Rotochopper grinding solutions convert a wide range of feedstocks into premium end products with “Perfect In One Pass” simplicity.


Through our commitment to “Perfect In One Pass” equipment solutions, we continue to develop new innovations for challenging grinding applications.


Our factory-direct customer support team provides world-class service and expert guidance to keep your grinding operation running at peak performance.


Through our commitment to customer success, we lead the industry in innovation, developing several industry firsts, patented features, and unique machines.



The Standard for Mid-Size Grinder Efficiency

As the third generation of the long popular EC series grinder, the EC-366 continues to raise the standard for uptime and efficiency we set with the first Rotochopper electric grinder.

EC366 front angle

The EC-366 sets the standard for mid-sized electric grinders with customer-focused engineering and “Perfect In One Pass” grinding efficiency.

rotochopper ec-366 ec-256 horizontal grinders cover

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Featured Specificaitons

Icon/Weight 24,000 - 45, 000lbs
Icon/Opening 66" x 18" Throat Opening
Icon/Electric 1 Electric Motor

Exclusive Technology

Patented StopWatch
The StopWatch system helps reduce downtime by stopping the infeed and alerting the operator when un-grindable objects contact the rotor.

Mechanical Start Assist
This patent-pending system reduces start-up amp surges by hydraulically spinning up the rotor before starting the main electric motor.

Screen Installation System
The patented screen change system allows one operator to quickly and easily change teeth and screens without any special tools.


Precision Grinding
The EC-366 brings the uptime and “Perfect In One Pass” precision necessary to convert steady streams of raw materials to premium products.

Simplified Maintenance
The EC-366 maximizes uptime productivity with time-saving features like our hydraulic screen changer and StopWatch monitoring system.

Unmatched Adaptability
The EC grinder series is designed to seamlessly integrate with material handling equipment to provide complete processing solutions.

ec366 electric wood grinder processing pallets
The EC-366 has helped reduce our wood waste by volume. I call it my vacuum cleaner because it runs 12 hours a day, it sucks the material in and produces the finished product with no operator intervention.

— Jeff Thompson, Greenway Recycling Services LLC

Ready to Learn More?

Contact us to see what an EC-366 can do for your grinding operation.

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