Liebherr Pitch (Blade) Bearings for Wind Turbines

Liebherr blade bearings connect the blade root to the hub and let the blade rotate for pitch control. Besides single- and double-row four-point bearings, Liebherr offers triple-row roller bearings for pitch systems, greatly increasing load capacity as blades grow longer. Liebherr has supplied components for thousands of wind turbines, from 800 kW units to multi-megawatt offshore turbines, and works with virtually all major turbine makers.

Triple-row designs allow a smaller blade root diameter for the same blade length, or longer blades on the same bolt circle. Bearings are validated by lifetime tests on internal and external rigs and in the field.

Key features

• Higher load capacity per diameter
• Lower turning resistance, higher stiffness
• Weight and cost reduction
• Durable seals, application-optimised raceways

Technical data

Applications

• New turbines with long blades
• Replacing worn or cracked blade bearings
• Upgrades in life-extension projects

Support in Vietnam

FEYANA supplies Liebherr components for projects in Vietnam: configuration advice, passing technical enquiries to Liebherr, quotations, delivery follow-up and installation and maintenance support.

Information to send for a proposal

• Turbine model, rating and position (pitch, yaw, main shaft…)
• Existing part number or drawing, design loads
• Quantity, required date, replacement or new build

Figures from Liebherr-Components literature, for reference only; the exact configuration is engineered for each application. Liebherr is a trademark of Liebherr-International AG.

See more in Wind Turbine Bearings. Contact FEYANA for advice and a quotation: WhatsApp +84 988 641 591 – sales.00@feyana.com.