9A3 Double Concave Resin Bond Diamond Grinding Wheel

High Wear-Resistant Double-Cup Diamond Wheel for Carbide & Tool Precision Grinding

Product Overview

This 9A3 double concave resin bond diamond wheel is a high-performance abrasive tool specially designed for precision grinding. Its unique double-cup structure offers excellent chip removal and cooling capabilities, effectively reducing heat buildup and workpiece burn during high-volume production. Adopting hot-pressed sintering technology, it features uniform diamond distribution, outstanding hardness and excellent wear resistance, making it ideal for grinding tungsten carbide tools, hard alloy components and other high-hardness materials.

Key Specifications

Parameter

Details

Wheel Shape

9A3 (Double Concave / Double Cup Grinding Wheel)

Bond Type

Resin Bond

Abrasive Type

Synthetic Diamond

Standard Sizes (D×H×T)

75×20×20, 100×25×25, 125×32×25, 150×32×25, 175×32×25

Grit Size

#80 - #100

Concentration

75% - 125% (Custom available)

Max Operating Speed

25 m/s (Max 3600 RPM)

Precision Tolerance

≤ 0.005mm

Cylindricity Tolerance

 ≤ 0.005mm

Workpiece Material

Tungsten Carbide, Hard Alloy Cutting Tools, Gauges, Ceramic, Optical Glass, Quartz

Suitable Application

Tool Sharpening, Centerless Grinding, Double Disc Grinding, Precision Machining

Customization

Available (Size, Grit, Shape)

Manufacturing Process

Hot-Pressed Sintered

Radial Runout

≤ 0.01mm

Lead Time

7-15 Days

Features & Advantages

✅ Outstanding wear resistance for long service life and low consumption

✅ Double concave design for superior cooling and chip removal, no clogging

✅ High precision with radial runout ≤ 0.01mm for consistent machining results

✅ Sharp self-sharpening performance for high efficiency, less frequent dressing needed

✅ Wide adaptability for various hard materials and grinding processes

Applications & Workpiece Materials

  • Precision grinding of tungsten carbide turning tools, milling cutters, drills and reamers

  • Finishing of precision gauges, measuring tools and cutting inserts

  • Machining of ceramic, optical glass, quartz and other non-metallic hard materials

  • Suitable for centerless grinders, double-disc grinders and tool room precision grinders

If you need a custom solution for special materials or applications, please use the form below to tell us your requirements.

75mm (3") / 100mm (4") / 125mm (5") / 150mm (6") / 175mm (7") / Custom

#80 (Coarse) / #120 (Medium) / #240 (Fine) / #320 (Fine) / #400 (Ultra Fine) / #600 (Ultra Fine) / #1000 (Super Ultra Fine) / Custom

20mm / 25mm / 32mm / Custom

Request a Custom Diamond Wheel Quote

Tell us your grinding requirements below, and our engineering team will send you a tailored quotation within 24 hours.