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The Ball Bearing Test Rig enables to test ball bearings for their lifetime under high vacuum up to +300°C.

This facility enables to measure the torque of ball bearings from air to high vacuum. Environments vary from vacuum, non aggressive gases (e.g. CO2) under controllable pressures (e.g. to simulate Martian environment) or to air with controlled humidity. The tests can be performed at temperatures from RT to +300°C.

A testbox is available for 7004 bearings with a maximum preload of 40N. The cages can be manufactured of individual composites (e.g. self-lubricated-polymer-composites). The preload will be measured before and after a ball bearing test with a tensile-test-machine.

Post-Analysis may cover measurement of wear by profilometry, SEM or microbalance, investigation of surface structure or material transfer by SEM/EDX.

The device is fully computer controlled. To the control parameters, e.g. sliding distance, motion profiles (uni, oscillating, ..), can be selected. On-line-data acquisition offers to post-process data, e.g. for automatic calculation of friction coefficients in running-in- or steady state, as well as endurance of solid lubricant coatings.

Measurement of
– Vacuum, Temperature
– Residual gas