Electrification in special foundation engineering: Bauer presents eCSM prototype

• Electrification of the proven Cutter Soil Mixing method (CSM)
• Powerful electric drives instead of hydraulic drives.
• Digital mixing assistant for more precise addition of cement

Munich, Germany – At bauma 2025, BAUER Maschinen GmbH presented a groundbreaking innovation project: the prototype for electronic Cutter Soil Mixing (eCSM). This enhancement of the established CSM method replaces the traditional hydraulic components with a powerful electric drive system. “There is no comparable electrified diaphragm wall equipment currently on the market. With the eCSM, Bauer is positioning itself as the pioneer in this technology,” says Stefan Wegerer, Project Manager at BAUER Maschinen GmbH. 

Electrification as an innovative leap

The successful test of the eCSM prototype marks an initial milestone in developing a fully electrified trench cutter. While hydraulic systems reach their technological limits, the electric drive technology delivers significant improvements in efficiency and performance. With this forward-thinking technology, Bauer aims to further expand its leading position in the area of soil mixing through innovative and sustainable solutions.

Powerful and precise: How the eCSM works

The eCSM system uses two powerful electric motors that drive the mixing wheels with an optimal speed of 40 rpm to achieve uniform mixing quality even in difficult soil conditions. In the process, the soil is loosened and simultaneously mixed with cement slurry at the same time to create a homogeneous cut-off wall. Energy supply is delivered via power cable, while two frequency converters ensure precise control of the drives. 

Digital support from the mixing assistants

Another key advancement is the introduction of a digital mixing assistant. While equipment operators previously had to control all parameters manually, the system now automatically regulates the pulling speed. This ensures that the defined total quantity of cement is distributed uniformly over the entire trench length. This not only increases precision but also reduces error and optimizes the construction process.

Looking ahead

The next phase of development will focus on creating a robust overall system that is ready for use on sites. In the long run, Bauer aims to provide its customers with a fully electric solution that offers both ecological benefits and enhanced economic efficiency. With the eCSM prototypes and their continuous further development, which represents an important milestone in the field of research and development, Bauer reaffirms its commitment to creating innovative solutions that lead the construction industry towards a more sustainable future.

Photos of the exhibits (© BAUER Group) can be found in our image gallery.