Wind Turbine Main Gearbox Torque Arm from China
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 — 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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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