How Do Rotary Unions Work in Wind Turbines?

On a wind turbine, rotary unions supply hydraulic fluid to power the turbine's blade pitch control system used to maintain optimum blade angle to achieve efficient power output. Rotary unions integrate hydrodynamic seal technology to provide long-life, maintenance-free operation required for wind turbines in offshore environments.
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Fluid rotary unions provide dependable supply and return hydraulic power to the blade actuators, operating continuously in the toughest environments and conditions.
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