MRC Method - Performance Characteristics of Lubricating Grease in Antifriction Bearings at Elevated Temperatures and Loads
CRC L 54
Measure grease evaporation and oxidation resistance in a high speed ball bearing.
A 204 K ball bearing is packed with 3.2 cc of grease and rotated at 3,000, 10,000, or 20,000 rpm under thrust loading as high as 145 kg while heated to a maximum of 232°C. Testing is 20 hours of running and 4 hours at rest. See ASTM D3336 for a similar test. Greases with good oxidation and evaporation resistance and oil release characteristics will generally perform well in this test. This test is referred to as the MRC test because it uses a high speed spindle first produced by the MRC Corporation.
The information presented in this article was originally derived from a publication from Mobil, and is presented here for information only. Please consult with your Certified Lubrication Specialist to ensure proper testing is done.