Page 7 of catalogue Bearing Technology for Wind Turbines of Schaeffler Technologies GmbH & Co. KG

Tracking the wind, adjusting the blades Long term mobility
Wind turbines must – like sailing ships – be aligned optimally to the wind in order to prevent extreme loads and allow costeffective operation. Azimuth drive Geared motors and actuators convert the signals from the controller. With high sensitivity and over the long term – with bearings from INA and FAG. The Schaeffler Group offers bearing arrangements for slewing gears for nacelle adjustment from a single source: Input shaft – Deep groove ball bearings Planets – full complement cylindrical Roller bearings Output shaft – Cylindrical roller bearings, Spherical roller bearings, Tapered roller bearings Blade adjustment The rotor blade angle is adjusted by electric or Hydraulic drives. These use sealed ELGES plain bearings with the maintenance-free ELGOGLIDE® fabric, protected against corrosion by means of the Corrotect® Plating.

7