03.10.2007
Terex Demag hands over world's largest crawler crane
The Terex Demag CC8800-1 Twin - the world's largest mobile crawler crane - was handed over to its new owner Al Jaber at the official ceremony yesterday.
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The CC8800-1 Twin
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With a lift capacity of 3,200 tonnes the CC8800-1 Twin claims to be the largest mobile crane in the world
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(R-L) Steve Filipov and Alexander Knecht hand over the keys of the machine to Alex Mullins of Al Jaber Heavy Lift and Transport
Based on the CC8800-1, the Twin utilises a double booms configuration increasing its capacity to 3,200 tonnes. Operating as a pick and carry crawler crane with its 3,200 tonnes lift capacity and a maximum load moment of 44000 metre tonne, the new unit offers considerable time and space requirements when compared with ring lift cranes and jacking towers.
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A huge machine equals a huge model - this stood about 3 metres tall.
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Steve Filipov
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Chairman of the Terex -Demag board Alexander Knecht
With a cost of between €22-25 million new owners Al Jaber Heavy Lift & Transport have been working with Terex Demag on the units' development for several years and are very pleased with the end result.
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The view from the cab of the CC8800-1 Twin
At the ceremony, the unit which weighs 3,200 tonnes was rigged with a 68 metres of main boom.The main boom can be up to 117 metres long with a luffing jib of up to 117 metres giving a maximum hook height of more than 235 metres.
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1750 tonnes of counterweight
The crane's modular build means that no component is wider than 3.5 metres or has a transport weight of more than 40 tonnes resulting in cost-effective transportation anywhere in the world.
For a full report see the next issue of Cranes & Access.
I wonder how the ground bearing pressures compare to the other heavy lift crawlers that have 4 or 8 tracks? It seems as tho the CC8800-1 Twin's may be very favorable, if the rearward moment was big enough, because of the radical extension length of the bridge to the counterwrweight wagon. At a certain point in rearward moment the tipping axis might not be so heavily loaded as it might seem for only 2 crawlers. I could be way off base here but just a thought.