Worm Gearbox Bronze Worm Wheel

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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China2.5%+35.0%37.5%
🇲🇽Mexico2.5%+10.0%12.5%
🇨🇦Canada2.5%+10.0%12.5%
🇩🇪Germany2.5%+10.0%12.5%
🇯🇵Japan2.5%+10.0%12.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8483.40.50Same rate: 37.5%

If presented as a separate toothed transmission element

Individual toothed wheels without gearbox context classify under 8483.40.

8482.10.50Higher: 44% vs 37.5%

If for ball or roller screw assemblies

Threaded elements primarily for linear motion shift to screw headings.

7326.90.86Higher: 37.9% vs 37.5%

If generic bronze castings not speed-changer specific

Non-machinery-specific metal articles fall under Chapter 73.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

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

Related Products under HTS 8483.90.50

Helical Gearbox Input Shaft

This precision-machined steel input shaft transmits rotational power into a helical gearbox, featuring splines for secure meshing with the primary gear. It is classified under HTS 8483.90.50 as a dedicated part of gearing and gearboxes, essential for speed reduction in industrial machinery. Designed for high-torque applications in manufacturing equipment.

Spiral Bevel Gearbox Thrust Bearing Spacer

Precision-ground spacer maintains axial clearances in spiral bevel gearbox thrust bearing arrangements, preventing gear tooth overload. HTS 8483.90.50 part for heavy-duty speed changers in marine winches. Material-matched to housing expansion rates.

Planetary Gearbox Carrier Plate

A forged aluminum carrier plate holds planet gears within a planetary gearbox, enabling multi-stage speed reduction and torque multiplication. Classified under HTS 8483.90.50 as a core internal part of gear boxes and speed changers used in robotics and automation. Precision holes ensure proper gear meshing and load distribution.

Cycloidal Speed Reducer Housing

Cast iron housing encases eccentric discs and pins in a cycloidal speed reducer, providing structural integrity for high-shock load applications. Classified as HTS 8483.90.50 parts of gear boxes and speed changers in packaging machinery. Integral mounting flanges ensure alignment.

Torque Converter Stator Assembly

Multi-bladed stator redirects fluid flow in automatic transmission torque converters to multiply engine torque during acceleration. Falls under HTS 8483.90.50 as parts of speed changers including torque converters for automotive and industrial applications. Precision vanes optimize hydraulic efficiency.

Inline Helical Gearbox Output Flange

Machined steel output flange couples inline helical gearboxes to driven equipment, featuring precise bolt patterns and centering diameters. HTS 8483.90.50 classification applies to this gearbox mounting part for conveyor drives. Balanced design minimizes vibration.