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Rotochopper design, build, and support a complete line-up of horizontal grinders, wood chip processors, asphalt shingle grinders, and mobile bagging systems from a state-of-the art manufacturing facility in St. Martin, MN.

Rotochopper began with the idea that waste processing equipment should do more than simply reduce the volume of waste heading to landfill or generate low grade finished products. It was a philosophy that grinding equipment should deliver practical, profitable solutions.

Rotochopper is committed to designing equipment that could produce high quality commodities like landscape mulch, boiler fuel, and animal bedding, without endless hassle. It was a different approach to grinding equipment, and it has been defining Rotochopper’s customers’ success stories for over 20 years. As a result of Rotochopper’s dedication and focus on their customers needs, Rotochopper have positioned themselves as a leader in the North American market.


Rotochopper Manufacture:

  • Mobile Diesel Horizontal Grinders

  • Electric Horizontal Grinders

  • Wood Chip Processors

  • Mobile Bagging Systems

  • Hammer Mills


A History of Innovation:


Rotochopper’s commitment to “Perfect In One Pass” finished product quality has led to several innovations, including several industry firsts, patented features, and unique machines.

Rotochopper innovations include:

  • The first turnkey paper bedding sizing and baling system

  • The first machine capable of simultaneously grinding and coloring landscape mulch

  • The first mobile, completely self-contained bagging system

  • The first purpose-built asphalt shingle grinder


Rotochopper is represented in Australia and New Zealand by Greenstar Equipment.



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.



The FP-66 is uniquely scaled to match the needs of forestry biomass processors, large pallet shops, and other companies that need a full-featured grinder with mid-range horsepower.



Our most compact horizontal grinder, the MP-2 is packed with exclusive features you won’t find on other grinders in its class (or even on larger grinders).

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B-66 E
By matching rugged reliability to precision grinding technology, the B-66 E delivers high volumes of engineered fiber commodities like colored landscape mulch, animal bedding, and asphalt cement supplement (from asphalt shingle waste).

MC266 Grinder Rotochopper

For over ten years, the MC-266 has embodied the advantages that define the Rotochopper difference—“Perfect In One Pass” grinding capacity matched with efficiency, versatility, and dependability—all packaged in a highly portable platform.

For over 15 years, the Rotochopper EC series has been the standout choice for pallet shops, sawmills, transfer stations, and other facilities that require consistent uptime and precision grinding in a mid-sized grinding system.

SB-24 E
The SB-24 E is designed specifically to grind slabs in-line with a sawmill.

Regrinding CP-118

Throughout much of the USA, Canada, and many regions around the world, color enhanced mulch continues to be the most profitable wood fiber market.

Go-Bagger 250

The Rotochopper Go-Bagger 250 can fill and seal bags with landscape mulch, decorative rock, fuel pellets, topsoil, and many other commodities commonly offered in retail bags.

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Fine Grinding System 

In a Rotochopper two-stage system, an electric grinder combines seamlessly with a hammermill to provide a “Perfect In One Pass” fine grinding solution for animal bedding and other short length fiber products.

RMT Hammermills

Nothing beats the efficiency and simplicity of a hammermill for fine grinding wood waste or ag residue—especially when it grinds in-line with a Rotochopper primary grinder.

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