Gearbox Reliability Collaborative Investigation of High-Speed-Shaft Bearing Loads

Research output: NRELTechnical Report


The loads and contact stresses in the bearings of the high speed shaft section of the Gearbox Reliability Collaborative gearbox are examined in this paper. The loads were measured though strain gauges installed on the bearing outer races during dynamometer testing of the gearbox. Loads and stresses were also predicted with a simple analytical model and higher-fidelity commercial models. The experimental data compared favorably to each model, and bearing stresses were below thresholds for contact fatigue and axial cracking.
Original languageAmerican English
Number of pages36
StatePublished - 2016

NREL Publication Number

  • NREL/TP-5000-66175


  • dynamometer
  • gearbox
  • Gearbox Reliability Collaborative
  • high-speed shaft
  • NREL
  • testing


Dive into the research topics of 'Gearbox Reliability Collaborative Investigation of High-Speed-Shaft Bearing Loads'. Together they form a unique fingerprint.

Cite this