Dia-Pitch Ball Screw for Semiconductor Crystal Pullers from Germany
Dia-pitch ball screw providing ultra-smooth constant velocity motion for Czochralski crystal pullers growing silicon boules. Vibration-damped design per statistical notes, HTS 8483.40.80.00 classification.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Reference statistical note (a)(i) crystal growers in documentation for semiconductor context
• Document ultra-low friction coefficient (<0.003) and velocity uniformity specs
• Include contamination control measures (e.g
• PEEK nut material) for cleanroom use