The tribological performance of industrial vacuum bearings for space use was experimentally evaluated. The bearings selected for investigation were an 8 mm bore deepgroove ball bearing lubricated with a sputtered MoSi film and one lubricated with an ion-plated Ag film, commercially available from three Japanese bearing manufacturers. Based on survey results of tribological requirements for existing satellite mechanisms, four types of bearing tests were defined and conducted: a vacuum test at room temperature, an atmosphere resistance test, a thermal vacuum test, and a vibration test. In addition to these tests, the variation in the tribological performance of the industrial bearings was also investigated. The results of more than 80 tests demonstrated that the industrial vacuum bearings had sufficient lubrication lives with low frictional torque and the data were reasonably repeatable, indicating a potentialfor space use.
Evaluation tests of industrial vacuum bearings for space use
Tribo Test ; 10 , 2 ; 117-134
2003
18 Seiten, 13 Bilder, 5 Tabellen, 4 Quellen
Aufsatz (Zeitschrift)
Englisch
Evaluation tests of industrial vacuum bearings for space use
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