8" x 1-1/2" 80 Grit Sintered Diamond Grinding Wheel (Metal Bonded)

The 8" x 1-1/2" 80 Grit Sintered Diamond Grinding Wheel (Metal Bonded) is a heavy-duty continuous-rim shaping wheel built for standard 8-inch lapidary cabbing machines, commercial gemstone production, and industrial glass fabrication. Featuring a continuous 5mm deep solid sintered bronze matrix impregnated with 80-grit monocrystalline diamonds, this wheel combines rapid material reduction with controlled shaping precision across agates, jaspers, quartz, petrified wood, and art glass while eliminating the edge blowout and rapid wear associated with thin-plated wheels.

Key Features

• Full 5mm Deep Sintered Rim: Coarse 80-grit monocrystalline diamond abrasive is integrated throughout a solid 5mm bronze metal matrix for decades of heavy production performance.
• Fast Material Removal with Edge Control: Aggressive enough for rapid rough preforming while maintaining controlled, chip-resistant gemstone contours and cabochon girdles.
• Self-Sharpening Diamond Exposure: Controlled metal matrix wear continually introduces sharp, fresh diamond crystals, ensuring peak cutting speed throughout its working lifespan.
• Precision-Balanced Steel Core: Solid steel hub eliminates harmonic vibration and chatter at operating speeds (1400–1800 RPM), extending machine bearing life and delivering superior grinding stability.
• Standard 1" Arbor with Reducer Bushings: Includes precision bushings to adapt to 3/4", 5/8", and 1/2" machine arbors seamlessly.

Applications

• Production Gemstone Preforming: Establishing primary dome contours and outer silhouettes on agate, jasper, jade, quartz, and petrified wood.
• Commercial Glass Fabrication: Grinding sawed thick glass slabs, beveling artistic glass pieces, and truing bottle bases.
• Dense Mineral & Specimen Squaring: Truing slab perimeters, squaring geode slices, and preparing mineral display specimens for fine grinding.

Technical Specifications

• Diameter: 8 inches (200 mm)
• Width: 1-1/2 inches (38 mm)
• Grit: 80 Grit (Coarse Shaping)
• Diamond Layer Depth: 5 mm
• Arbor Size: 1 inch (includes 3/4", 5/8", 1/2" reducer bushings)
• Bond Type: Sintered Metal (Bronze Matrix)
• Recommended Operating Speed: 1400–1800 RPM

Operating Guidelines

• Always operate with continuous, generous flood water lubrication to flush mineral swarf, suppress dust, and prevent diamond matrix glazing.
• Apply steady, moderate hand contact; allow the diamond abrasive to grind naturally without excessive pushing.
• Dress periodically with a dressing stick to maintain optimal sharpness and true rim flatness.