Liebherr has boosted its mobile construction crane range with the MK 120-5.1, a five-axle machine that expands its existing MK portfolio and bridges the gap between the MK 88-4.1 and the MK 140-5.1.

Alongside abundant lifting power, it features a new display and an optional smaller load hook for working in confined spaces, says the multinational equipment manufacturer, which marks its 75th anniversary this year.

With a jib measuring in at 52 m and a maximum lifting capacity of 2,100 kg at its jib head, the new MK 120-5.1 delivers impressive performance. One of the mobile construction crane’s key advantages is its agility; its small turning circle facilitates site access via narrow streets and intersections, it adds.

The new crane is based on the established MK 140-5.1. Crane operators who know how to operate this model can work with the new one without extensive additional training.

The MK 120-5.1 is equipped with the new Liebherr TC-OS (Tower Crane Operating System) display. “The TC-OS user interface focuses on ease of use and flexible customisation by the crane operator,” explains a spokesman for the company. “Its 12-inch touch display can be used in split and full screen mode. This means that diverse information can be displayed across different screen areas.”

The new MK 120-5.1 delivers impressive performance.

The display is set to replace the existing version in all mobile construction cranes by the end of 2025.

The MK 120-5.1 can be ordered with an optional smaller load hook.

“This version 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 smaller load hook can handle the same lifting capacity as its large counterpart and will soon be available for all Liebherr mobile construction cranes,” he says.

The first customers are already full of praise for the latest addition to Liebherr’s mobile construction crane range, according to Liebherr.

“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 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.”

A company from Belgium has also already put in an order for the MK 120-5.1. Deliveries will start in summer 2025.