Details

Category: EQUIPMENT

Published: 05 March 2020

Delivering maximum performance on a 4-axle mobile crane is a concept which has been traditional at Liebherr for decades. For example, when the current LTM 1100-4.2 was launched in 2009, it set new standards in the 4-axle class with a lifting capacity of 22,490 lb (10.2 t) on its 197 ft (60 m) telescopic boom. The new 135 US ton (120 t) crane has added 18 percent to this value at the same length. What is more, the LTM 1120-4.1 can extend its telescopic boom to up to 217 ft (66 m), an additional 10 percent. This means it reaches the same level of many 240 US ton (200 t) mobile cranes on the market.

The new LTM 1120-4.1 delivers outstanding lifting capacity values, particularly with the boom fully raised. Its lifting capacity of 19,800 lb (9 t) on the 217 ft (66 m) telescopic boom makes it ideal for erecting tower cranes and radio masts. Lattice extensions enables the new 135 US ton (120 t) crane to achieve hook heights of up to 308 ft (94 m) and radii of up to 210 ft (64 m). For this a 23 ft (7 m) lattice boom extension is installed as well as a 35 to 62 ft (10.8 to 19 m) double folding jib, which, as an option, can also be hydraulically adjusted between 0° and 40°. A 6.6 ft (2 m) erection jib and a runner, which can be swung to the side, round off the equipment list.   

The new LTM 1120-4.1 can tackle jobs which normally would require a 5-axle crane, eliminating all the logistics work needed for the larger model. Because a 4-axle crane delivers benefits in terms of licensing and route permits, it can tackle jobs faster and with greater flexibility. The design of a 4-axle crane also enables it to work where there is insufficient space for larger cranes. On constricted sites, in particular, Liebherr’s VarioBallast^® and VarioBase^® innovations deliver enhanced performance, flexibility and safety for this new crane model.

A six-cylinder Liebherr diesel engine in the undercarriage, which develops 330 kW / 449 bhp and torque of 2,335 Nm provides the LTM 1120-4.1 with all the power it needs.

The ZF-TraXon gearbox is used to transmit the power to the crane's axles. The ECOdrive has proven its value over several years – it delivers enhanced drive properties which both save fuel and reduce noise. Hillstart Aid makes starting on gradients easier.