Kemroc’s chain technology cuts trenches faster

Attachment specialist Kemroc has brought two new cutting systems to Intermat for the first time: its EK range for cutting trenches - and a new system within its Cut & Break (C&B) range which can be used for demolition of civil structures or for rock extraction. “This is the first time we have exhibited the chain cutter in France,” says Klaus Ertmer, Kemroc managing director and the inventor of all the attachments. “Because the cutting head has a chain in the middle, it means that you can dig very small, d
April 23, 2018 Read time: 3 mins
Attachment specialist 8755 Kemroc has brought two new cutting systems to Intermat for the first time: its EK range for cutting trenches - and a new system within its Cut & Break (C&B) range which can be used for demolition of civil structures or for rock extraction.


“This is the first time we have exhibited the chain cutter in France,” says Klaus Ertmer, Kemroc managing director and the inventor of all the attachments. “Because the cutting head has a chain in the middle, it means that you can dig very small, deep trenches with the machine.”

Emroc developed the machine in response to feedback from customers, says Ertmer. Standard cutter attachments have cutting wheels at either edge, and must be moved from one side to another to dig the trench, whereas with the EK tools, a straight cut is possible.  This requires less skill from the excavator or backhoe operator and also speeds up the process.

Ertmer started developing the EK range in 2012, perfecting the chain technology – which has been patented - in the Middle East. “It took us a long time to make the chain reliable,” says Ertmer. “It wasn’t easy.” To date, Kemroc has sold around 60 EK attachments, says Ertmer, largely in the Middle East but also in Europe too.

Visitors to Ertrmer’s stand, which is adjacent to that of its French dealer, Witek, can also see the combination of a slim DMW cutter wheel with its new C&B breaker tool. This system could be used to demolish reinforced concrete structures or for rock extraction.

The DMW wheel is first used to cut slots in the concrete or rock, with the spacing and depth dependent on the material being cut. The wedge-shaped breaker with picks at either side of its tip is then pushed into the grooves to force the concrete or rock apart.

“It makes a good alternative where drill and blast is not possible, due to restrictions on noise or vibration,” says Ertmer. “It can be used for breaking soft or medium-hardness rock.”

Though Ertner designed his first cutting tool attachment in 2000, Kemroc has only been in existence for just over a year - since Atlas Copco acquired Ertmer’s firm Erkat which supplies traditional trenching tools, without the central chain technology. Kemroc supplies markets around the world, says Ertner, including its home country of Germany, Switzerland, North Africa, Japan and the US.

For more information on companies in this article

Related Content

  • Bridge formwork solutions complete big bridge picture
    July 2, 2014
    Advanced bridge formwork solutions are allowing contractors to complete vital major highway infrastructure projects covering Norway, Sweden, Estonia and Poland. Guy Woodford reports Building the Labbdalen bridges in Norway is a key feature of the E6 highway improvement programme. Main project contractor HÆHRE tasked RMD Kwikform and Teknikk with supplying a complete formwork and shoring solution that could tackle the challenging Norwegian terrain, whilst preserving the environment. Situated two hours
    Read More
  • Plain sailing for Caterpillar’s PM 300 series
    February 22, 2019
    Caterpillar’s revamped small cold planers have upped the stakes in the urban refurbishing market. World Highways deputy editor David Arminas recently caught up with A.J. Lee, global segment manager, on Spain’s Costa del Sol
    Read More
  • Hydraulic breaker solves face stability challenge
    February 6, 2012
    UK QUARRY OPERATOR is now using a Sandvik hydraulic breaker for primary winning. This technique has been introduced to the operation to solve a face stability challenge and is being used instead of blasting. The 3.8tonne BR4511 was supplied by local Sandvik breaker dealer M&M Plant and is mounted on a Komatsu PC450-8 hydraulic excavator.
    Read More
  • The March of the Urban Low-emission Zone
    April 17, 2018
    Europe’s political patchwork is getting a low-emission zone overlap, according to Malcolm Kent* By now, pretty much everybody in the industry will be aware of the Low Emission Zone in London, UK. But awareness of similar European zones about to start or expand might be more patchy. The background to all of these schemes is the problem of air quality, particularly European Union rules setting limits on acceptable pollution levels. It was found some years ago that several member states’ cities, including
    Read More

Highlighted Content