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.
Greg –
My AV-56 machine arrived Monday in perfect condition. The machine has already made itself at home in my shop and I have started sharpening my yellow jacket teeth. It is exactly what I wanted and does a beautiful job. It was a leap of faith for a small operator like myself to import something from the exact opposite side of the world. I thank you for your patience with this process and appreciate your professionalism. I look forward to years of great service.