B-66 E

Horizontal Grinder

High-Volume, High-Efficiency Grinding

The B-66 E adds precision grinding capacity and rugged engineering to the efficiency and reliability of electric power for remarkable uptime and productivity.


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B66E front angle

Featured Specifications

UP TO 1000 HP
Icon/Weight 59,000 - 65,000 lbs
Icon/Opening 66" x 36" Infeed Clearance
Icon/Electric 1 Electric Motor

Unparalleled in high-volume grinding efficiency, the B-66 E offers “Perfect In One Pass” simplicity for colored landscape mulch, animal bedding, and other products.

  • Advantages

    RotoLink® Monitoring System

    Monitor and adjust critical settings on your grinder with Rotochopper customer service in real-time using the RotoLink® monitoring system from anywhere in the world.

    Grind & Color System

    Our patented Generation II Colorizer System maximizes quality while minimizing costs by injecting colorant directly into the grinding chamber to produce mulch with the right size, texture, and color.

    Screen Installation System

    Our patented system allows operators to quickly change screens – reducing downtime and enhancing versatility – without needing overhead lifting equipment, fasteners or special tools.

    Simplified Maintenance

    The B-66 E maximizes the reliability of electric power with rugged engineering and time-saving features that limit maintenance downtime.

    Unmatched Efficiency

    No other grinder delivers this level of precision grinding efficiency for such a broad range of feedstocks and engineered fiber products.

    High-Volume Precision Grinding

    The B-66 E delivers high-volume “Perfect In One Pass” simplicity for colored landscape mulch, animal bedding, and other premium products.

  • Exclusive Features

    Replaceable Mount Rotor

    Simple yet rugged, our patented rotor limits bolt stress from severe impacts and lets operators quickly swap tooth mounts without special tools—just two bolts per mount.

    Mechanical Start Assist

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

    Adjustable Slab Ramp

    This patented feature enables the operator to hydraulically raise or lower the height of the cutting anvil relative to the grinding rotor.

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  • Industries
  • Additional Specs


    • Length: 35′ 9″ – 42′ 1″
    • Width: 9′ 4″ – 9′ 9″
    • Height: 11′ 6″ – 13′ 6″
    • Weight: 59,000 – 65,000 lbs.

    Power Supply

    • 500-1,000 HP electric motor
    • Standard solid state soft start
    • Dedicated hydraulic pump motors

    * Dimensions for electric models do not include discharge conveyors, which vary in length & height.


b66e mobile electric horizontal grinder by mulch piles
"The B-66 E grinds railroad ties to a fuel product without difficulty, which has allowed us to take advantage of new opportunities."

— Joe Volini, Heartland Recycling

Ready to Learn More?

Are you ready to see how the B-66 can minimize your grinder operating costs? The lower cost of electricity vs. diesel fuel is just the beginning.

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