Wind Turbine Main Gearbox from Canada
The primary gearbox in a horizontal axis wind turbine that steps up the low rotational speed of the rotor shaft to the high speed required by the generator, typically achieving ratios of 50:1 to 100:1. It falls under HTS 8483.40.50.20 as a fixed ratio speed changer specifically designed for wind turbines per statistical note 6 to chapter 84. These gearboxes handle extreme torque loads from variable wind conditions.
Duty Rate — Canada → 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
Import Tips
• Obtain wind turbine-specific engineering certifications from manufacturers; declare exact gear ratios and torque ratings; ensure compliance with IEC 61400 standards for turbine components