Dia. 4mm-12mm Red Corundum Grinding Stone Heads 3mm Shank Mounted Abrasive Wheel Metal Deburring Mould Polishing Dressing

Dia. 4mm–12mm Red Corundum Mounted Grinding Stone Heads (3mm Shank)

Industrial-grade red corundum (aluminum oxide) mounted grinding stone heads engineered for high-speed rotary tools, die grinders, and micro-motors. Featuring high-purity aluminum oxide abrasive grains with a Mohs hardness of 9 and vitrified ceramic bonding, delivering excellent self-sharpening performance, stable grinding efficiency, and high wear resistance.

Technical Specifications

• Product Type: Mounted Grinding Stone Heads / Abrasive Mounted Points
• Abrasive Material (研磨材料): Red Corundum / High-Purity Aluminum Oxide (Al₂O₃ 94%–97%, Mohs Hardness 9)
• Bonding Matrix: High-strength vitrified ceramic bond
• Shank Diameter: Standard 3 mm (approx. 1/8") precision-ground solid steel mandrel
• Available Head Diameters: 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm
• Head Geometries:
  • Cylinder Shape: Flat-end profile optimized for flat surface leveling, internal bore deburring, and slot grinding.
  • Bullet Shape: Pointed conical tip optimized for intricate contours, mold cavities, beveling, and spot dressing.
• Sanding & Grinding Applications (打磨应用): Metal deburring, mould cavity polishing, weld seam dressing, edge trimming, and surface defect removal
• Suitable Workpiece Materials (适用材料类型): Ferrous metals, carbon steel, alloy steel, tool steel, cast iron, and general hardware metals
• Tool Compatibility: Rotary die grinders, Dremel-compatible rotary tools, pneumatic air grinders, flexible shaft carvers, and electric mini drills with 3mm collets

Key Characteristics & Application Guide

• Consistent Self-Sharpening Cut: The vitrified red corundum abrasive continuously micro-fractures during operation to expose fresh cutting edges, maintaining consistent grinding performance throughout product life.
• Balanced Toughness & Hardness: Delivers controlled cutting action on hard ferrous metals without excessive glazing or premature wheel breakdown.
• Precision Deburring & Mold Dressing: Ideal for deburring stamped parts, trimming casting flash, cleaning machined holes, and smoothing tool & die cavities.