Ferrite Magnet Manufacturer & Supplier

Ferrite Magnets (Ceramic Magnets) – Cost-Effective, Stable Magnetic Solutions

We manufacture and supply ferrite (ceramic) magnets for motors, speakers, sensors, home appliances
and industrial equipment. Stable quality, competitive cost, and reliable global delivery.

Low-cost permanent magnets
Excellent temperature stability
Corrosion-resistant material
Custom shapes & grades
30+ yrs
Magnet manufacturing experience

ISO
Quality & automotive certifications*

Global
Service network & warehouses



Ferrite magnets factory production and finished parts
Ferrite Magnet Highlights
  • Disc, block, ring and arc shapes
  • Hard ferrite grades for motors & speakers
  • Mass production with stable batch quality

Product Overview

What Are Ferrite (Ceramic) Magnets?

Ferrite magnets, also known as ceramic magnets, are permanent magnets made mainly from iron oxide
combined with either barium or strontium carbonate. They are one of the most widely used magnetic
materials in the world thanks to their low cost, excellent corrosion resistance and stable performance
in a wide temperature range.

Compared with rare earth magnets such as neodymium (NdFeB) and samarium cobalt (SmCo), ferrite magnets
offer lower magnetic energy but significantly better price-performance ratio. In many high-volume
applications – especially in motors, speakers and magnetic holding systems – ferrite magnets remain
the most economical choice.

Ferrite magnets are also very resistant to demagnetization and do not require special coating in
most environments. Their ceramic-like structure makes them inherently corrosion-resistant, which helps
reduce the need for additional surface treatment and simplifies long-term maintenance.

We supply both anisotropic ferrite magnets (with a preferred magnetic direction)
and isotropic ferrite magnets (magnetizable in any direction) according to your
application requirements.

Key Benefits

Why Global OEMs Still Choose Ferrite Magnets

  • Very competitive cost per piece for mass production
  • High electrical resistivity – lower eddy current losses
  • Good stability in wide temperature range
  • Excellent corrosion resistance without coating
  • Flexible shapes & sizes for different designs

Specifications & Grades

Ferrite Magnet Grades, Shapes and Magnetic Properties

We manufacture ferrite magnets in a wide range of grades and geometries, including discs, blocks,
rings and custom motor arcs. Below is a typical overview of common hard ferrite magnet grades. Actual
available grades can be adjusted to your project requirements.

Common Shapes and Dimensions

  • Disc magnets: widely used in speakers, sensors and holding tools
  • Block magnets: ideal for motors, magnetic chucks and industrial fixtures
  • Ring magnets: preferred for loudspeakers, motors and rotating devices
  • Arc (segment) magnets: mainly used in DC motors and generators
  • Custom shapes: available upon drawing or 3D model

We can support dimensional tolerances according to industrial standards or your specific request.
Magnetization direction (axial, diametral, multi-pole) can also be customized for your design.

Typical Magnetic Properties (Hard Ferrite)

Grade Br (mT) HcB (kA/m) HcJ (kA/m) (BH)max (kJ/m³) Max. Working Temp.
C5 / Y25 380–400 190–210 200–220 26–29 ≤ 250 °C
C8 / Y30 400–420 200–220 210–230 30–34 ≤ 250 °C
C11 / Y35 420–440 210–230 220–240 34–38 ≤ 250 °C

*Data above are reference values. We will confirm detailed specifications and tolerances according to your drawing
and application requirements.

Manufacturing

Manufacturing Process of Ferrite Magnets

A controlled manufacturing process is the foundation of consistent magnet performance. Our ferrite
production line follows a stable process route from raw materials to final inspection, ensuring each
batch meets your magnetic and dimensional requirements.

  1. Raw Material Preparation

    High-purity iron oxide and barium/strontium carbonate powders are accurately weighed and mixed
    according to the required grade formula.

  2. Pre-sintering and Milling

    The mixed powder is calcined at high temperature to form pre-sintered clinker, then milled into
    fine powder with controlled particle size to achieve the required magnetic properties.

  3. Pressing in Magnetic Field

    The ferrite powder is pressed into shape using wet or dry pressing methods. For anisotropic ferrite,
    a magnetic field is applied during pressing to align the magnetic domains.

  4. Sintering and Cooling

    The pressed green compacts are sintered at high temperature in a controlled atmosphere, forming
    dense ceramic magnets. Cooling rate is controlled to optimize microstructure and stability.

  5. Machining and Grinding

    After sintering, magnets are machined and ground to final dimensions. Surfaces can be processed
    to meet tight tolerances for motor slots or precise assemblies.

  6. Magnetizing and Full Inspection

    Magnets are magnetized to the specified magnetic direction and strength. Dimensional, appearance
    and magnetic inspections are carried out before packing and shipment.

Ferrite magnet manufacturing line and process flow

Ferrite magnet production line – from powder preparation to sintering and grinding.

Ferrite magnet quality inspection with Gauss meter

Magnetic performance and dimensional inspection ensure stable batch quality.

Applications

Applications of Ferrite Magnets

Thanks to their competitive cost and stable properties, ferrite magnets are used in a wide variety of
industries. Below are typical application areas we serve for global customers.

Automotive & Motors

Automotive Systems and DC Motors

Ferrite magnets are widely used in small DC motors for wipers, window lifters, fans and pumps. Their
high resistivity and stable performance at elevated temperatures make them reliable for automotive
environments.

Audio & Speakers

Speakers, Headphones and Buzzers

Ring and disc-shaped ferrite magnets are the mainstream choice for loudspeakers, headphones and
buzzers. They offer a good balance between magnetic performance and cost for mass-produced audio devices.

Appliances & Tools

Home Appliances and Magnetic Tools

From refrigerator compressors and washing machines to magnetic hooks, magnetic bases and holding tools,
ferrite magnets provide durable and corrosion-resistant magnetic force in daily appliances and tools.

Ferrite motor arc magnets for DC motors

Ferrite arc magnets for DC motors and automotive systems.

Ferrite ring magnets in speaker systems

Ferrite ring magnets in speakers and audio systems.

Ferrite magnets used in holding tools and fixtures

Ferrite holding magnets and fixtures for industrial applications.

Why Choose Us

Why Work with Us as Your Ferrite Magnet Supplier

Choosing the right magnet partner is not only about price. It is about stable quality, technical support
and long-term supply capability. We support your ferrite projects from early design to mass production.

30+ Years of Magnet Expertise

Our team has decades of experience in permanent magnet materials, including ferrite, NdFeB, SmCo and
AlNiCo. We understand magnetic design, material selection and manufacturing constraints, and can help
you choose the right solution instead of simply selling parts.

Stable Mass Production

With specialized production lines, we can support stable ferrite supply for motors, speakers and
magnetic assemblies. Batch consistency is controlled through standardized processes and quality systems.

Global Service and Warehousing

We serve customers across Asia, Europe and the Americas. Depending on your location, we can arrange
direct shipments from our factories or regional warehouses to shorten lead time and reduce logistics cost.

FAQ

Ferrite Magnets – Frequently Asked Questions

Below are answers to some of the most common questions about ferrite magnets. If you have a specific
technical question or need support for a new project, please feel free to contact us.

Are ferrite magnets strong enough for my application?
Ferrite magnets have lower energy compared with neodymium magnets, but in many motors, speakers and
holding applications they are strong enough and much more cost-effective. Whether ferrite is suitable
depends on your design, available space and required magnetic force. We can help you evaluate the
best material option.

What temperature can ferrite magnets withstand?
Standard hard ferrite magnets can typically operate up to around 250 °C in many applications.
This is higher than most neodymium magnets. For applications requiring frequent thermal cycling or harsh
environments, we will review the working conditions and propose suitable material grades.

Do ferrite magnets need surface coating?
In most cases, ferrite magnets do not need any special coating because the ceramic structure itself is
highly resistant to corrosion. However, if your application requires specific appearance or bonding
requirements, surface treatments such as epoxy coating or painting can be applied.

Can you customize ferrite magnets according to my drawing?
Yes. We can manufacture custom sizes and shapes based on your drawings, 3D models or samples, including
arc segments for motors and special blocks or rings for industrial equipment. Please share your drawings,
tolerance requirements and yearly volume so that we can prepare an accurate quotation.

What information do you need to quote ferrite magnets?
To provide an accurate quote, we typically need: material grade (or application), shape and dimensions,
magnetization direction, quantity (trial order and annual demand), any special tolerance or surface
requirement, and delivery location. If you are unsure, just describe your application – our team can
help you define key parameters.

How do you ship ferrite magnets internationally?
We can ship ferrite magnets by sea, air or express according to your needs. For regular orders, sea
freight is usually the most economical option. For urgent samples or small batches, we can arrange
air or courier shipment from our factory or regional warehouse to help you shorten project lead time.