Worm Gear for Reducer Drive
Screw-like worm gear paired with a wheel in right-angle speed reducers for high torque applications. HTS 8483.90.80 covers it as an 'Other' toothed wheel presented separately for gearing systems. Used in conveyors and lifts for motion conversion.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as part of a complete gear box or speed changer
Assembled gearboxes have their own heading; separate parts remain in parts subheadings.
If part of industrial engine or motor assemblies
Parts for engines (Chapter 84 heading 8412) may apply if end-use is engine-specific rather than general transmission.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include helix angle and module specs in invoices to confirm gearing function over plain screws
• Obtain supplier affidavits verifying not plain shaft bearings to prevent reclassification
• Avoid bulk packaging that suggests sets; import as individual elements to stay in 8483.90.80
Related Products under HTS 8483.90.80
Rack Gear for Linear Motion
Straight rack gear with teeth for converting rotary to linear motion in actuators and CNC machines. HTS 8483.90.80 as 'Other' separately presented toothed transmission element. Precision-ground for rack-and-pinion systems.
Sector Gear for Partial Rotation
Segmented sector gear for limited-angle applications in valves and indexing tables. Falls under HTS 8483.90.80 'Other' toothed wheels presented separately. Custom arc lengths for precise control.
Precision Timing Gear for Engines
High-precision timing gear for synchronizing camshaft and crankshaft in internal combustion engines. HTS 8483.90.80 as separate 'Other' transmission toothed wheel. Features involute profile for minimal backlash.
Planetary Gear Carrier
Spider carrier holding planet gears in epicyclic planetary gearsets for compact torque multiplication. Classified HTS 8483.90.80 'Other' as transmission element part presented separately. Used in automatic transmissions and winches.
Flexible Gear Coupling Half
One half of a gear-type flexible shaft coupling with crowned teeth for misalignment tolerance. HTS 8483.90.80 'Other' transmission elements, presented separately not as complete coupling. Absorbs shock in drivelines.
Anti-Backlash Gear for Robotics
Split-gear design with spring preload eliminating backlash for precision robotic positioning. Under HTS 8483.90.80 as 'Other' separately presented toothed wheel for transmissions. Critical for accurate motion control.