Liebherr will display a selection of high performance components for wind-power systems in the East Wing of the convention center, Booths 10450 and 10549. Visitors will also see Liebherr gear-tooth milling and shaping machines for producing transmission and gear systems in the wind power sector, as well as the range of cranes for erecting wind power systems.
The company is a partner when it comes to the construction of wind farms with earthmoving equipment and cranes. Representative of this series, and at WINDPOWER 2010, is a model of the mobile crane LTM 11200-9.1. As well as telescopic mobile cranes, Liebherr can also provide lattice-boom mobile cranes and crawler cranes to erect wind power systems, in a variety of performance classes. The company keeps pace with development of more powerful and efficient systems, and increasingly high masts, by offering cranes with improved performance and new jib systems matched to meet the needs of the wind-power industry.
The company also has solutions for erecting wind power systems at sea, such as diesel-operated or electrical drive units, explosion-protected cranes or protection-zone cranes, and cranes for ambient temperatures to 50°C and special hoisting situations at altitudes of up to 2,000 m above sea level.
Company cranes are equipped with slewing systems consisting of large roller bearings and drive units of its own development and production. Know-how acquired over decades in the components sector has been put to use now for some 15 years by the wind-power industry as well, in the area of rotor blade and azimuth adjustments.
The company also supplies bearings as well as drive units and controls. For instance, a powered rotor-blade-adjustment system consisting of the Liebherr DAT 300 planetary gear and a two-row interior-toothed KUD 128 four-point bearing will be on display. A variety of raceways and surface coatings will be presented by way of a sectional model of a four-point bearing with an outside tooth arrangement.
In the transmission and gear sector, the DAT 250 rotary drive with angle transmission and the DAT 400 will represent the range available, which can be adapted to individual specifications. The DAT 250 on display is for blade adjustments on a 2 MW turbine. In addition, the DAT 400 is for azimuth adjustments on a 3 MW system. It is an efficient performer while still featuring a compact design combined with low weight.
Teeth arrangements on the large roller bearings, gears, and transmissions are prepared by Liebherr on teeth milling and shaping machines of its own production.
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