Other
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: > Other: > Other
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 9903.88.05, 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]
Subheadings
Products classified under HTS 8483.90.80
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.
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.
Helical Gear for Industrial Machinery
A precision-engineered helical gear designed for use in heavy industrial machinery transmissions, featuring angled teeth for smooth power transfer. Classified under HTS 8483.90.80 as a toothed wheel presented separately, part of transmission elements not specified elsewhere in the subheading. It falls into 'Other' as it doesn't qualify as chain sprockets or specific enumerated parts.
Spur Gear for Automotive Transmission
Straight-toothed spur gear used in vehicle manual transmissions for direct power transmission between shafts. Falls under HTS 8483.90.80 as a separately presented toothed wheel, categorized in 'Other' transmission elements excluding sprockets. Essential for precise speed changing in drivetrains.
Bevel Gear for Differential
Conical bevel gear set for changing shaft direction in automotive differentials and machinery. Presented separately under HTS 8483.90.80 as 'Other' transmission elements/toothed wheels. Enables 90-degree power transfer.