Helical Gear Set for Industrial Machinery
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If entered as separate toothed wheels
Individual toothed wheels are classified separately under 8483.10, while assembled gearing falls here.
If specifically designed as parts of semiconductor processing machines
Parts dedicated solely to semiconductor manufacturing equipment are classified in Chapter 84 per statistical notes.
If for motor vehicle transmission applications
Vehicle-specific gearing moves to Chapter 87 motor vehicle parts.
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
• 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
Related Products under HTS 8483.40.90.00
Planetary Gearbox Assembly
Compact planetary gear system consisting of sun gear, planet gears, and ring gear for high-torque, low-speed applications in robotics and automation. Falls under HTS 8483.40.90.00 as complex gearing beyond simple toothed wheels or sprockets. Provides gear reduction ratios up to 100:1 in integrated housing.
Worm Gear Reducer
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.
Bevel Gear Pair for Right-Angle Drive
Miter or spiral bevel gears transmitting power at 90-degree angles in differential assemblies and machine tools. Classified HTS 8483.40.90.00 as specialized gearing distinct from straight toothed wheels. Provides smooth torque transfer with minimal backlash.
Rack and Pinion Gear Set
Linear motion conversion system with circular pinion gear engaging straight rack for CNC machines and steering systems. HTS 8483.40.90.00 captures this linear gearing excluded from toothed wheel specifics. Precision ground for minimal backlash in automation.
Spur Gear Cluster for Multi-Stage Reduction
Multiple integral spur gears of varying diameters on single shaft for sequential speed reduction in pumps and compressors. Falls under HTS 8483.40.90.00 as compound gearing beyond single toothed wheels. Provides stepped ratios in compact form factor.
Hypoid Gear Set for Heavy Duty Applications
Offset axis hypoid gears providing superior strength for axle drives and heavy machinery differentials. HTS 8483.40.90.00 includes this advanced gearing type excluded from basic toothed wheel definitions. Features curved teeth for quiet operation and high loads.