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.



Versatile Precision Grinding

The B-66 transforms a broad range of raw materials—whole trees, slabwood, railroad ties, asphalt roofing shingles, bales, sorted C & D, wood chips, pallets—into engineered fiber products.

B66 front angle

The B-66 is a high-volume “Perfect In One Pass” solution for colored mulch, animal bedding, and other engineered fiber products. Our largest, most sophisticated grinder, the B-66 simplifies high-volume grinding with exclusive features designed to maximize uptime and end product control.

rotochopper b-66 horizontal grinder cover

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Featured Specificaitons

UP TO 1050HP
Icon/Weight 65-95,000lbs
Icon/Opening 66" x 36" Throat Opening
Icon/Diesel Diesel Engine

Exclusive Technology

Grind & Color System
This patented system injects colorant directly into the grinding chamber to produce mulch with the right size, texture, and color.

Replaceable Mount Rotor
Simple yet rugged, this patented rotor lets operators quickly swap tooth mounts without special tools—just two bolts per mount.

Track & Dolly System
It’s the best of both worlds: crawler tracks to navigate your worksite, plus a removable dolly to streamline highway transport.


High-Volume Precision Grinding
The B-66 combines high throughput capacity with “Perfect In One Pass” simplicity for colored mulch, animal bedding, and other products.

Simplified Maintenance
The B-66 maximizes your uptime productivity with time-saving features like our patented screen changer and replaceable mount rotor.

Unmatched Versatility
No other grinder offers this level of versatility to quickly switch between diverse feedstocks while maintaining precise product control.

B-66 L-Series

The Rotochopper B-66 L-Series horizontal grinder is packed with enhanced features designed to improve input capabilities and increase overall production rates. Raw materials transition smoothly to the powerfeed with the lower, longer and less drag infeed hopper design. A more aggressive powerfeed design pulls materials into the grinding chamber with ease and the taller throat opening accommodates larger logs to pass through the powerfeed. Choose either a 950 or 1050 hp diesel engine to power the B-66 L-Series grinder. Pair the B-66L with the enhanced Gen II Dolly to seamlessly transition from highway transport to work site navigation in minutes. Watch the B-66L in action.

Find everything you have come to expect from the Rotochopper B-66 and more in the new B-66 L-series.

B66L land clearing Mankato18-1
Rotochopper B66 track dolly keyknife chipper package
"The ability to make the right particle size is absolutely essential to our profitability and growth as a company. We’ve never seen anything that beats Rotochopper on particle size control."

— Patrick Whittlesey, Austin Landscape Supplies

Ready to Learn More?

Ready to learn how the B-66 can maximize the value of your raw materials? Contact us for more information.

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