Crystal Boule Grinder Spindle Assembly from Canada
High-precision spindle assembly for crystal grinders that shape semiconductor boules to exact wafer diameters and grind orientation flats. Features air bearings for vibration-free operation. Classified as parts of wafer preparation equipment under 8442.40.00.00.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include OEM part numbers and machine model compatibility in commercial invoice
• Certify spindle runout specs (<1 micron) to substantiate semiconductor precision classification
• Bundle with maintenance kits only if sold as complete replacement sets to avoid set classification issues