
KEMROC KR Rotary Drum Cutter Powers Trenching Project, France
Caterpillar 330 with KEMROC KR 150 | Trenching in Hard Limestone Rock
In the heart of Villes le Lac, France, a trenching and excavation project reached new levels of efficiency and precision thanks to the deployment of the KEMROC KR 150 rotary drum cutter. Mounted on a Caterpillar 330 excavator, this high-performance excavator attachment proved its superiority in handling the demands of trench excavation in hard limestone rock with a compressive strength of up to 100 MPa.
Trench Excavation Project Overview
The trench excavation required precise and deep cuts for a critical pipeline construction project. The excavation dimensions spanned 7,300 mm in length, 3,800 mm in depth, and 1,400 mm in width. This job called for a robust and reliable hard rock cutting machine capable of handling high-resistance limestone without compromising on speed or safety.
Unlike traditional trenching equipment, such as hydraulic breakers or conventional trenchers, the KEMROC KR 150 drum cutter offered a cleaner, quieter, and more efficient alternative. It allowed the team to dig trench sections with minimal disruption, lower vibration, and improved environmental control, a major advantage in populated and sensitive zones like Villes le Lac.
KR 150: A Stone Cutting Machine Engineered for Tough Excavation
The KEMROC KR 150 is a powerful drum cutter excavator attachment specifically engineered for demanding trenching applications. With its robust design and optimized pick layout, it excels in milling through medium to hard rock types like limestone. The drum cutter’s high torque allows for effective material removal, reduced wear on the host machine, and exceptional cutting accuracy.
The KEMROC KR 150 is not just a rock cutter, it’s a versatile rock cutting attachment designed for maximum productivity. With minimal noise and vibration, the drum cutter maintains a smooth trench profile, ideal for projects requiring clean sidewalls and precise depth control. This level of refinement transforms it from a backhoe attachment into a trenching powerhouse, built for modern infrastructure needs.

Site Performance & Excavation Results
Throughout the months-long excavation of a trench in France, the KEMROC KR 150 delivered outstanding performance. Operating continuously in high-compression limestone, the attachment completed the trenching project approximately 3 times faster than traditional methods, highlighting its efficiency and cost-effectiveness.
The fine material produced by the drum cutter was directly reusable, reducing the need for additional crushing or material handling equipment on-site. This translated into major savings in time, transportation, and disposal costs. By eliminating the uneven chunks typically generated by hydraulic hammers, KEMROC’s trencher solution ensured the excavated trench could be immediately prepared for pipe laying, an essential factor in time-sensitive pipeline construction projects.

Why KEMROC KR 150 Leads the Future of Trenching Equipment?
Contractors chose the KEMROC KR 150 over other brands for one simple reason: performance. This drum cutter redefines trenching with a smart technology that minimizes material waste, enhances output quality, and extends the lifespan of both the excavator and the attachment.
The ability to use fine-cut material directly in backfilling operations is a major breakthrough in excavation of a trench. Moreover, the KEMROC attachment’s design allows for stable, continuous operation even in the toughest geological conditions, making it the go-to solution for trench excavation across Europe.
On top, the KEMROC KR rotary drum cutter offers key advantages such as reduced fuel consumption, lower operating noise, and compatibility with a wide range of excavator models. These benefits make it not only a smart rock cutting excavator attachment, but also a strategic investment for contractors seeking innovation, sustainability, and profitability.