The LTM 1150-5.3: Liebherr’s “jewel” for any crane fleet

liebherr LTM crane

After manufacturing about 1,500 LTM 1130-5.1 mobile cranes, Liebherr has introduced its successor — the LTM 1150-5.3. 

With a maximum lifting capacity of 150 tonnes and a 66 metre telescopic boom, the LTM 1150-5.3 joins Liebherr’s crane range below the 180 tonne LTM 1160-5.2. 

The 10 per cent longer telescopic boom (compared to its predecessor) will hoist on average 15 per cent higher loads with both maximum and part ballast. With this in mind, Liebherr engineers ensured the new crane has the same low gross weight as its predecessor. With an axle load of 12 tonnes, the crane can carry 9 tonnes of ballast on public roads. 

“A flexible all-rounder, the LTM 1150-5.3 will enhance any crane fleet like a jewel. It has the longest boom in this crane class at 66 metres and can compete with crane models in the 200 tonne lifting capacity class. It delivers outstanding lifting capacities when fully raised and at large radii. And it is immediately ready for use once it reaches the site,” said Christoph Kleiner, a sales director with Liebherr. 

“This is because the new 150 tonne crane carries 9 tonnes of a ballast with a gross weight of 60 tonnes. That means it can complete lots of jobs without requiring additional ballast transport vehicles. That saves time and money, and makes the crane even more valuable to crane contractors – hence our slogan: The jewel for your crane fleet.”

Telescopic boom 

Compared to its predecessor, the telescopic boom on the new LTM 1150-5.3 is 6 metres longer. At the same length of 60 metres, the new 5-axle crane can hoist 12 tonnes when fully raised — 1.5 tonnes more than its predecessor. When fully extended to 66 metres, the new crane has a lifting capacity of more than 9 tonnes. Its lifting capacity makes it ideal for erecting tower cranes as well as radio masts. 

As well, lattice extensions allow the new 150-tonne crane to achieve hook heights of up to 92 metres and radii of up to 72 metres. For this, a 7 metre lattice section as a boom extension and a 10.8 to 19 metre double folding jib are used. The latter can be adjusted hydraulically between 0 degrees and 40 degrees.

A 2.9 metre erection jib and a runner, which can be swung to the side, round off the equipment list. Particularly economical, the lattice jibs are compatible for many crane models in the 100 to 180 tonne class within the Liebherr portfolio. 

ECOdrive and ECOmode 

A six-cylinder Liebherr diesel engine provides the drive power for the LTM 1150-5.3. It provides 544 bhp and a torque of a 2,516 Nm. The engine also meets Stage V emissions requirements and can also be configured to comply with Tier 4 or IIIA for low regulated countries. 

The ZF-TraXon gearbox is used to transfer the power to the crane’s axles. ECOdrive delivers enhanced drive properties, which save fuel and reduces noise and carbon dioxide emissions. As well, Hillstart Aid makes starting on gradients easier. 

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Liebherr has continued its single-engine strategy on this crane with a mechanical drive unit for the superstructure. The weight reduction created by the elimination of a superstructure engine from the previous model is used to deliver a longer boom and more lifting capacity. 

The new 150 tonne crane also features ECOmode for crane operations to reduce fuel consumption and emissions of both noise and carbon dioxide. The complete pump drive can be disconnected automatically when the engine is idling and then reconnected by the intelligent controller in a matter of seconds when it is required. Furthermore, the crane controller automatically calculates the right engine speed for the working speed selected, using the control lever to avoid unnecessarily high engine speeds. 

A first for telescopic cranes 

Hook blocks must be heavy to make sure that the hoisting winch spools reliably. At the same time, however, they should be as light as possible for being transported on the crane and for high net loads during hoists. 

Liebherr has designed a completely new range of hook blocks to satisfy the contradicting requirements. The hook blocks feature weight plates that are attached to both sides of the hook block to change the weight, so that it is ideal for the current situation. 

“Our engineers have produced a simple, but brilliant design as it means that operators can react even more flexibly to every job,” Kleiner said.

For example, a three-roller hook block, which previously has weighed about 700 kg in this crane class, now only weighs 500 kg. However, it can be upgraded to 700 kg quickly and easily when necessary. The new system is available for one to seven-roller hook blocks. 

These can be used on cranes with both 19 mm and 21 mm ropes. The weights can be interchanged to ensure simple handling.