Parts of gear boxes and speed changers for wind turbines
Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof: > Toothed wheels, chain sprockets and other transmission elements presented separately; parts: > Parts of gearing, gear boxes and other speed changers > Parts of gear boxes and speed changers for wind turbines
Duty Rate (from China)
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
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)
Products classified under HTS 8483.90.50.20
Wind Turbine Planetary Gearbox Housing
This robust cast iron housing encases the planetary gears within a wind turbine's main gearbox, transmitting torque from the rotor to the generator. It falls under HTS 8483.90.50.20 as a dedicated part of gearboxes for wind turbines, designed to withstand high radial and axial loads in harsh offshore environments.
Wind Turbine High-Speed Gear Shaft
Precision-forged alloy steel shaft with helical gears that connects the gearbox output to the generator in wind turbines, rated for speeds up to 1800 RPM. Classified under HTS 8483.90.50.20 due to its integral role in wind turbine speed changers for power transmission.
Wind Turbine Gearbox Bearing Retainer Ring
Specialized steel retainer ring that secures large roller bearings within wind turbine gearbox housings, engineered for extreme shock loads and vibration. It qualifies for HTS 8483.90.50.20 as an essential component of wind turbine speed changing mechanisms.
Wind Turbine Main Gearbox Torque Arm
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.
Wind Turbine Gearbox Oil Pump Mounting Bracket
Precision CNC-machined aluminum bracket that positions the lubrication oil pump within wind turbine gearboxes, ensuring reliable cooling under full load. Classified in HTS 8483.90.50.20 for its role in maintaining wind turbine speed changer functionality.
Wind Turbine Parallel Shaft Gearbox Coupler
High-strength forged coupler connecting parallel shafts within multi-stage wind turbine gearboxes, transmitting over 5 MW power with minimal backlash. HTS 8483.90.50.20 applies as a critical internal transmission element for wind turbine speed changers.
Wind Turbine Gearbox Cooling Finned Cover
Die-cast aluminum cover with integrated cooling fins for wind turbine gearbox housings, facilitating heat dissipation from 100°C+ oil temperatures. Classified under HTS 8483.90.50.20 as part of wind turbine speed changing equipment enclosures.
Wind Turbine Gearbox Intermediate Shaft Bearing Cap
Precision machined steel cap securing cylindrical roller bearings on intermediate shafts in wind turbine gearboxes, precision-ground for micron-level tolerances. HTS 8483.90.50.20 designation reflects its specialized role in wind speed changers.
Wind Turbine Multi-Stage Gearbox Spacer Ring
Hardened steel ring maintaining precise axial spacing between gear stages in compound wind turbine gearboxes, critical for gear mesh alignment. Falls under HTS 8483.90.50.20 as essential internal part of wind turbine speed changers.
Wind Turbine Gearbox Vibration Damper Mount
Elastomer-bonded steel mount isolating gearbox vibration from turbine structure, extending bearing life in turbulent wind conditions. Classified HTS 8483.90.50.20 for wind turbine gearbox mounting components.