Rotor, Hub and Main bearing

The rotor blades are made of glass fibre reinforced epoxy. The blades have an internal beam which carries the forces into the cast iron rotor hub. The blade is pitched around its axis by a 4 point ball bearing with outside gearing teeth. All the bearings and geared teeth are equipped with an automatic greasing system that is software controlled.

The special hollow casted hub transfers the blade forces and torque through a stiff double main bearing into the hollow main shaft. The shaft is directly connected to the main frame and ensures optimal load transfer into the tower. The rotor hub can easily be entered through the hollow shaft to facilitate maintenance. It houses six electrical yaw gears and three hydraulic yaw brakes that take care of the automatic yaw control.

Generator

Tower

Control
system

Nacelle

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