Rotochopper B-66T producing natural mulchRotochopper B-66T producing natural mulch


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

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.

Download the Brochure

(PDF Format)

B-66 Horizontal GrinderB-66 Horizontal Grinder

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.


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.

Additional Specs


  • Length: 41'
  • Width: 9' 9"
  • Height: 13' 3"
  • Weight: 67,500 - 90,000 lbs.

Power Supply

  • 755–1050 HP diesel engine
  • 340-gallon fuel capacity
  • Microprocessor engaged HTPO clutch
B-66TD with KeyKnife™ chipper packageB-66TD with 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.

Contact Your Team


Required fields are Marked *