wind turbine blade bearing

Wind turbines must be aligned optimally to the wind in order to prevent extreme loads and to provide the highest possible energy output.
The blade angle is always optimally adjusted to the wind speed via the balde bearing in order to control the performance of the wind turbine.The high loads from the dynamic stresses on the rotor blades must be safely dissipated into the rotor hub via the raceways and the screw connections.Very high loads occur in some instances from the dynamic load of the rotor blades. These loads must be transferred securely via the raceways and the screw connections of the blade bearings into the rotor hub. Single or double row four point contact ball bearings with a cage are used here, with internal or external gearing or without gearing, depending on the drive design.
As an essential component of the turbine safety design, blade bearings must ensure that the blades can be reliably and consistently adjusted under all operating conditions. A long operating life and high reliability are achieved thanks to the optimized dimensioning of the bearings and a maintenance concept tailored to the turbine and the operating conditions.The bearing can be produced with internal or external gear teeth or without gear teeth depending on the blade adjustment concept of the turbine.
In addition, the blade angle can be adjusted using electric or hydraulic systems. These use sealed plain bearings with the maintenance-free fabric, protected against corrosion by means of the corrotect plating.