Machine, a steel block is coated with worked test grease and put in contact with a steel ring. A load is applied and the ring is oscillated for a specified time at a specified speed. The block is then examined under a microscope for scarring. The average scar size, coefficient of friction, psi load and metal weight loss are reported. Options available for this test are time, temperature, oscillation speed, load, ring metal and block metal.