Centrifuge Rotor Assembly
> A replacement rotor assembly for laboratory centrifuges used in semiconductor wafer processing to separate particles from liquids during crystal boule preparation. This component is a part of a centrifuge and falls under tariff item 8421.91.90 as "other" parts, excluding drying chambers for clothes-dryers and related furniture.
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 rotor is exclusively for semiconductor manufacturing equipment
Parts of machines for semiconductor production may fall under heading 84.86.
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 rotor assembly under 8421.91.90 as a part of a centrifuge, and ensure the invoice describes it as such
• If the rotor is for a specific semiconductor application, be prepared to demonstrate that it is not a complete machine
• Keep documentation of the centrifuge model and intended use for CBSA verification
Related Products under Tariff item 8421.91.90
Centrifugal Dryer Basket for Wafers
> A perforated titanium basket designed for centrifugal dryers that remove process fluids from semiconductor wafers after polishing. This part is essential to the drying function of the centrifuge and is classified under tariff item 8421.91.90 as "other" parts of centrifuges, not being a drying chamber for clothes-dryers or furniture for clothes-dryers.
Centrifuge Safety Shroud
> A carbon fiber safety shroud designed to contain rotor fragments in case of failure during high-speed semiconductor slurry separation. This protective part is integral to the safe operation of a centrifuge and is classified under tariff item 8421.91.90 as "other" parts of centrifuges.
Crystal Puller Centrifuge Spindle
> A precision-ground spindle for driving rotors in centrifuges used with Czochralski crystal growers in semiconductor production. This component is a part of a centrifuge and falls under tariff item 8421.91.90 as "other" parts, not being a drying chamber for clothes-dryers.
High-G Centrifuge Bearing Housing
> An aluminum housing for precision bearings in high-G force centrifuges used for float zone crystal purification in semiconductors. This part maintains alignment under extreme speeds and is classified under tariff item 8421.91.90 as "other" parts of centrifuges.
Lab-Scale Wafer Centrifuge Drive Shaft
> A coupled drive shaft for laboratory centrifuges processing small wafer batches in R&D crystal grinding. This part is essential for the centrifuge's operation and is classified under tariff item 8421.91.90 as "other" parts of centrifuges.
Semiconductor Centrifuge Bowl
> A stainless steel centrifuge bowl for high-speed separation in semiconductor wafer lapping slurry purification systems. This component is a part of a centrifuge and falls under tariff item 8421.91.90 as "other" parts, not being a drying chamber for clothes-dryers.