Crystal Puller Centrifuge Spindle from Japan
Precision-ground spindle for driving rotors in centrifuges used with Czochralski crystal growers in semiconductor production. Classified 8421.91.60.00 as other centrifuge parts for maintaining rotational balance during boule purification steps. High-tolerance machining prevents vibration-induced defects.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Supply dimensional tolerance certificates (micron-level) to confirm part specificity
• Pair with end-user letters from semiconductor fabs to prevent general machinery classification