Wind Turbine Main Gearbox Torque Arm from Mexico
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 — Mexico → United States
27.5%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(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