Parts of motors
Parts suitable for use solely or principally with the machines of heading 8501 or 8502: > Other: > Other > Parts of motors
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Products classified under HTS 8503.00.95.20
Electric Motor Stator Core
Laminated steel core assembly designed for use in AC induction motors under heading 8501. It houses the windings that generate the rotating magnetic field essential for motor operation. Classified under 8503.00.95.20 as a principal part specifically for electric motors.
Induction Motor Armature Winding
Pre-wound copper coil assembly for squirrel-cage rotor in induction motors of 8501. Essential for conducting induced currents that produce rotor torque. Classified as motor-specific part under 8503.00.95.20.
Motor Thermal Protector Switch
Bimetallic thermal cutoff switch embedded in motor windings for overheat protection in 8501 motors. Automatically interrupts current at preset temperature to prevent burnout. Integral motor safety part under 8503.00.95.20.
Stepper Motor Lead Screw Assembly
Precision lead screw coupled to stepper motor shaft for linear motion conversion in 8501 motors. Provides accurate positioning for CNC and automation applications. Motor-specific transmission part under 8503.00.95.20.
Motor Mounting Baseplate
Cast aluminum base with precision machined feet and through-bolt pattern for NEMA-standard motor mounting in 8501 applications. Ensures vibration isolation and alignment. Dedicated motor mounting part under 8503.00.95.20.
Motor Terminal Box Assembly
Weatherproof junction box with ceramic insulators and strain relief for power connections on industrial motors (8501). Facilitates three-phase wiring and grounding. Principal electrical interface part under 8503.00.95.20.
Motor Cooling Fan Impeller
Precision-molded plastic impeller mounted on motor shaft extension for forced air cooling of 8501 motors. Designed for specific airflow and pressure matching motor heat dissipation needs. Integral cooling part under 8503.00.95.20.
Motor Shaft Extension Coupling
Machined steel shaft extension with keyway and set screw for load coupling on 8501 motors. Provides standardized interface between motor and driven equipment. Transmission component under 8503.00.95.20.
Motor Centrifugal Switch Assembly
Speed-responsive switch mechanism for single-phase induction motors (8501) that disconnects start winding after reaching 75% synchronous speed. Essential for start capacitor circuit control. Control part under 8503.00.95.20.
Motor Vibration Damper Ring
Rubber-inertia ring assembly mounted on motor frame to reduce resonant vibration in 8501 industrial motors. Tuned to motor operating frequency for harmonic suppression. Damping part under 8503.00.95.20.
Motor Phase Failure Relay
Electronic relay module monitoring three-phase power for undervoltage/overcurrent in 8501 motors. Protects against single-phasing damage with automatic disconnect. Protection part under 8503.00.95.20.
Motor Endbell Assembly
Cast aluminum endbell with integrated bearing journal and mounting flange for 8501 motors. Houses rear bearings and provides structural motor enclosure. Principal housing part under 8503.00.95.20.
Brushless DC Motor Rotor Assembly
Permanent magnet rotor with shaft and bearings, principal component for BLDC motors in heading 8501. Provides the rotating element that interacts with stator field for torque generation. Falls under 8503.00.95.20 as dedicated motor rotor part.
Servo Motor Encoder Disk
Optical glass disk with precision patterns for position feedback in servo motors (8501). Provides high-resolution angular position data critical for closed-loop control. Dedicated motor feedback part under 8503.00.95.20.
Fractional Horsepower Motor Bearing Housing
Precision-machined aluminum housing for ball bearings in small AC/DC motors under 8501. Ensures shaft alignment and vibration damping specific to fractional HP motor design. Principal motor part under 8503.00.95.20.