Ball Bearing Testing

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