Dia. 4-12mm Rubber Abrasive Grinding Polishing Heads for Metal Deburring Mold Finish

Technical Specifications

• Product Type: Rubber-Bonded Abrasive Mounted Polishing Heads / Points
• Head Diameters: 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm
• Head Geometries:
  • Cylinder Shape: Flat-top profile ideal for flat surfaces, straight channels, right-angle corners, and bottom cavity polishing.
  • Bullet / Pointed Shape: Tapered conical tip engineered for narrow crevices, curved grooves, holes, and concave contour finishing.
• Shank Diameter: Standard 3 mm (1/8" compatible) nickel-plated solid steel mandrel
• Bonding Matrix: Elastic synthetic vulcanized rubber infused with fine micro-abrasive grains
• Abrasive Material: Fine-grade Silicon Carbide / Aluminum Oxide abrasive blend in rubber matrix
• Sanding Application: Precision Mold & Die Cavity Finishing, Inner Hole Deburring, Edge Radius Blending, Micro-Scratch Smoothing, Fine Metal Polishing
• Suitable Workpiece Materials: High Carbon Tool Steel, Alloy Die Steel, Stainless Steel, Cast Iron, Brass, Bronze, Aluminum, Titanium, and Jewelry Precious Metals
• Tool Compatibility: Compatible with Dremel, rotary die grinders, flexible shafts, bench drills, and CNC high-speed engraving spindles
• Recommended Operating Speed: Optimal 5,000 – 15,000 RPM (Do not exceed 25,000 RPM; use light contact pressure for maximum lifespan)

Key Features & Engineering Highlights

• Elastic Cushioning Matrix: The resilient rubber binder absorbs micro-shocks and chatter, preventing workpiece gouging or over-cutting while providing an exceptionally smooth satin finish.
• Uniform Abrasive Dispersion: Micro-abrasive grains are thoroughly compounded throughout the entire rubber body, delivering consistent cutting action down to the steel shank as the head slowly dresses itself.
• Clean, Dust-Controlled Operation: Compared to bonded ceramic stones, rubber-bonded abrasives produce minimal loose abrasive dust and generate less frictional heat during fine surface conditioning.
• Concentric High-Precision Mandrel: Heat-treated 3mm steel shank ensures low runout at high rotary speeds, ensuring fine control during intricate mold repairing and deburring.

Applications & Workshop Guidelines

• Injection Mold & Tool Making: Removing EDM spark erosion patterns, cutter machining marks, parting line flashes, and repairing precision stamping dies.
• Precision Mechanical Deburring: Internal bore deburring, hydraulic valve port chamfering, cross-hole edge rounding, and gear tooth finishing.
• Jewelry & Instrument Making: Smoothing welds, pre-polish buffing on brass, silver, titanium, and watch components prior to final mirror compounding.