FERRITE MAGNETS are composed of barrium/strontium carbonate and iron oxide. They are charcoal gray in color and usually appear in the forms of discs, rings, blocks, cylinders, and sometimes arcs for motors.

Attributes of Ferrite Magnets –
High intrinsic coercive force
Tooling is expensive
Least expensive material compared to alnico and rare earth magnets
Limited to simple shapes due to the manufacturing process
Lower service temperature than alnico, greater than rare earth
Finishing requires diamond cutting or grinding wheel
Lower energy product than alnico and rare earth magnet



Applications of Ferrite Blocks –
DC brushless motors, Magnetic Resonance Imaging (MRI), Magnetos used on lawnmowers and outboard motors, DC permanent magnet motors (used in cars), Separators (separate ferrous material from non-ferrous), Used in magnetic assemblies designed for lifting, holding, retrieving, and separating.

Ferrite disc magnets are widely used for crafts and hobbies, school science projects, and even phyiscal therapy. The low cost of these magnets makes them a great choice for home use. Ceramic discs are available in many sizes. When assembling products or handcrafts, we recommended using an expoxy glue and make sure the surface is clean and dry. Other applications include souvenirs, fridge magnets, whiteboard magnets and educational magnets.

Applications of Ferrite Rings –
Ring magnets are made specifically for loudspeaker systems and their sizes have evolved with demand from this market. However, they are also commonly used in magnetic rollers for separating applications and in the printing industry. They are also a vital component found in fast running conveyor systems in many manufacturing plants dealing with ferrous material.

Applications of Ferrite Arc –
Arc magnets are a unique shape which are designed especially for motors, generators and alternators and are commonly used for both rotors and stators. They are also used in magnetic flywheel assemblies. In motor design a ring of magnets with alternating polarities on the inner radius rotate in close proximity to a number of copper coils. As the copper passes through the magnetic fields an electric current is induced within the copper.
Four or more magnets with an equal number of north and south polarity on the inner radius can be used to create a multi-pole ring. All arc magnets are available with either pole on the inner radius.





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Ferrite Magnets

Ferrite Magnets, Sintered Hard Ferrite Permanent Magnets, Injection Bonded Ferrite Magnets, Ceramic Magnets, Custom Bonding Ferrite Magnets China Supplier & Factory

Ferrite Magnets, also known as ceramic magnets, are made of a composite of Iron oxide and barium carbonate (BaCO3) or strontium carbonate (SrCO3). Widely available since the 1950’s, this material is commonly available and at a lower cost than other types of materials used in permanent magnets. Ceramic magnets are made using pressing and sintering. Sintered magnets are a type of ceramic composed of the compressed powder of the alloy material being used. Sintering involves the compaction of fine alloy powder in a dry and then fusing the powder into a solid material with heat. While the sintered magnets are solid, their physical properties are more similar to a ceramic and are easily broken and chipped.

Ferrite magnets are brittle and hard generally requiring diamond wheels to grind and shape. These magnets come in a number of different grades.

Ceramic is an isotropic grade with equal magnetic properties in all directions. Ceramic grades 5 and 8 are anisotropic grades. Anisotropic magnets are magnetized in the direction of pressing. The anisotropic method delivers the highest energy product among ceramic magnets at values up to 3.5 MGOe ( Mega Gauss Oersted).
Ceramic magnets have a good balance of magnetic strength, resistance to demagnetizing and economy. They are the most widely used magnets today.

Beneficial characteristics of ceramic magnets include their low cost, high coercive force, resistance to corrosion, and high heat tolerance. Drawbacks include their low energy product or “strength”, low mechanical strength, and the ferrite powder on the surface of the material which can rub of and cause soiling.

1) Cheapest magnet material
2) Good anti-corrosion performance, no surface treatment needed.
3) Excellent temperature stability
4) Best choice for industrial application
5) All shapes can be customized
6) provide isotropic and anisotrpic


Sintered Ferrite Magnets Bonded-Ferrite-Magnets
Sintered Ferrite Magnets Bonded Ferrite Magnets



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