ER 650 – Liebherr A 924

Excavating refuge shelters


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Drum cutter ER 650 application video

Excavating refuge shelters


Application details


An ER 650 rotary drum cutter in combination with a hydraulic rotation unit ERU 3 is being used to cut out safety areas in the rock at an angle of 45 degrees to the tunnel in Thuringia, Germany.

In this application, the ER 650-3 is mounted on a standard 25 ton Liebherr excavator.  The use of the Erkat rotation unit from the ERU range made a significant improvement to productivity in this application.


No two jobsites are alike.
The productivity depends on the material characteristics or rock hardness, the settings and condition of the carrier unit, the technical and wear condition of the attachment and the operator skills, as well as a couple of other factors. The given figures can vary based on different conditions. We reserve the right to change technical data without further notice.