Equipment focus: Liebherr LTM 1750-9.1 mobile crane

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  • Plant & Equipment

Kran Saller's Liebherr LTM 1750-9.1 mobile crane in action. Kran Saller's Liebherr LTM 1750-9.1 mobile crane in action. Kran Saller's Liebherr LTM 1750-9.1 mobile crane in action.

Lifting components of up to 61 tonnes to a hook height of 90 metres, a Liebherr LTM 1750-9.1 mobile crane recently helped a German company erect five wind turbines in five weeks.


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The wind farm in Dagebüll, Germany, near the Danish border, is being built by Kran Saller of Bavaria.

Kran Saller says that the LTM 1750-9.1, which it bought in 2014, "has already excelled on many occasions with its high capacity and efficiency for the erection of wind turbines".

The 9-axle mobile crane has a maximum hoisting height of 154 metres and a maximum radius of 112 metres.

Each of the wind turbines manufactured by Senvion has a capacity of 3.4 megawatts and consists of seven components.

"The heaviest component at 61 tonnes net weight was the rotor star which had to be installed at a hub height of 80 metres," Liebherr says. "The LTM 1750-9.1 hoisted this load to a hook height of 90 metres with a radius of 20.5 metres.

"To tackle this job the 750-tonne Liebherr mobile crane was equipped with telescopic boom guying, a 15-metre V2 telescopic boom extension, a 35-metre luffing jib and 144 tonnes of ballast."

 

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