Find HS Code and trade information for motor accessories: stator

Stator

A stator is a stationary part of a rotary system, found in electric motors, generators, turbines, and pumps. Its primary function is to generate a magnetic field that interacts with a rotor to produce torque or induce current.

Material

Stators are typically constructed from:

• Laminated Steel: This is the most common material due to its ability to reduce eddy current losses. Thin steel laminations are insulated from each other to minimize resistance to alternating magnetic flux.
• Copper Windings: Copper wire is used for the coils, providing a conductive path for current and generating the magnetic field when energized. Aluminum windings are also used in some applications, offering lighter weight but lower conductivity.
• Insulating Materials: Various insulating materials (e.g., varnish, epoxy resins, specialized coatings) are used to electrically isolate the windings from the steel core and from each other, preventing short circuits.
• Housing Materials: Stators are often encased in steel, cast iron, or aluminum housings for mechanical protection and heat dissipation.

Purpose & Function

The core purpose of a stator is to convert electrical energy into mechanical energy (in motors) or vice-versa (in generators).

• In Motors: The stator windings, when energized with electricity, create a rotating magnetic field. This field interacts with the magnetic field of the rotor, causing the rotor to spin, thus producing mechanical power.
• In Generators: The rotating magnetic field created by the rotor induces a current in the stator windings, converting mechanical energy into electrical energy.

Usage Scenarios

Stators are integral components in a wide range of applications:

• Electric Vehicles (EVs): High-performance stators are used in traction motors.
• Industrial Machinery: Pumps, fans, compressors, and conveyor systems utilize stators.
• Household Appliances: Washing machines, dryers, refrigerators, and air conditioners all contain stators.
• Power Generation: Large-scale generators in power plants rely on robust stators.
• Aerospace: Electric motors for actuators and pumps in aircraft.
• Robotics: Precision stators for robotic joint control.

Common Types

Stators are categorized based on their construction and the type of motor/generator they are used in:

• Wound-Rotor Stators: These have windings placed in slots around the stator core. They are common in induction motors.
• Permanent Magnet Stators: Utilize permanent magnets instead of windings to create the magnetic field. These are increasingly used in BLDC (Brushless DC) motors for higher efficiency.
• Axial Flux Stators: Designed with a disc-shaped configuration, offering higher torque density.
• Radial Flux Stators: The most common type, with magnetic flux flowing radially from the core.
• Segmented Stators: Constructed from multiple segments, allowing for customized designs and improved manufacturing flexibility.
• Coreless Stators: Lack a laminated steel core, reducing weight and inertia, but typically have lower efficiency.

Motor Accessories: Stator Classification

Based on the provided information, the classification of “motor accessories: stator” falls under electrical parts of machinery or apparatus.

Here are the relevant HS codes:

• 8548000000: Electrical parts of machinery or apparatus, not specified or included elsewhere in this chapter.
  • 85: Electrical machinery and equipment and parts thereof; Recorded media (the two-digit chapter).
  • 48: Electrical parts of machinery or apparatus, not specified or included elsewhere in this chapter (the two-digit heading).
  • 000000: This represents the subheading, indicating a more specific classification within the heading, in this case, electrical parts not further specified. This code covers a broad range of electrical components used in machinery and apparatus.

Tax Details:

• Basic Tariff: 0.0%
• Additional Tariff: 25.0%
• Tariff after April 2, 2025: 30.0%
• Total Tariff: 55.0%

Important Note:

Regarding HS code 8548000000, please note that this code covers a wide range of electrical parts. It is essential to verify the specific material composition and function of the stator to ensure accurate classification.