Three New Features Raise Liebherr LTM 1110-5.1 to LTM 1110-5.2

Nov. 25, 2021 – The five-axle 125-USt Liebherr LTM 1110-5.1 all-terrain crane is a best-seller with its powerful 197’ telescopic boom and variable axle loads for maximum mobility.

But Liebherr’s three recent improvements to the crane let it offer even more benefits.

Liebherr’s recent upgrades to the Liccon3 control system, a new operator’s cab, and a ZF TraXon Dynamic Performance gear box have made a good thing better and have raised the crane’s version number (the last digit in the model number) from .1 to .2.

Liccon3 Controls

The Liccon3 (Liebherr Computed Control) control system features the Liccon system’s time-tested control features, but has completely new software, programming language, a faster databus, significantly more storage space, and more computing power.

Nikolaus Münch, head of Liebherr Ehingen’s control system department, said that Liebherr felt it was important that crane operators familiar with Liebherr cranes could get used to the new Liccon3 control system quickly and easily.

However, Münch noted, Liebherr had to also future-proof the system, as microelectronics are progressing quickly. Since the current Liccon2 control system is reaching the limits of its capacity, Liebherr has developed Liccon3. “Complex applications, such as VarioBase, can now be developed more frequently in the future,” said Münch.

Many parts of Liccon3 are similar to he current Liccon2 control system. Time-tested hardware components, such as the BTT remote control terminal, have been included. The touchscreen on the new, large display in the crane cab makes the crane even easier and more comfortable to control. The way in which information is shown has also been simplified.

In addition, Liccon3 cranes are also prepared for telemetry and fleet management systems as standard. In the future, crane contractors will be able to view and evaluate all the relevant data using the MyLiebherr customer portal.

Award-Winning Chassis Cab

Liebherr’s new driver's cab earned the 2020 American Good Design award 2020 in the Transportation category.

Liebherr unveiled its new driver's cab at Bauma 2019 to get customer feedback early the cab’s development, then included many of those ideas in the finished cab.

Liebherr is introducing the new cab at the same time as the Liccon3 control system. The modern design features premium materials and a host of improvements for the driver. They include the new multifunction steering wheel, side roller blind on the driver’s door, improved instruments and modules, and new displays.

Options, such as the central locking system with remote key, the cool box, and tire-pressure monitoring deliver additional comfort.

A completely new automatic climate control system in both the driver’s and operator’s cabs guarantees comfortable working conditions. A sun sensor detects strong sunshine and automatically adjusts. In addition to the standard radio with hands-free facility, a double DIN radio with extended functions is optional.

Münch believes that the revised lighting system is another highlight. “LED technology is a real plus as a result of its long service life,” he said. “It will last for many more hours of service and also provides better lighting.”

The lighting packages for the crane cabs, the superstructure, the rear of the vehicle, the front headlights and the telescopic boom and lattice jibs have been improved and now feature LEDs.

ZF TraXon DynamicPerform Gearbox

The innovative DynamicPerform clutch module delivers almost zero-wear starting and maneuvering for the modular ZF TraXon gearbox without overheating.

The new clutch module uses an oil-cooled plate pack that runs in oil. The clutch oil dissipates friction heat and gets rid of it through the vehicle’s cooling system.

The drive system delivers almost wear-free maneuvering while the clutch protection function prevents overheating in extreme load cases. That prevents downtimes and helps significantly extend the service life of the drivetrain.

Liebherr partnered with ZF in development of TraXon DynamicPerform and its integration into mobile crane drivetrains. Josef Schick, head of Liebherr testing, said that collaboration with ZF and intensive testing have made the new gearbox now ready for widespread use. “Overall, we can safely say that there are worlds of differential between a dry clutch and the new wet starting clutch,” Schick said.

Initially, Liebherr plans to install DynamicPerform in its 5-axle mobile cranes on a step-by-step basis. On mobile cranes with six or more axles, Liebherr intends to continue to use the ZF 12-speed TraXon Torque gearbox with starting converter, which in addition to zero wear maneuvering, also delivers an increase in torque.