HS Code for Ceramic grinding wheels

Ceramic grinding wheels are classified under HS code 680422 because they are composed of abrasive grains, such as aluminum oxide or silicon carbide, which are bonded together using a vitrified or ceramic binder. This classification falls under Chapter 68, which covers articles of stone, plaster, cement, and similar materials. Heading 6804 specifically addresses millstones, grindstones, and grinding wheels. The subheading 680422 is designated for those made of other agglomerated abrasives or of ceramics, distinguishing them from those made of natural stone or synthetic diamonds. The classification is determined by the bonding material; in this case, the ceramic bond is created by firing a mixture of clays and fluxes at high temperatures, resulting in a glass-like structure that holds the abrasive particles. These wheels are essential in industrial applications for precision grinding, sharpening, and surface finishing of metals and other hard materials. The HS code remains the same regardless of whether the wheel is used for bench grinders, cylindrical grinding, or surface grinding machines, provided the bonding agent is ceramic. The vitrification process ensures that the wheel maintains high rigidity and can withstand significant thermal stress during operation.

Products Included

• Vitrified bond grinding wheels
• Ceramic-bonded abrasive discs
• Sharpening stones made of ceramic-bonded abrasives
• Honing stones and oilstones
• Internal grinding wheels with ceramic bonding
• Mounted points with ceramic abrasive heads

Common Misclassification

Ceramic grinding wheels are frequently confused with HS code 680421, which is reserved for wheels made of agglomerated synthetic or natural diamond or cubic boron nitride (CBN). While both are abrasive wheels, the distinction lies in the abrasive material itself. Another common error is classifying these under 8207, which covers interchangeable tools for hand tools. However, 6804 is a more specific heading for the grinding wheels themselves, whereas 8207 typically covers the metal bits or cutters that might be used in conjunction with power tools. Additionally, millstones used specifically for grinding grain or seeds are classified under 680410, regardless of their material composition.

FAQ

What is the HS code for ceramic grinding wheels?

The correct HS code for ceramic grinding wheels made of agglomerated abrasives is 680422.

Can these wheels be used for high-speed applications?

Yes, ceramic-bonded wheels are known for their rigidity and ability to maintain their shape under high-speed and high-pressure conditions, making them ideal for precision industrial grinding.