8" x 2" 220 Grit Diamond Plastic Hub Textured Grinding Wheel for Lapidary & Glass

The 8" x 2" 220 Grit Diamond Plastic Hub Textured Grinding Wheel is an extra-wide fine shaping and pre-polishing wheel engineered for standard 8-inch vertical cabbing units and heavy-duty lapidary bench grinders. Built on a vibration-absorbing molded plastic hub electroplated with high-grade 220-grit monocrystalline diamonds in a cross-hatch textured grid, this wheel provides exceptional surface smoothing across wide contact areas while eliminating hydrodynamic hydroplaning and stone drag on agate, jasper, quartz, jade, ceramic, and art glass.

Key Features

• Cross-Hatch Textured Diamond Pattern: Interrupted surface grid facilitates continuous water coolant flow directly under the contact patch, flushing away swarf instantly and preventing diamond glazing.
• Fine 220-Grit Diamond Electroplating: High-precision monocrystalline diamond distribution smooths coarse grinding marks, preparing flat surfaces and large cabochons for resin-bond smoothing wheels.
• Extra-Wide 2" Grinding Face: Offers 33% more surface area than standard 1-1/2" wheels, accommodating larger stones, glass vessels, and accelerating workpiece leveling.
• Vibration-Damping Plastic Hub: Precision-molded plastic core absorbs rotational resonance, ensuring smooth, chatter-free operation at 1400–1800 RPM.
• Reduced Workpiece Drag & Heat: The textured channels eliminate stone suction and hydroplaning, keeping delicate glass and gemstones cool during continuous grinding.
• Standard 1" Arbor with Reducer Bushings: Bored to 1" and supplied with precision bushing spacers to adapt seamlessly to 3/4", 5/8", and 1/2" machine arbors.

Applications

• Gemstone Pre-Polishing & Cabbing: Pre-polishing wide cabochons, refining dome curvatures, and smoothing slab faces on agate, jasper, and quartz.
• Glass Cold Working & Bevel Finishing: Refining beveled edges, smoothing saw cuts, and removing fine edge chips on large art glass and architectural glass panels.
• Ceramic & Mineral Smoothing: Precision fine shaping and surface smoothing on specimen bases and technical ceramics.

Technical Specifications

• Diameter: 8 inches (200 mm)
• Width: 2 inches (50 mm)
• Grit: 220 Grit (Fine Shaping / Pre-Polishing)
• Core Material: High-Impact Molded Plastic Hub
• Pattern: Cross-Hatch Textured / Interrupted Grid
• Bond Type: Electroplated Diamond
• Arbor Size: 1 inch (includes 3/4", 5/8", 1/2" reducer bushings)
• Recommended Operating Speed: 1400–1800 RPM

Operating Guidelines

• Always operate with adequate continuous water coolant to keep the diamond cool and flush grinding swarf out of the textured channels.
• Apply light to moderate hand pressure; allow the aggressive textured diamond grid to cut without forcing the workpiece.
• Avoid concentrated grinding directly on sharp 90-degree corners to protect the electroplated edge rim.