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Liebherr extends range of telescopic crawler cranes

June 25 - Liebherr is extending its product range of telescopic crawler cranes and says its new LTR 1220 offers a maximum load capacity of 220 tonnes and a telescopic boom 60 m long, adding to a product line which has variants with load capacities of 60 a

Liebherr says that the LTR 1220 combines the advantages of a telescopic crane with those of a crawler crane. The crawler travel gear provides excellent off-road capacity and superb manoeuvrability, as well as allowing the crane to travel under full load. The advantages of a telescopic crane over a lattice boom crane are the short set-up times, easier transport, and the variability of the boom system. The telescopic boom is extended or retracted fully automatically and rapidly to the desired length, allowing it, for example, to pass easily beneath obstacles. The LTR 1220 also provides the advantage that heavy loads can be telescoped with the boom, which in principle is not possible with lattice boom cranes.

As a crawler crane, unlike a mobile crane, does not need to be supported, it can be rapidly set up on site and can go into action immediately.

The LTR 1220's 60 m telescopic boom is derived from the tried and trusted LTM 1220-5.2 mobile crane, and with the Liebherr Telematik telescoping system it can be extended fully automatically to the desired length. The telescopic boom can be extended by a biparted swing-away jib, 12.2 to 22.2 m long, which can be lengthened still further by means of two 7 m lattice sections. As well as this, a 7 m lattice section is also available, which is fitted between the telescopic boom and the swing-away jib, in order to raise the connection point of the jib, capable of being luffed by up to 45 degrees. As an option, the swing-away jib can also be adjusted hydraulically. Under full load, the jib can be moved between 0 and 45 degrees.

Operators of the LTM 1220-5.2 mobile crane can also use existing equipment elements on the new 220-tonne telescopic crawler crane.

The travel gear of the LTR 1220 can be hydraulically telescoped out from the crawler carrier width of 4.5 m to the intermediate width of 5.88 m or the maximum width of 7.25 m.

One main area of use for the LTR 1220 telescopic crawler crane is the installation of prefabricated components. With an erection jib 3.4 m long and the second hoist gear, installation work can be carried out in two-hook operation. As well as this, it is ideally suited as an auxiliary crane in the installation of windpower systems, and for the handling of windpower components. The new LTR 1220 also provides major advantages on long-term construction sites in the energy sector or on infrastructure projects.

The new 220-tonner was presented to the public for the first time during Liebherr's customer open days at Ehingen, Germany.

www.liebherr.com

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