Schaeffler North America


Wind turbines must be aligned optimally to the wind in order to prevent extreme loads and to provide the highest possible energy output.

Azimuth drive/pitch drive

Wind turbines adjust automatically due to active systems. Geared motors and actuators convert the signals from the controller. Schaeffler Group Industrial offers bearing supports for slewing gears for nacelle and blade angle adjustment from one source:

  • Input shaft – deep groove ball bearings
  • Planet gears – full complement cylindrical roller bearings
  • Output shaft – cylindrical roller bearings, spherical roller bearings, tapered roller bearings

Blade adjustment

In addition, the blade angle can be adjusted using electric or hydraulic systems. These use sealed plain bearings with the maintenance-free Elgoglide® fabric, protected against corrosion by means of the Corrotect® plating.


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