The Liebherr LR 1200.1 unplugged and the LR 1250.1 unplugged are the world’s first battery-powered crawler cranes.
Both crawler cranes are powered by electric engines with a system performance of 255 kW.
According to Liebherr, there is no compromise in terms of performance or availability when compared with the conventional crawler crane versions.
The LR 1200.1 unplugged delivers a maximum lifting capacity of 200 tonnes, while the LR 1250.1 lifts 250 tonnes.
Thanks to electric power, the new machines are emissions free and generate a very low noise level. Eliminating emissions and reducing noise is a huge advantage in areas sensitive to noise and also for the people working on the jobsite.
“Especially the year, 2020 has shown that one must be open-minded and bold to break new ground,” said Gerhard Frainer, managing director for Sales at Liebherr-Werk Nenzing GmbH.
“With our unplugged cranes, we offer our customers an alternative drive design. As we have already seen with the LB 16 unplugged, the first battery-powered drilling rig, the strategy is a complete success. Strict requirements regarding environmental sustainability in tenders for construction projects increase the demand for advanced technologies. For us, it was clear that we extend and successfully establish the design in further product groups.”
The capacity of the battery is designed for four hours of lifting operation. In accordance with their name, the cranes can be operated without a cable, thus “unplugged” thanks to the battery-electric drive design. As well, the electric crawler cranes may be recharged as they operate.
The electric crawler cranes can be recharged by a conventional jobsite electric supply (32 A, 63 A) in four and a half hours. Using a 125 A supply, the crawler can may be recharged in as little as two hours and 15 minutes.
The blue accent in the colour composition, which lends the distinctive look to the unplugged series, symbolizes the electric solution representing an advanced technology. The unplugged cranes achieve the best possible combination of operator benefit, efficiency and environmental sustainability.