Articles | Volume 3, issue 2
https://doi.org/10.5194/wes-3-947-2018
https://doi.org/10.5194/wes-3-947-2018
Research article
 | 
21 Dec 2018
Research article |  | 21 Dec 2018

Comparison of planetary bearing load-sharing characteristics in wind turbine gearboxes

Jonathan Keller, Yi Guo, Zhiwei Zhang, and Doug Lucas

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Latest update: 04 Jul 2025
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Short summary
The US Department of Energy's National Renewable Energy Laboratory (NREL) and industry partners successfully demonstrated a new gearbox design using preloaded tapered roller bearings in the planetary section. The new gearbox design demonstrated improved planetary load-sharing characteristics in the presence of rotor pitch and yaw moments, resulting in a predicted gearbox lifetime that is 3.5 times greater than the previous conventional design with cylindrical roller bearings.
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