The DG03: An Outline of Suggested Changes

Matthias Stammler, Oliver Menck, Yi Guo, Jon Keller

Research output: NRELPresentation


The Design Guideline 03 (DG03) published by the National Renewable Energy Laboratory in 2009 is widely used in the wind industry. It allows engineers to get acquainted with design aspects and methodologies to determine pitch and yaw bearing static capacity and fatigue life. The combination of the detailed theoretical descriptions and practical examples makes it a highly application-oriented document. Since its publication, the knowledge about oscillating bearings, slewing bearings, and wind turbines has grown significantly. Some aspects of the DG03 need updates to reflect the current state of the art. This work covers proposed changes for an upcoming revision of DG03.
Original languageAmerican English
Number of pages23
StatePublished - 2023

Publication series

NamePresented at the Conference for Wind Power Drives 2023, 21-22 March 2023, Aachen, Germany

NREL Publication Number

  • NREL/PR-5000-85562


  • design guideline
  • pitch bearing
  • reliability
  • wind turbine


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