Slip Ring Assembly for Wound Rotor Generators from Japan
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 — Japan → United States
28%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) of U.S. note 16 to this subchapter
9903.03.060%Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
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