Slip Ring Assembly for Wound Rotor Generators from China
Forged copper-graphite slip ring stack with spring pressure assembly for rotor current transfer in AC generators under 8501.64.0110. Rated for continuous 1000A+ currents. Classified 8503.00.95.46 as principal electrical contact part.
Duty Rate — China → United States
38%
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
9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Import Tips
• Document current density ratings (15-20 A/cm²) and peripheral speed (40 m/s+) matching MW generators
• Include brush compatibility certification for specific slip ring surface treatment
• Provide rotor diameter/stacking pressure specifications linking to target generator models