5 Technical Criteria to Consider When Choosing an Grinding Discs

Grinding Wheel Selection: The Right Wheel, Efficient Processing

Choosing the right abrasive wheel for grinding operations is critical for both surface quality and wheel life. Inappropriate wheel selection can damage the workpiece and cause unwanted vibration and heating in the equipment.

Here are 5 basic criteria to consider when making your choice:

1. Abrasive Type

The content of the stone should be determined according to the type of material to be processed:

• A (Alumina): Mild steels and castings

• WA (White Alumina): Hardened steels

• C (Silicon Carbide): Cast iron, aluminum, brass

• CBN / Diamond: Hard alloys, carbide, ceramics

2. Hardness Level

General rule:

• Hard material = Soft stone

• Soft material = Hard stone

As the hardness of the stone increases, its self-cleaning ability decreases.

3. Grain Size (Granule)

• Fine grain (60–120): High surface quality, low stock removal

• Coarse grain (24–46): Fast stock removal, lower surface quality

4. Connector Type

• Vitrified (V): Hard, brittle structures; general grinding

• Resin (B): More elastic, heat resistant; ideal for cutting & grinding discs

5. Shape and Size of the Stone

The diameter, thickness and spindle hole of the stone must be fully compatible with the machine. In addition, the appropriate form must be selected according to applications such as surface, cylindrical or channel grinding.

Conclusion:

Choosing the right wheel means longer wheel life, fewer workpiece errors and a more stable grinding process. If in doubt, our technical team will be happy to help you determine the appropriate wheel structure.