12А2-20 dish grinding wheels 125x3x2x16x32 P B2-01 100% ACH M 4.0

The 12A2-20 dish grinding wheel is a high-precision superabrasive tool designed for surface grinding, tool sharpening, and relief grinding. With a dish-shaped profile and a 20° angle, this wheel is specifically optimized for high-accuracy tool grinding, precision sharpening of cutting tools, and fine finishing of hard materials.

Constructed with diamond or cubic boron nitride (CBN) abrasives, the 12A2-20 wheel ensures exceptional cutting efficiency, extended tool life, and superior heat dissipation, making it ideal for use on CNC tool grinders, manual tool grinding machines, and high-precision machining centers.

Key Features & Benefits

• Dish-Shaped Profile with a 20° Angle for Precision Grinding

  • The shallow dish angle enables precise grinding of clearance angles and fine surface finishing.
  • Enhanced wheel stability reduces vibration, ensuring superior accuracy and repeatable results.

• Optimized for Tool & Cutter Sharpening

  • Designed for resharpening carbide and HSS tools, including end mills, drills, and inserts.
  • Maintains sharp cutting edges, increasing tool performance and longevity.

• High Abrasive Efficiency & Edge Retention

  • Available in diamond and CBN variants, providing superior wear resistance and self-sharpening properties.
  • Extended grinding performance reduces downtime and improves machining consistency.

• Minimal Heat Generation & Improved Surface Finish

  • Advanced bond formulations enhance coolant penetration, reducing thermal damage, burns, and microcracks in the workpiece.
  • Achieves ultra-smooth surface finishes for high-precision machining applications.

• Long Tool Life & Cost Efficiency

  • Highly durable bond structures extend tool lifespan, lowering replacement costs.
  • Supports high-speed grinding while maintaining precise control over material removal.

Material Compatibility

The 12A2-20 dish grinding wheel is engineered for high-precision machining of ultra-hard materials, ensuring optimal cutting performance in industrial tooling, aerospace, and high-tech engineering applications.

Diamond Bond (for Non-Ferrous & Hard Non-Metallic Materials)

• Tungsten carbide tools and wear-resistant components
• Ceramics (Alumina, Zirconia, Silicon Carbide, etc.)
• Glass and optical components
• Composites and carbon fiber-reinforced materials
• Semiconductor substrates (silicon wafers, quartz, sapphire, etc.)

CBN Bond (for Ferrous Materials & Hardened Steels)

• High-speed steel (HSS) and tool steels
• Powder metallurgy components
• Superalloys (Inconel, titanium alloys, cobalt-based alloys, hardened stainless steel)
• Hardened cast iron and high-carbon steels

Applications

• Tool & Cutter Grinding

  • Used in CNC and manual tool grinders for sharpening drills, end mills, reamers, and carbide inserts.
  • Ensures sharp, precise relief angles, improving cutting tool efficiency and lifespan.

• Surface Grinding & Profile Grinding

  • Ideal for grinding flat surfaces and profiles in mold, die, and high-precision machining applications.
  • Delivers smooth, chip-free finishes on hard materials.

• Automotive & Aerospace Component Grinding

  • Used for precision grinding of hardened steels and superalloy components such as engine parts, gears, and turbine blades.
  • Ensures tight tolerances and high dimensional accuracy.

• Glass, Optical & Semiconductor Processing

  • Provides fine, mirror-like finishes in optical lenses and semiconductor wafer grinding.

Available Bond Types & Their Applications

• Resin Bond

  • Best for precision grinding, tool sharpening, and finishing operations.
  • Provides self-sharpening properties, reducing grinding forces and improving efficiency.

• Metal Bond

  • Highly durable and wear-resistant, ideal for profile retention and high-stock removal applications.
  • Used for grinding carbide, ceramics, and glass in demanding environments.

• Vitrified Bond

  • Offers high porosity for better coolant flow, improving heat dissipation and preventing workpiece burns.
  • Ideal for cylindrical and surface grinding of hardened steels and superalloys.

• Electroplated Bond

  • Provides sharp cutting action and aggressive material removal, making it suitable for high-speed precision grinding and intricate profile shaping.

Recommended Operating Parameters

• Grinding Speed – Typically 20–35 m/s, depending on bond type and workpiece material.
• Coolant Use – Strongly recommended (oil-based for carbide tool grinding, water-based for glass and ceramics) to extend tool life and enhance grinding performance.
• Feed Rate – Adjusted for high-precision, low-damage material removal.
• Dressing Requirements – Minimal dressing needed, thanks to the self-sharpening properties of superabrasive grains.

Conclusion

The 12A2-20 dish grinding wheel is a high-performance, precision grinding tool optimized for tool sharpening, surface finishing, and profile grinding applications. Its dish-shaped profile with a 20° angle ensures superior control, accuracy, and stability, making it an essential tool in CNC tool grinding, aerospace, automotive, and high-tech industries.

With exceptional cutting performance, extended tool life, and high-quality surface finishes, the 12A2-20 grinding wheel is a top choice for professionals seeking efficiency, durability, and precision in their grinding operations.