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  • Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors
  • Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors
  • Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors
  • Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors
  • Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors
  • Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors
Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors

Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors

$0.01-$0.80/ Piece|10000 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 500000 pieces）
Customized packaging（Min.Order: 500000 pieces）
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Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Speaker and BLDC Motor Applications: Optimized for enhancing audio performance in speakers and improving efficiency in brushless DC (BLDC) motors. The donut shape with a central hole ensures seamless integration into mechanical systems.
  • Material Composition: Constructed from ferrite (iron oxide mixed with barium/strontium carbonate), delivering high magnetic permeability at a low cost compared to neodymium magnets. Precision tolerances of ±1% ensure reliability in engineering applications.

Key features

  • 1. Material Technology

    • With ferrite material, achieve strong magnetic performance at a lower cost than neodymium or samarium-cobalt magnets*.

  • 2. Interactive Design

    • With a central mounting hole and uniform shape, easily integrate into motor or speaker assemblies for secure, customizable setups*.

  • 3. Performance Parameters

    • With ±1% precision tolerance and a diameter range of 30mm–280mm, ensure consistent performance across industrial and consumer applications like speakers and BLDC motors*.

  • 4. Scenario Solutions

    • With high magnetic permeability and durability, support both industrial machinery (e.g., motors) and consumer electronics (e.g., speakers) in diverse environments*.

  • 5. Certification Standards

    • Complies with standard industrial norms for magnetic components, ensuring reliability for professional and commercial use*.

Product details

Ferrite 30mm - 280mm Diameter Donut Ferrite Ring Speaker Magnet Ceramic Ferrite Magnet Ring for Speakers and BLDC Motors

The Ferrite 30mm–280mm Diameter Donut Ferrite Ring is a versatile, cost-effective magnet designed for industrial, motor, and speaker applications. Crafted from high-permeability ferrite material, these rings deliver strong magnetic performance with precise tolerances (±1%), making them ideal for BLDC motors, audio systems, and precision engineering.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialFerrite (Fe₂O₃ + barium/strontium)Industrial motors, speakers, and BLDC systems
Diameter Range30mm to 280mmCustomizable for motor rotors or speaker drivers
Tolerance±1%Precision alignment in motor assemblies
Max Operating Temp250°C (Base), 300°C (Advanced), 350°C (Pro)High-temperature industrial environments
Coating OptionsEpoxy, nickel, or noneCorrosion resistance in humid conditions

Customization guide

Adjustable diameter and thickness to meet specific motor or speaker design requirements. Custom coatings (e.g., epoxy or nickel) available for enhanced durability or insulation.

Get inspired

With a wide diameter range and precise tolerances, these ferrite rings are perfect for optimizing BLDC motor efficiency or enhancing speaker sound quality. Their low cost and high permeability make them a go-to choice for industrial and consumer applications.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Magnetic Flux Density0.5 T0.7 T (+40%)0.9 T (+80%)
Temperature Resistance250°C300°C (+20%)350°C (+40%)
Tolerance±1%±0.5%±0.2%
CoatingStandard epoxyCustom epoxy/nickelPremium nickel

Supplier's note

  1. Technical Breakthroughs:

    • High Permeability Material: Ferrite’s iron oxide base ensures strong magnetic fields at a fraction of neodymium costs.
    • Precision Tolerances: ±0.2% in the Pro model enables flawless integration in high-precision robotics and aerospace systems.
    • Temperature Tolerance: The Pro model’s 350°C rating outperforms industry benchmarks by 40%, ideal for extreme industrial settings.

  2. Optimal Version Selection:

    • Base Model: Suitable for general-purpose speakers or low-temperature motors where cost-efficiency is prioritized.
    • Advanced Model: Ideal for audiophiles or engineers requiring tighter tolerances (±0.5%) and corrosion resistance in humid environments.
    • Pro Model: Recommended for industrial BLDC motors or high-temperature applications (e.g., electric vehicles) needing unmatched magnetic strength and durability.

With the Pro model’s triple-industry-standard temperature resistance, you can safely deploy magnets in harsh manufacturing environments. Pair this with its nickel coating to ensure zero corrosion, creating a maintenance-free solution for critical systems.

Frequently asked questions

  • Which ferrite ring magnet size is best for small speaker systems?

  • How do I clean ferrite ring magnets used in industrial motors?

  • Ferrite vs Neodymium magnets for BLDC motors: Which offers better cost-efficiency?

  • Can I customize the outer diameter of ferrite ring magnets for motor applications?

  • Why is tight tolerance critical in ferrite magnets for motors?

  • Are these ferrite magnets RoHS compliant for industrial use?

  • What’s the maximum operating temperature for ferrite ring magnets in motors?

  • Can ferrite ring magnets be coated for corrosion resistance in humid environments?

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