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) |
|
