When it comes to removing rock with speed and control…
…the person who sees the truth first is the mechanic. Derek, the head mechanic at T&C Contracting, has worked on heavy equipment for more than a decade and has maintained KEMROC cutting attachments for the last five years. His perspective is simple: these cutters replaced every hammer and crusher in their fleet because they work, they last, and they save time on every job.
Below is what Derek has learned from working directly on the equipment, repairing it in the field, and watching crews use it on trenching, concrete, and mass rock projects across multiple states.
What KEMROC Equipment Does and Why it Stands Out
KEMROC cutters were developed in Germany and built for mechanical rock removal without blasting or drilling. These tools mount on an excavator and allow crews to cut rock cleanly, grind through concrete, and trench through mixed material with controlled accuracy.
Low Maintenance and Simpler Operation
Unlike hydraulic hammers that run on nitrogen and rely on high-pressure shock, KEMROC cutters operate with a steady hydraulic flow through a motor that sends the oil straight back into the excavator.
This means:
- No nitrogen bottles
- No flow meter adjustments every time an attachment changes
- No constant rebuilding
- Many fewer moving parts
With a cutter, crews set the flow once and run it. When the next cutter goes on, the settings usually carry over.
Why KEMROC Equipment Replaces Traditional Hammers
Hydraulic hammers work, but they destroy themselves while they work. They shake hard, stall in wet conditions, and rely on frequent tear downs. Derek has rebuilt hammers that cost between sixty and seventy thousand dollars to put back together.
KEMROC cutters, on the other hand, grind the material instead of beating it apart. Derek notes that they have not rebuilt a cutter to one hundred percent yet because there is not much inside to fail. Most repairs fall in the two to three thousand dollar range and can often be done right on the job site.
First Impressions and Real-World Performance
Derek admits that when he first saw the cutter, he thought it looked interesting but doubted it would perform. That changed after the first projects. Crews saw less downtime, more production, and consistent progress in every type of material.
Replacing Crushers and Hammers Entirely
Because the cutters grind rock into small, reusable material, their team no longer relies on rock crushers. They put most of the spoil back in the trench instead of hauling out oversized rock and buying stone.
Across the board:
- Less hauling
- Less cleanup
- Faster trenching
- More steady production
What Contractors Should Know Before Trying One
Derek recommends cutters to any contractor dealing with rock. He has not seen a material yet that the attachments cannot chew through. He also points out one advantage contractors notice quickly: trench size.
With a hydraulic hammer, you need a wide opening to reach deep. KEMROC cutters can cut down thirty feet with a trench width around forty two inches, saving huge amounts of backfill cost.
Versatile Across Materials and Applications
Their team has used the attachments for:
- Concrete pads
- Trenching through limestone and sandstone
- Cutting through mixed soils
- Working around rebar
- Removing mass rock
- Deep sanitary sewer installations
There are almost no limits to where the cutters can be used.
On-Site Repair and Maintenance Experience
Derek has rebuilt motors, changed chains, and performed deep repairs right at the job site. Everything is designed with consistency in mind. Smaller units share the same structure as larger ones, and many parts can be swapped across models.
Interchangeable Drums and Chain Systems
EK and EKT drums can convert between each other with a simple sprocket change. This allows crews to:
- Adjust trench width
- Switch between models
- Reconfigure equipment without buying a new attachment
This flexibility is part of why the cutters are becoming a standard in fleets around the country.
The Only Real Downside and Why KEMROC Equipment Still Wins
The only meaningful wear item is the chain on the chain cutter. It wears faster than the rest of the attachment, but it is inexpensive compared to hammer rebuilds. Replacing a chain is minor work next to a hammer teardown.
As Derek points out, hammers are destructive by nature. They beat apart the very components that keep them functioning. Cutters avoid that problem entirely.
Why Contractors Keep Adding KEMROC to Their Fleets
After years of daily use, Derek is confident in the engineering behind KEMROC. He has been to Germany and met the engineers who build them. Every attachment is quality checked multiple times before it reaches the U.S.
His conclusion is clear: cutters outwork hammers, outlast them, and help contractors become more profitable. For many fleets, hydraulic hammers now sit unused. Crushers have been sold off. The cutters do it all.
Ready to See the KEMROC Difference for Yourself
Call us today for a free, no obligation quote: (502) 305 8480
Visit our website to see the full lineup and demo videos: www.rockhardsolutions.com
Email our team for guidance: scott@rockhardsolutions.com
If you want a smarter, faster, more predictable way to cut rock, KEMROC is the direction the industry is moving. You do not have to stay tied to slow production, high maintenance, and costly hammer rebuilds.
The future of mechanical rock removal is here, and it works.
