Liebherr the heavy equipment company have developed a new all terrain nine axle mobile crane that is the worlds most powerful. The Liebherr LTM 11200-9.1 has a maximum lifting capacity of 1,200 tons with its powerful 100 metre (328 ft) telescopic boom. The boom is in eight parts and is longer by 16 meters and stronger than the previous worlds greatest mobile crane the 1998 model LTM 1500-8.1Â which had a boom of only 84 meters.
With the worlds strongest mobile boom and with the worlds longest reach of such a crane, the Liebherr LTM 11200-9.1 is certainly out to impress.
The 100 metre boom is constructed from a strong base with seven highly extendable telescopic arms. The boom can be fully automatically positioned and then locked into place using the tried and tested rapid action TELEMATIK telescopic adjustment system. A very powerful four part short telescopic boom can also be implemented with the four inner telescopic parts extended. This method has already been tried, tested and approved on the LTM 1500-8.1. A radius of 55meters is attained with the help of a 3 meter lattice head section.
There are quite a few lattice extension sections available for the LTM 11200-9.1. The lifting fly jib can be extended out to reach 126 m (413ft) with a lifting height of 170 m (558 ft).
The booms Y-shape guy steering system offers fantastic load capacity which can be used on the four or eight part telescopic boom.
- Max. lifting capacity: 2,645,000 lbs at 8 ft radius
- Telescopic boom: 60 ft – 328 ft
- Lattice jib extension: 79 ft – 413 ft
- Carrier engine/output: Liebherr, 8-cylinder, Turbo-Diesel, 500 kW
- Crane engine/output: Liebherr, 6-cylinder, Turbo-Diesel, 240 kW
- Drive/steering: 18 x 8 x 18
- Travel speed: 47 mph
- Operational weight: 211,640 lbs
- Total counterweight: 445,000 lbs   Â
The mobile crane is powered by a Tier 3/Stage III compliant six cylinder water cooled diesel engine that produces 671 Hp at 1900 rpm, the cranes boom is diesel-hydraulic powered with full electronic control supplied by LICCON.
The nine heavy duty truck axles are equipped with hydro-pneumatic auto self leveling suspension and loads are equalized between pairs of axles. The active speed dependant rear axle steering that was developed by Liebherr, is integrated into the chassis for maximum efficiency in the control of this large vehicle when out on the roads. Fitted with the much respected German ZF automatic transmission, the gear box has 12 forward and 2 reverse gears. The wheels on the first five axles on the front are powered, whilst the rest trail, but all wheels are steered.
The European Association of Heavy Haulage, Transport and Mobile Cranes presented the Development Award 2007 to Mr Mario Trumzer from Liebherr for this record breaking mobile crane.  The Development Award was presented by Mr Martin Ainscough of Ainscough cranes.
