ASTM D4170 Fretting Wear Protection by Lubricating Greases
Two thrust type bearings lubricated with grease are loaded to 550 pounds force and oscillated through a 12° arc at 1800 cycles per minute for 22 hours at room temperature.
The fretting wear is the average weight loss of the two bearings. The fretting wear requirement for ASTM D4950 greases is 10 mg loss maximum.
Instructions:
Specify temperature