The Liebherr Group

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For the wind industry, Liebherr offers convincing solutions for a wide range of requirements: On one hand, components are installed directly into wind turbines. On the other hand, the company’s mobile, crawler, offshore and tower cranes are used for erecting wind turbines and constructing wind farms.

Liebherr is the only manufacturer worldwide that supplies the entire system for electromechanical and hydraulic rotor blade and azimuth adjustment in wind turbines, including components like large-diameter bearings, rotary drives, electric machines, and hydraulic cylinders.

To enable the adjustment movements of the wind turbine's pitch and yaw system, Liebherr designs drives for all megawatt classes of on-shore and off-shore wind turbines. The range also includes single and double-row tapered roller bearings or three-row roller slewing bearings for main bearings, ensuring high precision and accuracy due to their play-free design. The slip-free, hardened, super-finished raceways of the main bearings result in longer service life and more efficient power generation. Additionally, Liebherr has developed and tested a special grease for blade and azimuth bearings.

A major element of cooperation with customers is application-specific engineering to perfectly adapt each of the components. In the wind industry, Liebherr collaborates with nearly all leading turbine manufacturers, having equipped numerous wind turbines. The product portfolio comprises components for turbines from 800 kW up to solutions for multi-megawatt offshore turbines.

Services include short-term component replacement, refurbishment of damaged or older products, and the development of components that actively address field-related issues, thus extending the lifespan of wind turbines.

Liebherr's mobile and crawler cranes are characterized by modern technology, high quality, cost-effectiveness, and long service life. They have also proven themselves in the construction of wind farms. The product range includes telescopic mobile cranes for wind turbine installation, as well as lattice boom mobile cranes and crawler cranes in various performance classes, tailored to the needs of the wind industry. To meet the demands of more powerful installations and taller towers, the company group offers performance-optimized cranes and new jib systems with high load capacities.

Cranes on narrow crawler travel gears especially developed for the construction of wind farms can move on the narrow tracks from one unit to the next in full setup condition, that is including jib and full ballast. This is especially economical, because machine and equipment have to be mounted only once.

For erecting wind turbines with hub heights above 110 m in low-wind areas, Liebherr provides specially developed tower cranes with load capacities of up to 125 t. These are mounted on the wind turbine and configured to achieve the required lifting height with just one tie-in to the wind turbine tower. Advantages include the crane's small footprint, the ability to work at high wind speeds, and precise load handling with micromove.

Liebherr offers convincing solutions for loading and erecting offshore wind turbines. Harbor mobile cranes handle the loading of rotor blades, generators, nacelles, and monopiles for both onshore and offshore wind turbines. The tandem lift-assist system Sycratronic is often used for this purpose. In tandem lift mode, two harbor mobile cranes of the LHM 800 type can lift up to 616 t. Heavy-duty cranes for offshore use have load capacities of up to 5,000 t and a lifting height of up to 180 m above the deck. This enables them to meet all requirements, including diesel or electric drive units, explosion-protected cranes, and cranes suitable for operating temperatures between +40°C and -50°C. These cranes have also been successfully used in the construction or modification of oil and gas platforms and for pipeline laying and deep-sea operations down to 3,600 m below sea level.