An analysis of continuous rotating torque over 360° or more can be a powerful tool in determining a variety of
application-related bearing problems. MicroTorqueTM testers manufactured by Measurement Research, Inc. have torque resolution to 10 mg-mm (0.000014 oz-in) and can show raceway damage, contamination, misalignment and lubricant issues in small bearing assemblies.

M15 Torque Tester Measurements Research, Inc.	Typical torque trace.

Typical results of low-level torque testing of assemblies with different faults/characteristics are shown below

RACEWAY MISALIGNMENT Typical inner race misalignment of a preloaded bearing pair as shown from a MicroTorqueTM torque analysis where inner rings are rotated during test. Note that almost all preloaded bearing assemblies exhibit this characteristic to some extent. The test is very sensitive and can detect misalignment of <.0001 inch.

Torque trace of misaligned bearing(s)