Worm Gear Speed Reducer

Compact fixed ratio speed changer using a worm gear mechanism for high torque reduction in right-angle applications. Classified in HTS 8483.40.5010 for its fixed ratio design manually set during installation. Ideal for elevators, winches, and material handling equipment.

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.

8483.10.50Lower: 35% vs 37.5%

If primarily transmission shafts with integral fixed gearing

Heading prioritizes transmission shafts over speed changers when shaft is principal function.

8483.90.30Higher: 39.5% vs 37.5%

If sold as replacement housing only

Bearings housings and plain shaft bearing housings are separate under 8483.90.30.

8501.52Lower: 25% vs 37.5%

If AC motor integrated as complete unit

Complete electric motors with integral speed changers classify in Chapter 85.

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

,Check for anti-backlash features; if absent, ensure no confusion with precision positioning under 8483.40 other

Obtain material certificates for housing (cast iron/aluminum) to comply with origin rules

Related Products under HTS 8483.40.50.10

Industrial Fixed Ratio Gear Reducer

A fixed ratio speed changer used in heavy machinery to reduce motor speed while increasing torque output for consistent operation. It falls under HTS 8483.40.5010 as a gear box with a fixed gear ratio selected manually, distinct from variable or multiple ratio types. Commonly employed in conveyor systems and pumps.

Helical Inline Gearbox

Fixed ratio speed changer with helical gears for smooth, quiet operation in inline configurations. HTS 8483.40.5010 applies to its single, manually selected fixed ratio for industrial drives. Used in mixers, fans, and agitators.

Planetary Gear Speed Reducer

High-precision fixed ratio speed changer using planetary gear sets for compact, high-torque applications. Falls under HTS 8483.40.5010 as a fixed ratio gear box manually configured. Common in robotics and automation.

Bevel Gear Right Angle Reducer

Fixed ratio speed changer with bevel gears for 90-degree power transmission. HTS 8483.40.5010 covers its manual fixed ratio setup for fixed applications. Used in overhead cranes and food processing.

Cycloidal Drive Speed Reducer

Fixed ratio speed changer featuring cycloidal disc technology for zero-backlash performance. Classified HTS 8483.40.5010 for fixed ratio manual selection in precision machinery. Applied in CNC and packaging equipment.

Fixed Ratio Conveyor Gearbox

Robust fixed ratio speed changer optimized for belt conveyor drives with manual ratio selection. Under HTS 8483.40.5010 as non-variable speed changer for material handling. Features IP65 protection.