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. The B-66 simplifies high-volume grinding with exclusive features designed to maximize uptime and end product control.

rotochopper b-66 horizontal grinder cover

Download the Brochure

(PDF Format)

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

Introducing the Rotochopper B-66 L-Series horizontal grinder, the most advanced fiber processing system on the market. The B-66L has been designed to meet the needs of grinding larger, more abrasive feedstock material and engineered to increase overall production rates with unmatched efficiency.

Learn more about the B-66L horizontal grinder
B-66LTD landclearing debris
b66 diesel wood grinder grinding logs
The reliability and consistency of the product coming off of the B-66 is what really sold us on it.

— Mike Walker, Hansen's Tree Service

Ready to Learn More?

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

Find Your Sales Team

Your Sales Team

Edit Location
  • This field is for validation purposes and should be left unchanged.