| HS Code | Product Description | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|---|
| 8501402020 | Electric motors and generators (excluding generating sets): Other AC motors, single-phase: Of an output exceeding 37.5 W but not exceeding <il>74.6 W</il> Gear motors | Doc | 58.3% | CN | US | 2025-05-12 |
| 8501512020 | Electric motors and generators (excluding generating sets): Other AC motors, multi-phase: Of an output not exceeding <il>750 W:</il> Exceeding <il>37.5 W</il> but not exceeding <il>74.6 W</il> Gear motors | Doc | 57.5% | CN | US | 2025-05-12 |
| 8543708000 | Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: Other machines and apparatus: Other: Microwave amplifiers | Doc | 55.0% | CN | US | 2025-05-12 |
| 8543906800 | Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: Parts: Other: Printed circuit assemblies: Other | Doc | 55.0% | CN | US | 2025-05-12 |
| 9033009000 | Parts and accessories (not specified or included elsewhere in this chapter) for machines, appliances, instruments or apparatus of chapter 90: Other | Doc | 59.4% | CN | US | 2025-05-12 |
Gear Motor
A gear motor is an electric motor combined with a gearbox to produce high torque output at a reduced speed. This combination is widely used in various applications requiring controlled, precise motion.
Materials
Gear motors incorporate a range of materials depending on the application and performance requirements. Common materials include:
- Motor Components: Typically utilize copper windings, steel laminations, aluminum housings, and permanent magnets (in DC motors).
- Gearbox Components: Gears are commonly made of steel alloys, brass, bronze, or engineered plastics like nylon or acetal, selected for their durability, wear resistance, and load-bearing capacity. Housings are often constructed from cast iron, aluminum, or steel.
- Lubricants: Synthetic or mineral-based oils and greases are used to reduce friction and wear within the gearbox.
Purpose
The primary purpose of a gear motor is to provide a mechanical advantage. Electric motors typically operate at high speeds but produce relatively low torque. The gearbox reduces the output speed while proportionally increasing the output torque. This makes gear motors suitable for applications needing substantial force at lower rotational speeds.
Function
The function of a gear motor can be broken down into two core components:
- Electric Motor: Converts electrical energy into rotational mechanical energy. Common motor types include DC motors, AC induction motors, and stepper motors.
- Gearbox: A transmission system employing gears to modify the speed and torque characteristics of the motor’s output. The gear ratio—the ratio of input to output revolutions—determines the speed reduction and torque multiplication.
Usage Scenarios
Gear motors are found in a diverse array of applications:
- Robotics: Providing precise movement and control in robotic arms, wheels, and actuators.
- Automotive: Used in power windows, windshield wipers, seat adjustments, and electric vehicle drivetrains.
- Industrial Automation: Employed in conveyor systems, packaging machinery, and automated guided vehicles (AGVs).
- Home Appliances: Found in washing machines, dryers, dishwashers, and electric fans.
- Medical Equipment: Used in hospital beds, wheelchairs, and surgical devices.
- Power Tools: Employed in drills, screwdrivers, and grinders.
Common Types
Gear motors are categorized based on the type of gearbox used:
- Spur Gear Motors: Utilize spur gears, known for their simplicity and cost-effectiveness. Suitable for applications requiring moderate torque and speed reduction.
- Planetary Gear Motors: Employ planetary gear sets, offering high torque density, compact size, and high efficiency. Commonly used in robotics and high-precision applications.
- Worm Gear Motors: Utilize worm gears, providing high torque and self-locking capabilities (preventing backdriving). Suitable for applications requiring precise positioning and holding torque.
- Helical Gear Motors: Utilize helical gears, offering quiet operation and high efficiency. Commonly used in industrial applications.
- Bevel Gear Motors: Utilize bevel gears, changing the axis of rotation. Used in applications requiring angular drives.
- Cycloidal Gear Motors: Utilize cycloidal gear sets, providing very high torque density and zero backlash. Commonly used in high-precision servo applications.
Gear motors are electric motors integrated with a gearbox to provide higher torque and lower rotational speed. They are used in a wide range of applications including robotics, automation, and industrial machinery. Based on the provided information, the following HS codes may be relevant:
- 8501402020: This HS code covers “Electric motors and generators (excluding generating sets): Other AC motors, single-phase: Of an output exceeding 37.5 W but not exceeding 74.6 W”. This code specifically applies to single-phase AC motors with an output power between 37.5W and 74.6W, and includes gear motors within this power range. The total tax rate is 58.3%, comprised of a 3.3% base tariff and a 25.0% additional tariff, increasing to 30% after April 2, 2025.
- 8501512020: This HS code covers “Electric motors and generators (excluding generating sets): Other AC motors, multi-phase: Of an output not exceeding 750 W: Exceeding 37.5 W but not exceeding 74.6 W”. This code applies to multi-phase AC motors with an output power between 37.5W and 74.6W, and includes gear motors within this power range. The total tax rate is 57.5%, comprised of a 2.5% base tariff and a 25.0% additional tariff, increasing to 30% after April 2, 2025.
It is important to determine the phase (single or multi-phase) and output power of the gear motor to correctly classify it under either 8501402020 or 8501512020.