Worm Gearbox Bronze Worm Wheel from China
This phosphor bronze worm wheel meshes with a worm screw in a worm gearbox to achieve high-ratio speed reduction with self-locking capability. It qualifies under HTS 8483.90.50 as a part of gearing and other speed changers for conveyor and hoist systems. High wear resistance suits heavy-duty industrial use.
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
• Conduct metallurgical analysis certificates to prove bronze content for correct duty rates
• Document thread pitch and helix angle specs to distinguish from general toothed wheels under 8483.40
• Pair with OEM part numbers from gearbox manufacturers for binding ruling requests