Crystal Boule Grinder Spindle Assembly
This rotating spindle assembly is a replacement part for crystal grinders that shape semiconductor boules to precise wafer diameters and flats. It is classified under tariff item 8475.90.00 as a part of machines for manufacturing or hot working glass or glassware, which includes equipment for preparing semiconductor wafers.
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 spindle assembly is sold as a separate part for a machine-tool
Parts for machine-tools of Chapter 84 are classified under heading 84.66 when they are identifiable as such.
If the spindle assembly is presented as a general transmission shaft
Transmission shafts and cranks are classified under heading 84.83 when not identifiable as parts of a specific machine.
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
• Ensure the spindle assembly is declared as a part of wafer preparation equipment, not as a standalone machine, to qualify for the parts classification
• Keep documentation showing the specific crystal grinder model it is designed for, as CBSA may request proof of its intended use
• Verify whether the spindle assembly contains any electronic components that could trigger additional classification requirements
Related Products under Tariff item 8475.90.00
Anode Support Fixture for CRT Tubes
Anode support fixture designed to hold and position anodes inside glass envelopes during cathode ray tube assembly. It maintains critical spacing for electron flow, ensuring proper tube function. This fixture is a dedicated part of machines for assembling electric tubes in glass envelopes.
Base Cementing Applicator Nozzle
Precision nozzle for applying adhesive cement to attach metal bases to glass envelope lamps. It is a component of assembly machines that ensures secure, vibration-resistant bonding. This nozzle is specifically designed for lamp assembly machinery.
Czochralski Crystal Puller Spare Gearbox
This precision gearbox is a replacement part for Czochralski crystal pullers used in semiconductor wafer manufacturing to grow monocrystalline silicon boules. It falls under tariff item 8475.90.00 as a part of machines for manufacturing or hot working glass or glassware, which includes crystal growing equipment.
Electrode Press Assembly for Vacuum Tubes
Hydraulic press assembly for sealing electrodes into glass envelopes of vacuum tubes during assembly. It applies controlled pressure to create hermetic seals, essential for tube integrity. This is a core part of tube manufacturing machines.
Exhaust Manifold for Lamp Evacuation Systems
Multi-port manifold distributing vacuum to multiple glass envelopes in batch lamp assembly. It optimizes throughput in high-volume production by evacuating several envelopes simultaneously. This manifold is a part of evacuation machines for lamp manufacturing.
Exhaust Tube Crimping Tool Assembly
Automated crimping tool for sealing exhaust tubes on glass envelope flashbulbs after gas evacuation. It is critical for maintaining internal pressure and ensuring flashbulb reliability. This tool is a dedicated part of flashbulb assembly machines.