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Peterson R+ Horizontal Grinder Package Brochure · PDF file That’s a Peterson. Peterson Pacific Corp. (Peterson) is a Eugene, Oregon based manufacturer of horizontal grinders, disc

Apr 27, 2020




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  • LARGER SHEAR PIN Allows a dramatic increase of force needed to trip the Impact Release System.

    CUSHION BLOCKS Increased hardness to allow the Impact Release System (IRS) to absorb harder hits.

    R+ ROTOR Heavy duty and robust, the R+ rotor’s asymmetrical pattern of high & low bits create an aggressive shearing action with the comb grate.

    BAFFLE PLATE Reinforced steel for heavier impacts from ejected materials.

    GRATE SUPPORTS Modified grate supports allow for multiple baffle plate placements.

    COMB GRATE The comb grate is a heavy-duty grate with additional shearing area, allowing material to be fractured across many surfaces. The three lower grate positions remain empty for material to easily exit the grinding chamber.







    R+ AIR BAGS Air bags allow more materials to pass through the grinding chamber without unnecessary machine shutdowns, but still offers protection by opening the Impact Release System if an ungrindable object is encountered.

    SHEAVE The larger sheave decreases the rotor speed in half, allowing the rotor to sustain less damage from impact while creating more torque to efficiently power through heavy materials.

    HEAVY DUTY CONVEYOR BELT A heavy duty conveyor belt combined with an increased discharge clearance allows for larger volume of materials and superior belt life.


    Need to grind tough stuff? With Peterson’s R+ Package, you get the best of both worlds.

    The weakness of many slow-speed shredders is low throughput, and high- speed grinders can be vulnerable to contaminated materials. The R+ Package is the best of both worlds—the output of a high-speed grinder with the protection of a slow-speed shredder.

    Peterson’s innovative R+ Package can transform our grinder into a mid-speed unit, which is ideal for Construction & Demolition (C&D) or Municipal Solid Waste (MSW) applications.

    The heart of our machine has been upgraded with heavier duty components designed to withstand the rigors of reducing these types of materials.

    The machine can be reversed back to a high-speed grinder in a day, if the application requires it—a feature not found with any other grinder on the market.

    High production, robust components, and superior product protection, make this a sure investment.

    4700 Series

    6700 Series

    5700 Series





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    R+ Package is Available on the following Models

    Construction & Demolition Recycling Municipal Solid WasteStorm Debris Railroad Ties

    Upgraded Components Designed to Handle the Toughest Applications

    Typical R+ Applications Your Peterson grinder with the R+

    Package enables you to bid on projects that other machines can’t handle. Strong, productive, and robust, the R+ Package can give you the competitive advantage.

    Operators must ensure waste material does not contain hazardous or regulated substances requiring special handling.

  • 29408 Airport Road Eugene, Oregon 97402

    phone 541.689.6520 fax 541.689.0804

    Power. Pride. Productivity. That’s a Peterson. Peterson Pacific Corp. (Peterson) is a Eugene, Oregon based manufacturer of horizontal grinders, disc and drum chippers, wood debarkers, blower trucks, screens, and stacking conveyors that are sold worldwide. Our company has 110,000 square feet of modern manufacturing space with a capable and innovative engineering group. Peterson machines are sold and supported through a worldwide network of distributors and direct sales and service representatives. Since 1981, Peterson has built equipment that turns low- grade organic materials into high value products.

    Peterson is a subsidiary of Astec Industries, Inc. of Chattanooga, Tennessee, America’s leading manufacturer of equipment for asphalt road building, aggregate processing, oil, gas and water well drilling, and wood processing.

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