Liebherr gets compact with new mobile crane, as far as cranes go

  • 08-Apr-2010 09:57 EDT
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Liebherr's just-launched three-axle LTC 1045-3.1 is equipped with compressed-air disk brakes that, compared to conventional brake drums, provide a "perceptibly better" braking effort.

At Bauma this year Liebherr launched its three-axle LTC 1045-3.1, a new compact mobile crane that has a maximum lifting capacity of 45 t (50 ton) and supplements its range of all-terrain cranes in the three-axle class.

The LTC 1045-3.1 functions with the traditional travel characteristics of all-terrain cranes and is particularly suited for operations in very confined spaces, such as cranes working in industrial production halls.

For road travel the crane cab can be moved to the front of the vehicle on a telescopic arm and fixed in place by mechanical means, which provides the driver with increased situation awareness via "the best possible view of the highway." With what Liebherr describes as an "entirely new concept of the movable cab," the company believes it has solved the problem of the restricted view with city cranes. The view is not obstructed over the right side of the vehicle either, because the lower edge of the telescopic boom remains above the driver’s line of sight.

The turning radius of the LTC 1045-3.1 is just 7.4 m (24 ft). In particularly restricted conditions on a construction site, the boom can be tilted upward, with the result that the turning radius is reduced to 5.9 m (19 ft) as the carrier becomes the only determinant factor. The crane’s compact design enables the crane to drive through hall doors that are just 3 m (10 ft) high.

Designed as an "all-in-one" crane, the new LTC 1045-3.1 features an overall weight of 36 t (40 ton). That total consists of an axle weight of 12 t (13 ton), which includes the complete counterweight of 6.5 t (7 ton), the double swing-away jib, 16er tires, the Telma eddy-current brake, 6x6 drive, and a hook block. It also features a ZF automatic transmission with a torque converter for fine-sensitivity movement on site and 6F/2R speeds. All axles are steered, with axle 1 and 3 driven with lockable differential gears. On the road, it can attain speeds up to 80 km/h (50 mph).

Liebherr says the LTC 1045-3.1 provides high-load capacities over the entire operating range, values that lie in the range of 50-t (55-ton) cranes, under road travel conditions, with a total weight of 36 t (40 ton), which means, according to Liebherr, "that the [crane] is substantially more powerful than comparable city cranes available on the market."

It is powered by a six-cylinder Mercedes-Benz water-cooled OM 906 LA engine that offers 240 kW (326 hp) at 220 rpm. Maximum torque is 1300 N·m (90 lb·ft) at 1200 rpm.

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