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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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3%+35.0%38%
🇲🇽Mexico3%+10.0%13%
🇨🇦Canada3%+10.0%13%
🇩🇪Germany3%+10.0%13%
🇯🇵Japan3%+10.0%13%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

4010Lower: 13.3% vs 38%

If general rubber vibration mounts

Rubber plates with metal fittings if not motor-specific.

8503.00.95Same rate: 38%

If DC motor dampers

DC-specific vibration parts tracked separately.

7326.90Lower: 12.9% vs 38%

If steel damper rings only

Metal articles if lacking tuned rubber inertia component.

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Import Tips & Compliance

• Specify natural frequency and damping coefficient matched to motor specs

• Include mounting stud pattern matching motor frame size

• Distinguish from automotive dampers (4010) via industrial motor design

Related Products under HTS 8503.00.95.20

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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.

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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.

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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.