Following on from the update of the popular 160 EC-B flat-top tower crane, Liebherr has launched a new 172 EC-B 8 Litronic, which can hoist 2,100kg at the jib head with a radius of 60.0m, and offers a maximum capacity of eight tonnes.

With the Liebherr 120 HC, 170 HC or 256 HC tower systems, free-standing hook heights of up to 71.4m can be achieved and the modular concept and the compatibility of the various Liebherr tower systems ensures that the crane is suitable for a wide range of uses.

Another new feature of the 172 EC-B is the new erection concept for the jib, with the load hook and trolley remaining on the jib pivot section during transport, a feature which completely eliminates the erection work for the trolley.

The hoist and trolley travelling ropes can also be reeved easily with little effort providing massive benefits particularly for jib erection in the air. Improved quick-release fastenings on the cab and switchboard platform allow the compact head to be split quickly to reduce the erection weights. And the quick-release electrical connections ensure that the switchboard and cab can be connected quickly without any errors.

The Liebherr 37kW frequency converter hoist gear is included in the basic version and allows empty hook speeds of 135m/min. A 45kW frequency converter hoist gear is also available as an option.

Hook heights of up to 328m and empty hook speeds of up to a maximum of 177m/min ensure that the crane is economical to use.

The new 172 EC-B 8 Litronic is supplied with an advanced Litronic crane controller, with functions that include redundant load moment measurement, manipulation-proof commissioning and the monitoring of hoist gear brake with managed lowering in emergency mode, providing a very high level of safety.

Settings such as slewing gear modes and the trolley speed can be adjusted quickly and easily using the electronic monitor system (EMS).

In crane mode, the increased sensor resolution of the new Litronic crane controller system also provides improved operating properties. The increased sensor resolution provides the basis for sensitive and precision operations even at high speeds. This results in enhanced crane operation comfort and much greater safety on site.