Hydraulic pitch cylinders in wind turbines are subjected to intense loads

Extreme loads from wind and weather make heavy demands

The list of requirements for the correct components and materials is especially long for pitch applications that are challenged daily by an intense operating pattern. In particular, it makes heavy demands on seals and attacks the surface of the piston rod and the cylinder tube. Loads are even heavier for offshore wind turbines in the form of a saline-rich environment and significant temperature fluctuations

Precision and strength

The exact adjustment of the turbine blades can make a critical difference under extreme wind conditions. This places huge demands on the quality of important components, and FJERO therefore puts its hydraulic pitch cylinders through accelerated lifetime tests, in order to ensure absolute functional safety. The cylinders are also built to be able to function for a minimum of 20 years with a maintenance-free design. All our hydraulic pitch cylinders are supplied with documented traceability – all to ensure precision and strength in the wind turbine.