8" x 1-1/2" 60 Grit Lapidary Diamond Hard Flat Grinding Wheel for Gemstone Shaping

The 8" x 1-1/2" 60 Grit Lapidary Diamond Hard Flat Grinding Wheel is an industrial-grade electroplated roughing wheel engineered for standard 8-inch lapidary cabbing machines, heavy gemstone preforming, and precision glass cold working. Featuring a precision-balanced composite core and a heavily concentrated 60-grit monocrystalline diamond cutting surface, this wheel delivers high-velocity material removal on hard stones such as agate, jasper, quartz, jade, and petrified wood while running smooth and vibration-free.

Key Features

• Aggressive 60 Grit Diamond Surface: Heavy concentration of electroplated monocrystalline diamond particles strips bulk stock rapidly and trues rough gemstone preforms with minimal effort.
• True-Running Balanced Core: Precision-balanced construction prevents harmonic vibration and chatter at operational speeds, protecting machine bearings and ensuring flat, controlled cuts.
• Flat 1-1/2" Grinding Plane: The rigid 1-1/2" wide face provides an expansive, uniform contact area for squaring rock slab edges, leveling specimen bases, and forming cabochon profiles.
• Standard 1" Arbor with Reducer Bushings: Includes precision bushings to accommodate 3/4", 5/8", and 1/2" machine shafts.

Applications

• Gemstone Preforming & Cabbing: Rapidly establishing primary cabochon silhouettes and initial dome geometry on hard minerals (Mohs 6.5–9).
• Glass Cold Working & Leveling: Grinding sawed thick glass slabs, beveling artistic glass pieces, and truing bottle bases.
• Specimen Back-Flattening: Squaring geode slices, fossil displays, and mineral specimens prior to intermediate sanding.

Technical Specifications

• Diameter: 8 inches (200 mm)
• Width: 1-1/2 inches (38 mm)
• Grit: 60 Grit (Extra Coarse Roughing)
• Arbor Size: 1 inch (includes 3/4", 5/8", 1/2" reducer bushings)
• Bond Type: Heavy-Duty Nickel Electroplated Diamond
• Recommended Operating Speed: 1400–1800 RPM

Operating Guidelines

• Always use continuous water coolant to flush rock sludge, prevent diamond glazing, and eliminate airborne mineral dust.
• Let the aggressive diamond grit do the work; apply gentle, consistent hand pressure rather than heavy force.
• Clean and dry the wheel after use to protect the hub and diamond bond integrity.