13/07/2006 - 05:00 am

Liebherr Launches Five-Axle All-Terrain Crane

At its Customer Days, held June 28 and 29 in Ehingen, Germany, Liebherr-Werk Ehingen launched its new five-axle 143-ton LTM 1130-5.1 all-terrain crane • the fifth newly developed five-axle model introduced by Liebherr in the last two years.

The LTM 1130-5.1 features a 197-foot telescopic boom that can extend even more with a 35- to 62-foot swing-away jib and two 23-foot lattice sections. The swing-away fly jib has hydraulic adjustment as an option.

With a maximum axle load of 13 tons, this crane carries up to 10 tons of ballast and is capable of performing a variety of operations without any additional ballast. With a 40-foot-long, 9-foot-wide chassis, the LTM 1130-5.1's compact dimensions allow it to maneuver in confined spaces. Double telescoping outriggers provide a support base width of 25 feet, and in cramped conditions, the crane can also be operated with a support base width of just 16 feet.

Air-operated disc brakes ensure that the LTM 1130-5.1 also operates safely and economically. They offer considerably improved braking performance, which are not impaired even at high braking temperatures. Compared with conventional drum brakes, they have a significantly longer useful working life. Other advantages include easy-to-change brake linings, which are also fitted with wear indicators.

The new LTM 1130-5.1 also features Liebherr's active speed-dependent rear axle steering, which has proved extremely successful and considerably reduces tire wear. The operator has five steering programs to choose from for different operating situations.

The Liebherr six-cylinder inline engine in the undercarriage delivers 503 hp at 1,900 rpm. It has a maximum torque of 2,355 Nm at between 1,100 and 1,500 rpm. Power transmission to the crane axles is via the 12-speed ZF AS-Tronic gearbox. An intarder is integrated as standard in the gearbox as a non-wearing permanent brake. A two-stage transfer case enables the crane to operate at minimal crawling speeds when maneuvering.

The Liebherr four-cylinder inline engine in the crane superstructure has an output of 197 hp at 1,800 rpm and a torque of 920 Nm at 1,100 to 1,500 rpm. Load-sensing electric controls in the hydraulic system enable sensitive control of the crane's working movements. Up to four different movements can be carried out simultaneously. Depending on the nature of the hoisting task and the crane operator's requirements, torque can be switched easily from open to hydraulically locked.

The cabs for both driving and crane operation provide the operator with a comfortable and ergonomically optimized workplace. A catwalk that can be extended to the side is provided for easy, safe access to the superstructure cab. The cab can be tilted to the rear to an angle of 20 degrees to improve visibility. Cab options include air conditioning, work area limitation, and supporting force indicators.

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