This test method outlines the recommended procedure for performing the no-load rotational starting torque test on airframe rolling bearings. Bearings covered by this test method shall be antifriction ball bearings and spherical roller bearings.
This standard specifies the basic requirements for the application of barrier coatings to anti-friction bearings for the purpose of preventing lubricant loss by surface migration and spreading during storage and in service.
This specification covers antifriction self-aligning rod and roller bearings operating in the temperature range of -67° to +300°F (-55° to +149°C) and intermittent spikes to 350°F (177°C).