Excavator attachments from Kemroc, including cutting wheels from the DMW series, are a useful addition in the demolition industry. This saw the company present a selection of its excavator attachments for use in construction, demolition, and dismantling to a wide audience at the Fachtagung Abbruch 2024, Europe’s largest demolition conference in Berlin.  The DMW series cutting wheels have played a significant role in the company’s success story, being produced in four series for excavators with an operating weight of 14t to 60t. Two high torque hydraulic motors on the side of each machine are designed to ensure high drive power and maximum cutting forces in hard rock and heavily reinforced concrete. 

Various cutting wheel variants and tooling are opening a wide range of applications, often in combination with other excavator attachments. Examples from Germany include the Trimberg Tunnel (Hesse), as when excavating both tubes of this 600m long tunnel on the A44 highway, engineers from the Hochtieff/Züblin consortium had to deal with difficult geology and had to install temporary shotcrete calotte bases. When dismantling them, they used a DMW 130 cutting wheel on a 23t excavator to cleanly separate the concrete from the subsoil and reuse it as a valuable building material.

A new construction has replaced the old Saar bridge on the Saar louis highway junction (Saarland). Here demolition specialists from the Max Wild construction company used a DMW 220 cutting wheel on a 40t excavator to dismantle the cantilever arms of the bridge body and the central slab between the two box girders. The resulting concrete segments were then removed from the structure by crane and crushed on the riverbank.

In another example in Weingarten (Baden-Wurttemberg), the demolition company CK Abbruch removed the foundations of a former industrial complex to make way for a new residential area. In accordance with the contract, this work in an inner city location had to be carried out with low noise and vibration levels. The demolition experts used two excavators, each with a combination of a DMW 220 ‘HD’ cutting wheel and a ‘KR’ series rotary drum cutter.

The final example is regarding the Kassel sewage treatment plant (Hesse) where two old stormwater overflow basins had to be replaced with new, larger basins. When demolishing the massive, ring shaped basin edges, the contractor Schnittger relied on DMW cutting wheels. The first basin was crushed quickly, quietly and with little vibration using a DMW 130 model on a 40t excavator. Demolition of the second basin was even faster with a larger DMW 220 model on the same excavator.

According to Enrico Trender, sales manager at Kemroc, the company’s excavator attachments still have a lot of potential for carrying out complex demolition projects with low noise and vibration levels, as well as in an energy saving and environmentally friendly manner: “In cooperation with our customers from the industry, we are constantly developing new demolition methods tailored to individual requirements.”