Ball bearings dynamically testing in TVAC
Testing of ball bearings requires to pre-load them axially and/or radially. This needs manual operation by a technician. If bearings shall be characterized for different pre-loads, every change in the pre-load requires to open the vacuum chamber. This means a TVAC test can be run only at one fixed pre-load. On the other hand, a typical thermal vacuum life test starts at room temperature and continues to minimum one cold and one hot temperature level, [...]
