Precision Roller Set for Wafer Lapping Machine Bearings from China
Matched set of super-precision cylindrical rollers for bearings in wafer lappers that achieve mirror-surface flatness before device fabrication. Silicon nitride coated for contamination-free operation in cleanrooms. Part of 8482.99.65.60 for semiconductor wafer preparation bearings.
Duty Rate — China → United States
40.8%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Include cleanroom certification (ISO 3 compatible) and coating specs for classification
• Specify roller diameter tolerances (<1μm) proving semiconductor precision requirement
• Bundle with complete bearing assembly documentation if imported as maintenance kit