Liebherr has unveiled a new large crawler crane, the LR 1500, which has a maximum load capacity of 500t.
The crane, launched at a 2015 customer event, will be produced at Liebherrâ€™s Ehingen plant where it manufactures mobile tracked and wheeled cranes.
The new crane maintains the standard dimensions and component weights of the 400-tonne class, and hasÂ a 45t transport weight. According to Liebherr, compact dimensions and a low cost of worldwide transport were the main criteria for the design of the new crane.
The central crawler section with turntable weighs 55t, while a removable A-frame allows this weight to be reduced to 45t. Its transport dimension of three metres in width corresponds to the global transport standard.
The craneâ€™s lattice boom has been designed to maximise simplicity by reducing the number of parts and component diversity. The lengths of the boom sections are 6 and 12 metres.
Liebherr is promising enormous hoist heights, with the option to install a 84m luffing jib on the up-to 84m main boom. The 250-tonne jib head on the luffing jib is also used for SL main boom operation. A 400-tonne head is available as standard for the S main boom for heavyweight jobs, which is lighter than the optional 500-tonne head.
Features-wise, the standard base plates on the LR 1500 are 1.5 metres wide, broader than the base plates on 400-tonne class crawler cranes, which drastically reduces ground pressure.
The craneâ€™s engine develops power of 350 kW, which is around the same level as engines on 600-tonne class cranes. The main hoist gear has a line pull of 180kN, enough to handle all hoists up to the maximum load capacity. This makes crane operation easier since it means that there is no need for a second winch for dual operation for heavyweight hoists. A second winch â€“ with a line pull of 125 kN â€“ is only needed if the crane is operated with a runner.
The crane uses 10t ballast plates, which are also used on the existing Liebherr LR 1400/2 and LR 1600/2 machines, resulting in lower costs for crane operators that have several of these cranes in their fleet.
08 Jul 2015 | Stian Overdahl