Numerically Controlled Wafer Thickness Grinder
This precision numerically controlled grinder maintains uniform wafer thickness across large diameters (300mm+) for semiconductor processing, using diamond wheels on metal surfaces. It is a machine-tool for finishing metal or cermets by grinding, falling under heading 84.60. The numerical control feature places it in tariff item 8460.24.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the grinder lacks numerical control
This alternative covers other grinding machines without numerical control, which may apply if the control system is manual or mechanical.
If the grinder is designed solely or principally for semiconductor wafer production
Under chapter note 11 (D), machines for semiconductor manufacture are classified in heading 84.86, overriding 84.60.
If the machine performs lapping or polishing in addition to grinding
This item covers other finishing machines in heading 84.60, including lapping or polishing, if the primary function is not solely grinding.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify the grinder under 8460.24.00 as a numerically controlled grinding machine for metal or cermets, and include the model and control specifications in your customs documentation
• Be prepared to demonstrate that the machine is not a semiconductor manufacturing tool under heading 84.86, unless it is used solely for that purpose
• Consult the CBSA's tariff classification advice service for a binding ruling if uncertain
Related Products under Tariff item 8460.24.00
CNC Belt Grinding Machine
A CNC belt grinding machine uses an abrasive belt under numerical control to finish contoured metal surfaces such as aerospace forgings, ensuring consistent material removal. It falls under tariff item 8460.24.00 as a numerically controlled grinding machine for metal, not involving gear cutting.
CNC Camshaft Grinding Machine
A CNC camshaft grinding machine is a numerically controlled grinder for camshaft lobes and journals, achieving precise profiles via abrasive wheels. It qualifies under tariff item 8460.24.00 as an other numerically controlled grinding machine for metal, excluding gear grinding.
CNC Centerless Grinding Machine
A CNC centerless grinding machine is numerically controlled and removes material from cylindrical metal parts using abrasive wheels to achieve precise diameters and finishes. It falls under tariff item 8460.24.00 as an other numerically controlled grinding machine for metal.
CNC Crankshaft Grinding Machine
A CNC crankshaft grinding machine is a numerically controlled grinder for engine crankshaft journals and pins, ensuring balance and diameter precision via abrasives. It falls under tariff item 8460.24.00 as an other numerically controlled grinding machine for metal, not gear-related.
CNC Creep Feed Grinding Machine
A CNC creep feed grinding machine uses slow feed rates and high stock removal under numerical control for deep slots in turbine blades and aerospace parts. It qualifies under tariff item 8460.24.00 as a numerically controlled grinding machine for metal, excluding gear grinding.
CNC Cylindrical Grinding Machine
A CNC cylindrical grinding machine performs external and internal grinding of cylindrical metal components like bearings and pistons using abrasive wheels for high-precision finishing. It matches tariff item 8460.24.00 as an other numerically controlled grinding machine for metal.