Liebherr adds to ranges

By Lindsay Gale14 May 2012

Liebherr has introduced a material handler as well as two new excavators. All three machines feature EU Stage 3B compliant engines together with a range of innovative technology.

Liebherr's LH 80 M Litronic is the first model in a new generation of mobile machines developed by the company specifically for material handling applications. Powered by a 230 kW (308 hp) Liebherr engine, the machine features an energy recovery cylinder (ERC) as standard.

Mounted between the two hoist cylinders and filled with nitrogen gas, the ERC works by storing the energy released as the working equipment is lowered. During the next lifting movement, the nitrogen expands and the stored energy is added to the power exerted by the hoist cylinders.

Liebherr said the ERC could contribute up to 80 kW (107 hp) of additional energy, meaning the machine requires less power from the diesel engine, reducing fuel consumption.

The 24 tonne R 924 crawler excavator has a 115 kW (155 hp) Liebherr engine that complies with the EU emissions legislation by using a particulate filter and active regeneration. The upper carriage layout is entirely new, and is said to make maintenance work safer and more efficient. Maintenance points have been brought together and can be reached from ground level.

Like all models in Liebherr's latest crawler excavator series, the R 924 features integrated Liebherr excavator system technology for smooth and responsive operation. This technology is based on Positive Control hydraulics with a Liebherr electronic control system, and makes optimal use of the available energy for both individual and combinations of movements.

The manufacturer has also developed a new 50 tonne class tracked excavator - the R 956, which has an engine output of 240 kW (322 hp). The range of undercarriage options available has also been enlarged. The LC and LC-V are typical undercarriages for earthmoving applications, for instance, and the track width can be adjusted mechanically on the LC-V chassis in order to remain within the critical transportation width of 3 m (10 ft) in some countries. In addition to that, two heavy-duty undercarriages - HD and S-HD - are also available for hard quarry applications.

All Liebherr's new tracked excavators are also equipped with the LiDAT data transmission system, which provides remote access to specific machine data such as fuel consumption or service intervals.

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