Grinders

Thompson Tractor offers a wide variety of quality grinders to give you the best quality product for your unique application.

The 2700C Horizontal Grinder is designed for high production jobs that require mobilityAt 55,600 pounds it is amongst the lightest of our grinder series. The 2700C is powerful, with your choice of a Caterpillar C13, Tier III, 475 hp engine or a C15, Tier III, 580 hp engine. Heavy duty and mobile, the 2700C can readily reduce a wide range of materials.
 
The Peterson 2710D horizontal grinder is designed for operations requiring high production and frequent moves between jobs. At 68,100 pounds it is also one of our lightest grinders. The 2710D is powerful, with your choice of a Caterpillar C15 Tier IV, 580 hp engine, or an optional C18 Tier II, 765 hp engine.
 
The 2750C electric horizontal grinder is ideal for operations that can take advantage of stationary or semi-stationary operations. Powered by a single 400, 500, or 600 hp electric motor, the Peterson 2750C has plenty of power. Since electric power costs are typically much lower than diesel fuel costs, electric power may just be the answer for increasing your profits. With a feed opening of 60¾ x 32 inches (154 x 81 cm) combined with Peterson’s high lift feed roll for an optional opening up to 44 inches (112 cm) high, the 2750C can reduce a diverse range of raw materials. Our quick-change multiple grate system makes it easy to customize grate configurations to produce a wide variety of finished materials.
 
The Peterson 27S Electric Drop Feed Hog is a wood waste processing machine, designed for applications that need a small footprint, excellent productivity, and easy maintenance. Based on Peterson’s proven 2700-series rotor and grate design, the 27S Drop Feed Hog is a simple and robust design that is ideal for sizing odd shaped materials. The 27S uses a 150 to 400 hp (112–300 kW) electrical motor that can be powered by a VFD or soft start controls. The 27S is a drop feed design, where material is gravity fed into the hopper, and is reduced against an anvil and sized through four grates which can be easily changed to match your product specification.
 
The Peterson 4700B horizontal grinder is our most popular model, and with good reason. Highly productive, efficient, and easy to transport, it hits the “sweet spot” in the Peterson grinder product line. It is powered by a Tier II Caterpillar C18 diesel engine with a rating of 765 horsepower (574 kW). With an internal drive compression roll and a 60 x 37½ inch (152 x 95 cm) feed opening, the 4700B can handle the requirements of your daily grind.
 
The 4710B is a track mounted horizontal grinder designed for high-volume producers with very demanding end-product specifications. Boasting 18 inches (45.7cm) of ground clearance—this model is particularly suited for land clearing operations or other applications where mobility and frequent moving is desired. Track mounting also reduces material handling costs in conventional recycling yards as well.
 
The 4710D is a track mounted horizontal grinder designed for high-volume producers with very demanding end-product specifications. Boasting 18 inches of ground clearance—this model is particularly suited for land clearing operations or other applications where mobility and frequent moving is desired. Track mounting also reduces material handling costs in conventional recycling yards as well.
 
The Peterson 4750B Horizontal Grinder is the electric powered version of the popular 4700B. Highly productive and efficient, it hits the “sweet spot” in the Peterson grinder product line. Powered by twin 400 hp electric motors with either VFD or soft starter control packages, the 4750B is ideal for stationary or semi-stationary operations. Electric power costs are typically much lower than diesel fuel costs, and in today’s changing economy, electric power may be the answer to increasing your profits.
 
Powered by a Caterpillar C27 engine making 1050 hp the Peterson 5700C horizontal grinder has the power to handle the toughest jobs. At 78,000 pounds the 5700C is designed for operations that require frequent moves between jobs without a special permit. With a feed opening of 60 x 40 inches combined with it’s high lift feed roll, the 5700C can readily reduce a wide range of material including stumps.
 
The 5710D is a tracked horizontal grinder designed for high-volume producers with very demanding end-product specifications. Powered by a Tier II or Tier IVi Caterpillar C27 1050hp  engine, the 5710D provides the highest power to weight ratio of any Peterson grinder. At 88,500 pounds, the 5710D is designed for operations requiring high production and frequent moves between jobs. With a feed opening of 60 x 40 inches combined with Peterson’s high lift feed roll, 5710D can readily reduce a wide range of material including stumps. The 5710D control panel features a large LCD display that provides the operator with the information needed to efficiently operate the unit. System pressure transducers and remote monitoring capability simplify set up and provide complete engine and system parameters. The 5710D can be operated by wireless remote from the comfort of your loader. The optional tow dolly makes highway transportation between jobs easy.
 
The Peterson 6700D is Peterson’s largest horizontal grinder, and is designed for operations  that need the most durable, highest output machine. Powered by a 1125hp (839 Kw) Tier II, Caterpillar C32 engine or an optional Tier IVi Caterpillar C32 engine, the 6700D is designed for the toughest jobs. With a feed opening of 66 x 50 inches (168 x 127 cm), the 6700D can even process large stumps that used to be reserved for tub grinders! The grinder is particularly suited for land clearing operations or other applications where mobility is desired. System pressure transducers and remote monitoring capability simplify set up and provide complete engine and system parameters.
 
The Peterson 6710D is Peterson’s largest horizontal grinder, and is designed for operations that need the most durable, highest output machine. Powered by a 1125hp Tier II, Caterpillar C32 engine (or an optional Tier IVi Caterpillar C32 engine), the 6710D is designed for the toughest jobs. With a feed opening of 50 x 66 inches the 6710D can even process large stumps that used to be reserved for tub grinders! The grinder is particularly suited for land clearing operations or other applications where mobility is desired. Track mounting also reduces material handling costs in conventional recycling yards as well. With the R+ package, the 6710D can be configured as a mid-speed grinder to handle heavily contaminated piles, and easily converts back to a high speed grinder for typical land clearing operations.
 
The Peterson 6750D Horizontal Grinder is the electric powered version of the popular trailer mounted 6700D. Highly productive and efficient, it hits the “sweet spot” in the Peterson grinder product line. Powered by twin 600hp lectric motors with either VFD or soft starter control packages, the 6750D is ideal for stationary or semi-stationary operations. Electric power costs are typically much lower than diesel fuel costs, and in today’s changing economy, electric power may be the answer to increasing your profits. With an internal drive compression roll and a 66 x 50 inch feed opening, the 6750D can handle the requirements of your daily grind.
 
The high-speed grinder AK 235 easily breaks any form of resistance, and you’d better not get distracted while the machine tackles everything from green and yard waste to roots and waste wood – the job’s done in next to no time.Proper equipment is what it takes for this level of performance. Weighing 1.3 t (2.866 lb) the flail drum nevertheless rotates at a stunning 1.200- plus rpm and unleashes its 16 free-swinging flails and 28 ripper teeth onto the ingoing material.Thanks to the patented load-sensitive material feed with its replaceable grinding system, it takes less than 15 minutes to get the AK 265 ready for another grinding task. This has the machine clearly stand out for mobility and versatility. The AK 265 is driven by a powerful and highly efficient Mercedes-Benz diesel engine. The unit is equipped with hydraulic, control and safety systems by leading manufacturers. Therefore, you can count on minimal downtime and maintenance even if the machine continuously operates at full throttle. 
 
As the mainstay of the AK series high-speed grinders, the AK 535 combines affordability and efficiency with performance and reliability. Built with the power and durability needed to handle a wide range of organic materials, the AK 535 is the perfect machine for operations that need to generate large volumes of high-quality, finished product. Consistent, efficient and cost effective to save you time and money.
 
Dappstadt AK 635 High-Speed Grinder​
Built with the same collection of innovative features as all AK series grinders, the AK 635 is a high-volume machine designed to produce hundreds of yards of finished material every day. The up-swing hammermill engineering converts more of your source stream into a very consistent, high-quality product, maximizing your revenue and profit. Organics, shingles, wood waste, drywall — build your business on the back of the AK 635.
 
Two proven grinding principles intertwined into one seamless procedure – the DZ 750 makes a strong case for the solution-minded Doppstadt expertise.Festivities kick off with the tried and tested low-speed shredding process known from the DW series. Exclusively designed as a recycling system for scrap wood, the DZ 750 separates the incoming wood and extracts the bulk of ferruginous particles on the spot with the help of overband magnets. Passing through a scraper floor, the scrap wood then reaches the high-speed grinding unit as used in the AK series. There, the powerful flail mullet drum cuts the material to the desired size.  Free-swinging shredding tools provide maximum flexibility and can be exchanged within minutes thanks to the proven „Dopplock“ interlocking system.The icing on the cake is another downstream magnetic separation unit which takes care of the remaining Fe-particles that somehow made it through to here.Turning scrap wood into a high-quality, ready-to-use end product in a single, seamless shredding process – the DZ 750 by Doppstadt makes this as easy as taking candy from a baby! 
 
The Doppstadt grinders stand out for their free-swinging flail holders with separately replaceble wearing tools and the heavy duty rotor running at approx. 1,000 rpm.Easy maintenance thanks to large protection doors on all sides, separate drives for scraper floor and feed-in roller optimizing the material feed and the throughput. Wide range of possible applications as all the shredding tools of the mobile doppstadt series can be used.