Used Crystal Boule Grinder
A rebuilt grinder for shaping silicon crystal boules to precise diameters and flats indicating conductivity type. It works on cermets without removing material, and as a used machine-tool, it falls under tariff item 8463.90.00 for other machine-tools for working metal or cermets without removing material.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the grinder is designed for glass or ceramic materials
Grinders for glass, ceramics or similar materials fall under heading 84.64.
If the machine performs a specific function other than grinding
Machines with a specific function not covered by other headings may fall under 84.79.
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
• Document the rebuild and the machine's role in wafer preparation
• Confirm that the grinding process is classified as working without material removal
• Check if the grinder qualifies for any duty relief programs for semiconductor equipment
Related Products under Tariff item 8463.90.00
Benchtop Metal Beading Machine
A benchtop metal beading machine creates decorative and strengthening beads on sheet metal edges via rotary forming, without removing material. This machine falls under this tariff item as a machine-tool for working metal by deformation, specifically beading, which is a common metalworking process.
CNC Laser Cutting Machine
A CNC laser cutting machine uses a high-powered laser beam to melt and vaporize metal, producing precise shapes in sheets without traditional material removal via cutting tools. It falls under this tariff item as a machine-tool for working metal without removing material, as the process relies on thermal deformation and vaporization rather than mechanical cutting.
CNC Laser Tube Bender
A precision machine tool that bends metal tubes using laser measurement and CNC control without removing material, ideal for automotive exhaust systems. It falls under tariff item 8463.90.00 as it works metal through deformation processes without material removal.
CNC Rotary Metal Swaging Machine
A CNC-controlled rotary swaging machine that reduces the diameter of metal tubes through high-speed hammering, without removing any material. This deformation process falls under tariff item 8463.90.00, which covers machine-tools for working metal without removing material.
CNC Router Spindle for Small Metal Parts
A high-speed spindle unit used in compact CNC routers for milling and engraving soft metals like aluminum without material removal through cutting. It falls under tariff item 8463.90.00 as a machine-tool component for working metal or cermets without removing material, specifically for forming or deformation processes.
Electro-Hydraulic Metal Stamper
An electro-hydraulic metal stamper that uses high-speed electric discharge to generate hydraulic pulses for deep drawing metal sheets without dies. This innovative stamping process works metal without removing material, placing it under tariff item 8463.90.00.