Stump Bit Grinder (AV-56) – Professional Grinding Equipment

Description Professional Stump Grinder Tooth Sharpening Machine for Multiple Cutter Styles The Thorvie AV-56 Stump Bit Grinder is a professional sharpening system designed for sharpening many of the most popular brands of stump grinder teeth and carbide stump cutting tools. Built for sharpening businesses, tree service companies, and stump grinding professionals, the AV-56 provides fast, precise sharpening while helping reduce tooling replacement costs and extend cutter life. The AV-56 base machine is designed to work with multiple interchangeable stump grinding tool fixtures, allowing operators to sharpen a wide variety of stump grinder tooth styles with one versatile sharpening platform. Simply add the tool fixture and grinding wheel you need to create your stump bit sharpening system.   Fast & Accurate Stump Grinder Tooth Sharpening The AV-56 sharpening machine is engineered for high-speed sharpening efficiency, with many stump grinder teeth capable of being sharpened in less than two minutes per tooth. The machine includes a tilting motor system that simplifies alignment for: Straight teeth Right-hand teeth Left-hand teeth For certain specialty fixtures, the motor remains at the zero quadrant for simplified operation and consistent sharpening angles.   Professional High-Speed Grinding System The AV-56 includes a: 60 HZ TEFC Leeson motor 3450 RPM grinding speed Machine light Angle finder Training video Written instructions Thorvie customer support This high-speed professional grinding setup delivers the precision and power required for carbide stump grinder tooth sharpening.   Compatible Stump Grinder Tooth Fixtures The AV-56 base machine does not include tool fixtures or grinding wheels, allowing businesses to customize the system for their specific stump grinder teeth and cutter systems. Compatible Tool Fixtures Include: Standard Stump Grinding Fixture Designed to sharpen standard 1/2″ stump grinding teeth used on many popular stump grinding machines. Sharpens both the top radius and flat face of the cutter tooth. Yellow Jacket Stump Grinder Tooth Sharpening Fixture Designed for sharpening 3/4″ Yellow Jacket stump grinder teeth. Sharpens both the radius and flat face quickly and accurately. Sandvik Stump Grinding Fixture Designed for sharpening Sandvik stump grinding teeth with flat tops and rounded corners. Green/Red Tooth Stump Grinding Fixture Designed for sharpening 500, 700, 900, and 1100 series Green/Red style stump grinder teeth.   Cleaner Grinding with Diamond-Plated Wheels The Standard, Yellow Jacket, and Sandvik fixtures use special diamond-plated 40-grit radius grinding wheels designed to match the contour of stump grinding teeth. Benefits include: Cleaner grinding process No wheel dressing required Faster sharpening Consistent tooth profiles Longer wheel life Unlike traditional green grinding wheels, Thorvie’s plated wheels also include diamond plating on the side of the wheel for sharpening the flat face of the tooth. The Green/Red fixture uses a 180-grit bonded diamond wheel with: 1/4″ depth of grinding material Extended wheel life Consistent carbide sharpening performance   Ideal for Tree Service & Sharpening Businesses The AV-56 is ideal for: Professional sharpening businesses Mobile sharpening services Tree service companies Stump grinding businesses Outdoor equipment repair shops By sharpening stump grinder teeth instead of replacing them, businesses can significantly reduce tooling expenses while improving cutting efficiency.   Expand Your Sharpening Business Sharpening stump grinder teeth can be a profitable business opportunity on its own. Thorvie also recommends pairing the AV-56 with the AV-54 Automatic Knife Grinding Machine. Many stump grinding companies also operate wood chippers, creating additional opportunities to sharpen: Chipper knives Industrial cutting blades Tree service equipment tooling Adding chipper knife sharpening services can help increase revenue and expand your sharpening business offerings.