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

  • Developments in road stabilisation machines
    February 14, 2012
    Road stabilisers play an important role for road recycling, with new machines coming to market - Mike Woof writes The reclaimer/stabiliser is becoming a much more important machine in roadbuilding applications now that the construction market is increasing its use of road recycling. The reclaimer/stabiliser used to be a niche machine offered by specialist manufacturers such as CMI, which was a pioneer of the concept. However in recent years this type of machine has become an important construction tool,
    Read More
  • Jetpatcher: patch it right first time
    March 3, 2023
    Jetpatcher Corporation says that its Jetpatcher Road Repair System is proven to reduce costs by up to 40 per cent when compared to traditional pothole repair methods.
    Read More
  • Cummins completes China collection
    November 21, 2018
    Cummins has showcased a full line of China Nonroad Stage IV emissions engines with the unveiling of the upgraded high performance 8.9-litre L series engine. The unit moves up to 298kW with a peak torque of 1800Nm – an 11% increase on its predecessor – and offers class-leading fuel economy and the ability to run at high altitudes while maintaining power capability. Cummins full line-up of engines for the new China Nonroad Stage IV emissions standard spans 2.8 to 15 litres displacement with a power capabili
    Read More
  • Junction construction
    February 7, 2012
    Two Liebherr mobile cranes and four Atlas Copco compressors are playing an important role in upgrades to a highway in Brazilian city São Paolo.
    Read More

Highlighted Content