The chassis of the LTM 1160-5.1 is 12.3m long, which is said to permit a turning-circle radius of 10.6m, and the new crane is equipped with Liebherr’s active rear-axle steering. All five axles are steered, so that none needs to be raised for diagonal travel. There are six steering programs.

A Liebherr turbocharged six-cylinder inline engine with a data bus control system drives the LTM 1160-5.1. This new-generation Liebherr engine has an output of 370kW / 503hp at 1,900 min-1, and a maximum torque of 2,340Nm between 1,200 and 1,500 min-1.

The 62m telescopic boom comprises the pivot section and five telescoping sections extended and retracted by the TELEMATIK telescoping system. A 7m long lattice boom extension provides a raised pivot point for the 12.2m to 22m folding fly jib, which can be lengthened to 36m by installing two 7m intermediate sections. The LTM 1160-5.1 can then reach heights of up to 93m, and working radii of up to 70m. The folding fly jib can be attached at an angle of 0°, 22.5°, or 45°. Another option is hydraulic luffing of the fly jib between 0° and 45°, if necessary at full load. The bottom section of the fly jib can be used as a 5.4m long erecting jib by installing a set of pulleys available as an optional extra.

Liebherr is also introducing what it says is the most powerful two-axle crane on the market – the LTM 1040-2.1 – which has a maximum load capacity of 40t. The 35m long telescopic boom is 5m longer than that on the LTM 1030-2.1, and average load capacity is said to be approximately 8% higher, although at steep boom angles the additional load capacity can be as high as 25%, says Liebherr.

The four-section telescopic boom on the LTM 1040-2.1 is extended and retracted by a hydro-mechanical system. A single-stage, double-acting hydraulic ram, and a double rope and pulley mechanism are designed to extend the boom steplessly to the desired outreach, even with a suspended load. A 9.5m long folding fly jib is available for attachment to the boom. With it, the new 40t crane can reach lifting heights of up to 45m, and working radii of up to 39m. The folding fly jib can be attached at the customary angles of 0°, 20°, 40°, or also 60°.

The LICCON control system on the LTM 1040-2.1 includes a diagnostic system that monitors many functions. Up to four working movements can be made simultaneously, and controlled by the ‘load sensing’ hydraulics, says Liebherr.

The turbocharged inline six-cylinder diesel engine develops 205kW / 278hp at 2,200 min-1. This engine complies with the latest emission limits according to 97/68/EG Stage 3 and EPA/CARB Level III. Its power is transmitted to the crane’s axles via an automatic power-shift gearbox with integral transfer box.

Both axles, which are driven and can be steered, can be turned in the same direction for diagonal travel movements. An anti-lock braking system and wheelslip control are standard.

Finally, the Liebherr EC-B Flat-Top tower crane makes its debut at Intermat. This series comprises 13 designs with ratings from 50 to 280tm. The central element of Series EC-B is a head, into which the hoisting and slewing gear, the complete ball slewing ring support, the switchgear cabinet, and the crane cabin are integrated.

On the 71 EC-B 5, for example, this head is 2.51m high, with a total weight of 3.3t, and can therefore be carried vertically on a suitable truck.

Liebherr adds: “To simplify erecting work, the connections to the jib and counter-jib have tapering slots. The two connecting plates are designed for easy one-person assembly.”

The new head is pre-assembled before delivery, and can, says Liebherr, be installed with a single crane lift. The modular cabin can be attached and detached at the quick-release fastenings. Options include air conditioning, and the EMS electronic monitoring system.

The EC-B crane series has been designed for loading into standard containers. For optimum transport by truck, new tower lengths of 3.9m, 5.85m, and 11.7m have been developed. As a result, only two trucks are needed for transport of the complete upper section of a 71 EC-B 5 crane, including counterweights and two 11.7m long tower sections.