Ehingen/Donau (Germany), June 2015 - Liebherr unveiled a new 250-tonne mobile crane to visitors from all over the world at its 2015 customer days at the manufacturing plant in Ehingen. The LTM 1250-5.1 is now the most powerful mobile crane on 5 axles on the market. It is the third crane model on which Liebherr uses its innovative single-engine concept. In addition to a multi-functional folding jib, a 50 m fixed jib is also available. The Liebherr innovations VarioBase? and ECOmode mean that crane operators can use the new LTM 1250-5.1 with even more safety and efficiency.

The LTM 1250-5.1 is the successor to the globally successful that was the LTM 1220-5.2. In the development of the new crane Liebherr followed the concept of achieving maximum load capacity from the available weight of a 5-axle mobile crane. The result is that the LTM 1250-5.1 is now the most powerful crane in this class in the world. Its load capacity has been increased compared to its predecessor by around 15%-20% whilst the telescopic boom has remained at the same length of 60 m. With lattice extensions the maximum hook height has been increased by a massive 9 m to 110 m.

Liebherr has a particularly wide and variable range of lattice jibs for the new LTM 1250-5.1. The 12.2 m to 22 m folding jib can be extended to up to 36 m with 7-metre sections. The folding jib is attached with a 0?, 22.5? or 45? inclination. The folding jib can be supplied with a hydraulic adjustment system as an option which allows it to luff with a full load between 0? and 45?. The adapter section for the folding jib is used as a 5.4 m erection jib. The pivot point for the folding jib can be raised using up to two straight 7 m lattice sections acting as telescopic boom extensions. These sections and the folding jib extensions can also be used on the Liebherr LTM 1200-5.1 and LTM 1220-5.2 mobile cranes. This is a major benefit for crane operators that use these crane models in their fleet.

One feature that has been unusual in the 5-axle class to date is the possibility to mount a long fixed jib, which can achieve enormous radii, for example over buildings. Liebherr has come up with a particularly smart solution for this. With just one additional TF adapter (connection between the telescopic boom and the fixed jib), a reducer section and a head piece it is possible to achieve a fixed jib up to 50 m in length. The existing telescopic boom extensions and folding jib extensions are used for this purpose. This jib is generally hydraulically adjustable between 0? and 45? and can therefore be used like a luffing jib.

The maximum ballast on the new LTM 1250-5.1 is 88 t with a maximum width of 6.3 m. The base plate weighing 1 t and a 10-t ballast plate are the same width as the vehicle. With up to 68 tonnes of ballast the ballast width is 4.1 m.

VarioBallast is a new feature for Liebherr. The LTM 1250-5.1 can be operated with two different ballast radii: 5.58 m or 4.78 m. Liebherr has designed a solution to adjust the ballast radius particularly quickly and easily. The ballast radius is reduced by 800 mm using standard mechanically swivelling ballasting cylinders. This solution is a major benefit of the new 250-tonne model for use in constricted conditions.