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Structures and Materials Division Research and Technology Directorate NASA Glenn Research Center

Tribology and mechanical Components Branch
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Tribology and Mechanical Components Branch - Facilities
Vacuum Bearing Rig
  • Designed to evaluate torque characteristics and life of rolling element bearings
  • Simulates spacecraft conditions
  • Allows long duration tests of multiple bearings
  • Continuous or oscillating (dither) motion
  • Speeds to 4800 rpm
  • Vacuum levels to 10-8 torr
  • Bearings can be heated or cooled (-40 to +50°C)
    (Rig modification required.)
  • Solid or grease lubricants
  • RGA mass spectrometry to evaluate outgassing
  • Computer monitored torque measurement
  • Tests No. 1219 or 7008 size spacecraft bearings in preloaded pairs 1219 bearing size is 12/16" bore, 19/16 OD and 0.250" width 7008 bearings size is 40 mm bore, 68 mm OD and 15 mm width (Other sizes are possible if new fixtures are built.)
View of the Vacuum Bearing Rig
 
Above: View of the Vacuum Bearing Rig.
 

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Last Updated: April 21, 2009