The Liebherr Group

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Liebherr is a powerful partner for the wind industry and offers convincing solutions for a wide range of requirements: On the one hand, components manufactured by Liebherr 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.

Offering slewing bearings, slewing drives, electric machines and hydraulic cylinders, Liebherr is the only manufacturer worldwide that provides single components as well as entire systems for electromechanical and hydraulic pitch and yaw adjustment in wind turbines. The range includes single and double-row tapered roller bearings as main bearings. Due to their clearance-free design, these bearings are particularly suitable for the highest demands on precision and accuracy. In addition, Liebherr offers three-row roller slewing bearings as torque bearings, with low stresses in the adjacent construction; as well as a specially developed and tested grease for pitch and yaw 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.

A comprehensive range of services includes short-term replacement of components, reconditioning of damaged or older products, and development of components that actively address damage patterns in the field to extend service life.

With their innovative technology, high quality, profitability and longevity, mobile and crawler cranes from Liebherr own a leading position in the world market. For decades, they have also been proving their value in the construction of wind farms. As well as telescopic mobile cranes, Liebherr also provides lattice boom mobile cranes and crawler cranes to erect wind power systems, in a variety of performance classes, specifically matched to meet the needs of the wind power industry. The Liebherr Group keeps pace with the development of larger and more efficient turbines as well as the increasing hub heights by offering cranes with optimized performance and new jib systems, reaching higher lifting 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 a hub height of 110 m or more in low-wind areas, Liebherr also offers specially developed tower cranes with lifting capacities of up to 125 t. They are mounted on the wind turbine and are configured in a way that the necessary lifting height can be reached by guying the crane to the mast at one point only. Advantages are reduced space required by the crane, the ability to work despite high wind speeds and sensitive lifting of loads using Micromove.

The Liebherr Group also offers innovative solutions for the loading and erection of wind turbines at offshore locations. Liebherr mobile harbor cranes handle rotor blades, generators, nacelles and monopiles for the erection of wind farms onshore and offshore. The tandem lift-assist system Sycratronic is often used for this purpose. In tandem lift mode, two LHM 800 mobile harbour cranes can lift up to 616 t. Heavy duty cranes for offshore applications are able to lift up to 5,000 t and reach a lifting height of 180 m above deck. Thereby the Group’s offshore portfolio meets challenging requirements, such as the provision of diesel or electrical drive units, explosion protected cranes and cranes for ambient temperatures between +40 °C and -50 °C. Liebherr cranes are not only used successfully for the construction of offshore wind turbines, but also on oil and gas platforms, for offshore construction, pipe-laying or subsea operations down to 3,600 m below sea level.