Worm Gear Reducer from China
Worm wheel and screw gear combination providing high reduction ratios and self-locking capability for conveyor drives and winches. HTS 8483.40.90.00 covers this orthogonal gearing system excluded from toothed wheel or sprocket categories. Typically bronze worm wheel mated with hardened steel worm.
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
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 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(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Specify worm lead, wheel teeth count, and center distance in documentation to confirm 'other gearing' status
• Include efficiency ratings (>70% typical) and load capacity to support industrial application claims
• Watch for reclassification if imported with mounting base as complete speed changer