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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
Spur Gear Fatigue Test Rigs
  • Provides accelerated fatigue life testing for standard spur gears
  • Standard gears are 88.9 mm (3.5") pitch diameter, 6.3 mm (1/4") face width spur gears
  • Test speed to 10,000 rpm
  • Typical Hertz contact stress 1.7 GPa (250 ksi)
  • Investigate effect of materials, heat teat, shot peen, lubricants, etc.
  • Supports gear health and usage monitoring experiments
  • Used for gear surface fatigue experiments since 1972
Spur Gear Rig with gear cover removed
Above: Spur Gear Fatigue rig with gear cover removed.

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Last Updated: April 21, 2009