8483.90.50.20/Wind Turbine Main Gearbox Torque Arm/Japan

Wind Turbine Main Gearbox Torque Arm from Japan

Heavy-duty fabricated steel arm that mounts the main gearbox to the wind turbine nacelle bedplate, absorbing torque reactions up to 10 million Nm. Falls under HTS 8483.90.50.20 as a structural part of wind turbine gear boxes and speed changers.

Duty Rate — Japan → United States

12.5%

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

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Import Tips

• Submit finite element analysis (FEA) reports demonstrating torque capacity for wind turbine service

• Classify as gearbox part rather than nacelle structure (7308) by proving direct attachment to gearbox housing

• Comply with AWS D1.1 welding standards certification for structural integrity