Gearbox Reliability Collaborative Bearing Calibration

Research output: NRELTechnical Report


NREL has initiated the Gearbox Reliability Collaborative (GRC) to investigate the root cause of the low wind turbine gearbox reliability. The GRC follows a multi-pronged approach based on a collaborative of manufacturers, owners, researchers and consultants. The project combines analysis, field testing, dynamometer testing, condition monitoring, and the development and population of a gearboxfailure database. At the core of the project are two 750kW gearboxes that have been redesigned and rebuilt so that they are representative of the multi-megawatt gearbox topology currently used in the industry. These gearboxes are heavily instrumented and are tested in the field and on the dynamometer. This report discusses the bearing calibrations of the gearboxes.
Original languageAmerican English
Number of pages32
StatePublished - 2011

NREL Publication Number

  • NREL/TP-5000-47852


  • bearing calibration
  • Gearbox Reliability Collaborative (GRC)
  • gearboxes
  • wind turbine
  • wind turbine reliability


Dive into the research topics of 'Gearbox Reliability Collaborative Bearing Calibration'. Together they form a unique fingerprint.

Cite this