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

  • Dana and Mecalac announce electric drive collaboration
    July 19, 2018
    Dana and Mecalac have collaborated to develop an innovative wheeled excavator featuring an all-electric drivetrain. The firms have developed the special e-Drivetrain system for the new Mecalac e12 electric compact wheeled excavator. This machine recently won the Energy Transition Award as part of the 2018 Intermat Innovation Awards. Based on the proven Mecalac 12MTX model, this version is the world’s first all-electric compact wheeled excavator. The machine features Spicer 112 axles and a Spicer 367 shift-
    Read More
  • Airport runway rebuild at Bologna
    May 15, 2019
    Rebuilding a runway requires special attention to detail to maximise efficiency and safety Airport runways face special challenges with regard to the loads they carry on a daily basis, particularly when aircraft are landing. A modern jet aircraft will typically land at speeds of around 240-260km/h, with a laden 747 weighing as much as 265tonnes at the end of a long flight. The stresses these large aircraft place on runway surfaces are enormous and not just with the massive impact forces exerted during
    Read More
  • Without political intervention, new technologies for using waste rubber in roads will not take off
    November 14, 2017
    New technologies to make rubber modification of asphalt are under development and testing. But political will is the real key to diverting old tyres from landfill - Kristina Smith reports. A new way to introduce end-of-life tyre rubber into asphalt mixes could be the key to diverting more tyres away from landfill, according to Dr Davide Lo Presti, principal research fellow at the Nottingham Transportation Engineering Centre (NTEC) at the University of Nottingham.
    Read More
  • Rebloc wins in Estonia with its noise barrier NB100/300_8_H2/W4
    June 26, 2018
    Rebloc’s integrated noise barrier offers maximum noise protection while creating a highly effective noise barrier and vehicle restraint system. Rebloc says that its system meets the highest safety and quality standards and is tested according to European Standard EN 1317 (vehicle restraint system), EN 14388 and EN 1793 (noise barrier). The main advantage of the noise barrier system is the combination of a vehicle restraint system as a concrete safety barrier with an integrated noise barrier. It features a
    Read More

Highlighted Content