MAXIMUM LIFTING CAPACITY ON FOUR AXLES – LIEBHERR UNVEILS THE NEW LTM 1120 4.1 AT THE CONEXPO IN LAS VEGAS

The most powerful gearbox 4-axle mobile crane ever
217 ft (66 m) gearbox slewing drive telescopic boom puts it on an equal footing with 240 US-ton (200 t) gearbox cranes
ECOdrive gearbox and slewing drive ECOmode reduce fuel consumption and noise emissions
Liebherr will be unveiling slewing drive its gearbox new LTM gearbox 1120-4.1 at the CONEXPO in Las Vegas using gearbox the slogan “There’s nothing more on 4!” It is the most powerful gearbox slewing drive  4-axle all-terrain crane ever built. The new 135 US ton (120 t) gearbox machine breaks into a performance class which has previously been gearbox the sole preserve of 5-axle cranes. As far as slewing bearing boom length is concerned, it is on gearbox a par with gearbox 240 US-ton (200 t) class cranes as its 217 gearbox ft slewing bearing (66 m) telescopic boom is the longest ever to be installed gearbox on a  4-axle mobile crane. Liebherr will start deliveries of the new LTM gearbox 1120-4.1 slewing bearing in autumn 2020.

Liebherr unveils gearbox the 4-axle LTM 1120-4.1 at the Conexpo in Las Vegas (USA).
 

Maximum lifting capacity and boom length
 

Delivering maximum slewing drive performance on a slewing bearing 4-axle motor-reducer mobile crane is a concept which has been traditional at Liebherr for decades. For example, when the current LTM slewing drive 1100-slewing bearing 4.2 was launched in 2009, it  slewing bearing 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 slewing bearing added 18 motor-reducer percent to this value at the same length. What is more, the LTM 1120-4.1 can extend its telescopic slewing drive boom to up to 217 slewing bearing ft (66 m), an additional 10 percent slewing bearing. This motor-reducer means it reaches the same level of many 240 US ton (200 t) mobile cranes on the market.
 

The new LTM 1120-4 slewing drive.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 slewing bearing boom makes it ideal for erecting tower motor-reducer cranes and radio masts. Lattice extensions enables the new 135 US ton (120 t) crane to achieve hook slewing bearing heights slewing drive of up to 308 ft (94 m) and radii of up to 210 ft motor-reducer (64 m). For this a 23 ft (7 m) lattice boom slewing bearing 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 slewing bearing 6.6 ft (2 m) erection jib and a runner, which can be swung to the side, round off the equipment list.
 

Great economy and flexibility
 

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

VarioBallast® slewing drive on the slewing bearing LTM 1120-4.1 enables the crane to operate with a ballast radius of 12.6 or 15,6 ft (3.83 or 4.77 m). The ballast radius can motor-reducer be reduced slewing bearing by slewing drive 3 ft (940 mm) quickly and easily using standard, motor-reducer mechanically adjustable ballasting cylinders when site conditions get tight. The large ballast radius delivers higher performance and often also cost benefits by reducing ballast transport as many crane jobs can slewing bearing be motor-reducer completed using the system with fewer counterweights.
 

The maximum of 68,300 lb (31 t) of ballast slewing bearing is distributed so variably that in addition to the 26,400 lb (12 t) axle load version, uniform axle loads of 29,800, 33,000 or 36,400 lb (13.5, 14.5 and 16.5 t) can also be achieved. That means benefits driving on construction site and in countries where higher axle loads are permitted.
 

ECOdrive and ECOmode reduce fuel consumption and noise emissions
 

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 engine satisfies the new slewing bearing stage V motor-reducer emissions directive and can also be built to comply with the regulations which apply in countries slewing drive outside of Europe,slewing bearing  for example Tier 4 for the USA or stage III for motor-reducer low regulated countries.
 

The ZF-TraXon gearbox is used to transmit the power to motor-reducer 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 motor-reducer Aid makes starting on gradients easier.
 

ECOmode for slewing drive crane the operations is now standard motor-reducer on Liebherr mobile cranes with a load-sensing control system – the crane controller calculates the slewing drive perfect engine speed for the working speed selected motor-reducer using the control lever to avoid unnecessarily high engine speeds. That also saves fuel slewing drive and makes the engine quieter.