Precision Timing Gear Set from China
Matched helical or spur gears with exact tooth timing for camshaft drives and indexing tables. Classified HTS 8483.40.90.00 as specialized transmission gearing. Laser-marked timing indicators ensure phase accuracy within 1 arcminute.
Duty Rate — China → United States
37.5%
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
• Provide timing verification certificates and phase angle measurements for customs review
• Specify accumulated positioning error specs (<5 arcminutes typical) confirming precision gearing
• Import matched sets together to maintain timing relationship integrity