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Permanent Ferrite Round Ring Magnets

Ferrite, also known as Ceramic Magnets, is made of a composite of Iron oxide and barium carbonate (BaCO3) or strontium carbonate (SrCO3). 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 by pressing and sintering. Sintered magnets are a type of ceramic composed of the compressed powder of the alloy material being used.

  • Item NO.:

    BHFM-01

  • Lead Time:

    30-35 days

  • Product Orgin:

    China

  • Shipping Port:

    Shanghai

  • min order:

    1000pcs

  • Grade:

    Y30
Inquiry now
  • Product Detail

Permanent Ferrite Round Ring Magnets

Also known as ceramic magnets, ferrite magnets offer excellent value for money when pull strength is not the most important factor. They have a high resistance to corrosion and demagnetization and can operate in temperatures up to 180oC. Ferrite 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.

Customized ferrite Magnetic Rings

Attributes of Ceramic Magnets:

• Least expensive material compared to alnico and rare earth magnets

• High intrinsic coercive force

• Available in simple shapes only due to manufacturing process

• Lower service temperature than alnico, greater than rare earth

• Lower energy product than alnico and rare earth magnets

• Most common grades of Y25,Y30,Y30H-1,Y30H-2,Y32,Y33 ceramic are 1, 5 and 8 (1-8 possible)


Material


Iso/
Anisotropic


Remanence


Coercivity


Intrinsic Coercivity


Max Energy product

Br(mT)

Br(Gs)

bHc(KA/m)

bHc(Oe)

iHc(KA/m)

iHc(Oe)

(BH)max(KJ/m 3 )

(BH)max(MGOe)

Y10T
c1

Isotropic

≥200

≥2000

≥125

≥1600

≥210

≥2600

≥6.5

≥0.8

Y20

Anisotropic

≥360

≥3600

≥135

≥1700

≥140

≥1760

≥20.0

≥2.5

Y25

Anisotropic

≥380

≥3800

≥144

≥1800

≥150

≥1880

≥24.0

≥3.0

Y30
c5

Anisotropic

≥390

≥3900

≥184

≥2300

≥188

≥2350

≥27.6

≥3.4

Y30BH
c8

Anisotropic

≥390

≥3900

≥240

≥3000

≥256

≥3200

≥27.6

≥3.4

Y35
c11

Anisotropic

≥410

≥4100

≥208

≥2600

≥212

≥2660

≥30.4

≥3.8


Application

Ferrite Ring magnets can be used in a wide range of applications due to their high coercivity and low cost.

Common applications include reed switches, loud speakers, security systems, audio and television and also holding devices such as pot magnets. Our ferrite ring magnets are often used in loudspeakers and also in resonance imaging and torque drives.


Ceramic 5 Ring Ferrite Magnets




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