8483.40.90.00/Helical Gear Set for Industrial Machinery/China

Helical Gear Set for Industrial Machinery from China

A precision-engineered set of helical gears designed for transmitting motion and torque in heavy industrial machinery such as conveyors and mixers. Classified under HTS 8483.40.90.00 as gearing other than toothed wheels or sprockets, due to its helical tooth configuration for smooth power transmission. Excludes simple toothed wheels entered separately.

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]
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Import Tips

• Verify material composition (e.g

• steel alloy) and provide engineering drawings to confirm classification as 'other gearing' not qualifying for specific exclusions

• Include detailed invoices specifying gear module, pitch, and application to avoid misclassification as parts of specific machines

• Ensure compliance with ASME standards for gear tolerances to prevent customs holds on quality grounds