Moresuperhard manufactures high-performance CBN cutting discs for precision cutting of hardened steel and other high-hardness ferrous materials.
Cubic Boron Nitride (CBN) is an advanced superabrasive particularly suitable for machining ferrous materials. With excellent hardness, thermal stability and wear resistance, CBN abrasive is widely used in demanding industrial cutting applications.
We provide three main bond systems: resin bond, metal bond and electroplated CBN cutting discs. Different abrasive specifications and bond formulations can be selected according to workpiece hardness, cutting speed, machine conditions and required cutting quality.

CBN cutting discs are available in different diameters and thicknesses for precision cutting machines. The following table presents commonly referenced market configurations for thin CBN cutting discs.
| Outer Diameter | Thickness | Bore Diameter |
|---|---|---|
| 75 mm | 0.2–0.9 mm | 12.7 mm |
| 100 mm | 0.4–0.9 mm | 12.7 mm |
| 125 mm | 0.5–1.0 mm | 12.7 mm |
| 150 mm | 0.5–1.0 mm | 12.7 mm |
| 175 mm | 0.7–0.9 mm | 12.7 mm |
| 200 mm | 0.8–1.2 mm | 12.7 / 25.4 / 32 mm |
| 250 mm | 1.0–1.3 mm | 32 mm |
| 300 mm | 1.4–2.0 mm | 32 mm |
| 350 mm | 1.8 mm | 32 mm |
Note: These dimensions are market-reference configurations, not a confirmation that every size combination is available for every bond type. Actual specifications depend on blade construction, machine requirements and application conditions. Please contact us for production feasibility.

| Parameter | Specifications |
| Abrasive Type | Cubic Boron Nitride (CBN) |
| Bond Types | Resin Bond, Metal Bond, Electroplated Bond |
| Grit Size | Coarse, Medium and Fine Grades |
| Outer Diameter | 75–350 mm, Customized Diameters Available |
| Disc Thickness | Multiple Thickness Options According to Cutting Requirements |
| Bore Diameter | 12.7 mm, 25.4 mm, 32 mm or Customized |
| Applications | Hardened Steel, High-Speed Steel (HSS), Tool Steel and Bearing Steel |
CBN cutting discs are suitable for precision cutting of various hardened ferrous materials, including hardened steel, tool steel, high-speed steel and bearing steel.
| Material Category | Suitable Materials |
| Hardened Steel | Quenched and tempered steel; Heat-treated alloy steel; High-hardness steel components |
| Tool Steel | Cold work tool steel; Hot work tool steel; Die steel; Mold steel |
| High-Speed Steel (HSS) | M2 high-speed steel; M35 high-speed steel; M42 high-speed steel |
| Bearing and Alloy Steel | Hardened bearing steel; Chrome alloy steel; Other high-hardness ferrous alloys |
The appropriate CBN cutting disc should be selected according to workpiece hardness, material composition, cutting conditions and machine requirements.

Different hardness levels require different abrasive characteristics and bond formulations. Provide the actual workpiece hardness in HRC when requesting a quotation.
Thin CBN cutting discs are suitable for applications requiring narrow kerf widths and reduced material loss. Thicker discs generally provide greater structural rigidity.
Resin, metal and electroplated bonds have different abrasive retention and cutting characteristics. The selection should consider cutting speed, feed rate, cooling conditions and required service life.
Check the machine’s maximum operating speed, spindle interface, flange dimensions and permitted blade diameter before selecting a cutting disc.
Cutting depth, feed rate, workpiece clamping and coolant supply all influence cutting performance and blade life.

Moresuperhard specializes in manufacturing diamond and CBN abrasive tools for precision machining applications.
Our goal is to provide reliable CBN cutting solutions tailored to your production requirements.
CBN cutting discs are mainly used for ferrous materials, including hardened steel, high-speed steel, tool steel, bearing steel and heat-treated alloy steel.
Resin bond discs offer flexible formulation options and good cutting performance. Metal bond discs provide strong abrasive retention and wear resistance. Electroplated discs feature a single abrasive layer with high grain protrusion and aggressive cutting characteristics.
Common market-reference diameters include 75 mm, 100 mm, 125 mm, 150 mm, 175 mm, 200 mm, 250 mm, 300 mm and 350 mm. Thickness and bore diameter depend on the blade construction and machine requirements.
Yes. CBN is particularly suitable for high-hardness ferrous materials. The appropriate disc specification should be selected according to steel composition, hardness, machine conditions and cutting requirements.
Yes. Moresuperhard can evaluate customized diameters, thicknesses, bore dimensions, abrasive specifications and bond formulations according to customer drawings and application requirements.
Please provide workpiece material, hardness, required disc diameter, thickness, bore diameter, cutting machine model and operating conditions. Technical drawings are also welcome.
Looking for reliable CBN cutting discs for hardened steel, high-speed steel or tool steel?
Send Moresuperhard your workpiece details, cutting requirements or technical drawings. Our team can help evaluate suitable CBN abrasive specifications and bond formulations.