Mobile and crawler cranes
4 minutes - magazine 01 | 2025
Compact size, maximum power
Compact, powerful and manoeuvrable – characteristics that perfectly describe the MK 120-5.1, the latest member of the mobile construction crane family.
Addition to the mobile construction crane family
The five-axle machine bridges the gap between the MK 88-4.1 and the MK 140-5.1. Alongside plenty of lifting power, it features a new display and an optional smaller load hook for working in confined spaces. Find out what else the new model can do here.
The five-axle crane is a perfect fit for the tried-and-tested taxi crane concept and can cover several sites in one day.
With a jib measuring in at 52 metres and a maximum lifting capacity of 2,100 kilograms at its jib head, the new MK 120-5.1 delivers impressive performance. The crane marks an expansion of Liebherr’s existing MK portfolio and bridges the gap between the MK 88-4.1 and the MK 140-5.1. The mobile construction crane also impresses with its high manoeuvrability, which enables it to manoeuvre in narrow streets and intersections thanks to its small turning circle.
The new crane is based on the established MK 140-5.1. This is a huge advantage, as crane operators who have already been trained on this model can be deployed on the new crane without extensive additional training.
New crane, new display
The MK 120-5.1 is equipped with the new Liebherr TC-OS display. The TC-OS (Tower Crane Operating System) user interface focuses on ease of use and flexible customisation by the crane operator. Its twelve-inch touch display can be used in split and full screen mode. This means that diverse information can be displayed across different screen areas.
Smaller load hook for optimal load positioning
The MK 120-5.1 can be ordered with an optional smaller load hook. This version really comes into its own on sites with existing buildings where scaffolding is in place and the load has to be moved between the building and the scaffolding. It only takes a few minutes to change the load hook on site. The best thing about it: the smaller load hook can handle the same lifting capacity as its large counterpart.
“Exactly the right crane for our fleet”
The first customers are already full of praise for the latest addition to Liebherr’s mobile construction crane range. “The MK 120-5.1 is exactly the right crane for our fleet. Its jib length and lifting capacity make it ideal for our customers’ construction sites,” says Stephan Zaugg, Managing Director at Zaugg AG Rohrbach (Switzerland). “We are excited to be the first ever customer to acquire the new MK. Reliability, customer service and the great reputation of Liebherr’s mobile construction cranes were deciding factors for our purchase.”
Belgian crane contractor Desutter has also ordered an MK 120-5.1 and decided in favour of the new mobile construction crane during the development phase. The new MK is the ideal addition between the MK 88-4.1 and the MK 140-5 and will be used at Desutter throughout Europe. The jib length of 52 metres, the Load Plus feature and the ability to adjust working heights and support in a variable manner convinced the Belgian company. Alongside the outstanding performance of the MK 120-5.1, the quality and high resale value of the Liebherr cranes played a decisive role. Deliveries will start in summer 2025.
This article was published in the UpLoad magazine 01 | 2025.
