8" x 1-1/2" Diamond Steel Hub Flat Grinding Wheel for Lapidary & Glass

The 8" x 1-1/2" Diamond Steel Hub Flat Grinding Wheel is a precision-engineered, heavy-duty electroplated grinding wheel built for commercial lapidary cabbing machines, gemstone preforming, and precision glass cold working. Manufactured with a seamless, balanced solid steel core and an electroplated multi-layer monocrystalline diamond surface, this wheel maintains an uncompromisingly flat, rigid cutting profile for aggressive stock reduction, true face grinding, and crisp bevel execution across hard gemstones, rocks, and glass.

Key Features

• Solid Balanced Steel Hub: High-density machined steel core eliminates centrifugal flex and rotational runout, delivering smooth, vibration-free grinding at full operating speed.
• Premium Electroplated Diamond Matrix: Heavy concentration of sharp monocrystalline diamond particles uniformly bonded to the steel face ensures aggressive, uniform material removal without wheel dishing.
• True Flat Profile Retention: Unlike softer wheels, the rigid steel rim maintains a perfectly flat reference plane throughout its life, making it ideal for edge squaring and precise cabochon back flattening.
• Standard 1" Arbor with Reducer Bushings: Includes precision bushings to adapt effortlessly to 3/4", 5/8", and 1/2" machine arbors.
• Broad Grit Progression: Available from aggressive coarse roughing (60 Grit) up to fine pre-polish preparation (600 Grit).

Applications

• Lapidary Cabbing & Preforming: High-speed rough shaping, slab edge beveling, and back flattening on agate, jasper, quartz, jade, and petrified wood.
• Glass Cold Working & Beveling: Edge grinding, facet grinding, and rapid stock removal on art glass, thick crystal, and fused glass slabs.
• Ceramic & Mineral Specimen Shaping: Precision flattening and squaring of technical ceramics, geode halves, and mineral collector display pieces.

Technical Specifications

• Diameter: 8 inches (200 mm)
• Width: 1-1/2 inches (38 mm)
• Arbor Size: 1 inch (includes 3/4", 5/8", 1/2" reducer bushings)
• Hub Material: Solid Precision-Balanced Machined Steel
• Bond Type: High-Strength Nickel Electroplated Diamond
• Available Grits: 60, 80, 100, 180, 220, 320, 600 Grit
• Recommended Operating Speed: 1400–1800 RPM

Operating Guidelines

• Always operate with continuous, generous flood water coolant to lubricate the wheel, suppress dust, and flush rock swarf.
• Apply light to moderate hand contact; allow the diamond abrasive to grind naturally without excessive pushing.
• Dry and clean the steel hub and rim after use to protect against moisture-induced oxidation.