Liebherr expands its portfolio for soil mixing applications: mixing cutter LMC 80

The mixing cutter LMC 80 can be applied for all types of mixable soil to install load-bearing or sealing elements for ground improvement. The four cutting wheels are driven by a maximum torque of 2x 80 kilonewton metres and achieve a maximum rotational speed of 30 revolutions per minute, depending on ground conditions.

Liebherr provides both the mixing cutter LMC 80 and the carrier machine for the application. Using an extension linkage, the compact piling and drilling rig LRB 23 can produce ground mixing elements down to depths of 36 metres, the larger LRB 355 down to 40 metres. Both versions can create panels with cross sections ranging from 2,800 by 500 to 1,000 millimetres – depending on site requirements and ground conditions. For flexible use, the LMC 80 can be swivelled by 135 degrees round the mixing axis without moving the leader. The control system for the mixing cutter is integrated into the familiar operating concept of the carrier machine.

The verticality measurement displays information in real-time on the operator’s monitor if the mixing element deviates from the vertical. This ensures the highest level of precision during operation. Thanks to the LIPOS positioning system and state-of-the-art satellite technology, operators can align the LMC 80 with pinpoint accuracy. MyJobsite, the digital solution for deep foundation applications, enables relevant process, machine, jobsite and positioning data to be recorded, displayed, analysed, managed and evaluated.

Versatile usage

The LMC 80 is mounted on the carrier machine whilst lying flat. This saves time and is particularly safe since there is no work carried out at a height. The carrier machine’s crowd winch lifts the mixing unit into the working position.

To convert the LRB 23 or LRB 355 for piling or drilling applications, the mixing tool is simply replaced with a rotary drive, hammer or vibrator. Customers benefit from requiring just one carrier machine to carry out all common applications in deep foundation work and profit from the all-round qualities of the LRB series.

From an economic point of view, cutter soil mixing with the LMC 80 has further advantages compared to other applications for ground improvement. Only a few building materials need to be delivered and no excavated material must be transported, since only the existing soil is mixed with the binding suspension. Liebherr has expanded its portfolio with the mixing cutter LMC 80 to make a valuable contribution to a more environmentally friendly solutions and to offer noise-reduced and low-vibration processes in line with market requirements. The model was presented as part of the 50th anniversary of Liebherr-Werk Nenzing GmbH in June 2026 and is now available.