neodymium magnets

Powerful Isotropic Ferrite Ring Magnets

Also known as ceramic magnets, ferrite magnets offer excellent value for money when pull strength is not the most important factor. According to the different orientation of the crystal , it can be divided into isotropic magnets and anisotropic magnets. Due to the ferrite has good temperature resistance with low cost, which has become one of the most used magnets.
  • Item NO.:

    BHFM-01
  • Lead Time:

    25-30 days
  • Product Orgin:

    China
  • Shipping Port:

    Shanghai
  • min order:

    1000pcs
  • Grade:

    Y30
  • Product Detail

Powerful Isotropic Ferrite Ring Magnets

Ring Ferrite Magnets—As important parts of magnetic materials, hard ferrite materials play a heavyrole in electronic industry, electronic information industry, car industry, motorcycle industry etc. meanwhile, they are also widely used in medical treatment, mining and metallurgy, industrial automation, oil energy industry and civil industry.

Ceramic (ferrite) magnets are composed of SrO or BaO and Fe2O3. They are charcoal gray in color and usually appear in the forms of discs, rings, blocks, cylinders, and sometimes arcs or segments for motors.

Isotropic ferrite ceramic magnets magnetic ring

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


Manufacturing process and magnetizing

1 With dry process can produce isotropic & anisotropic magnets, the tool can be changed and developed easily.

2 With wet process only can produce anisotropic magnets,it is complicated to change the tool and the tooling charge is high.

3 Isotropic ferrite magnets can be magnetized in any direction.

4 Anisotropic ferrite magnets are all oriented in the manufacturing direction, and can be magnetized in the direction of orientation.

Hard Ferrite Isotropic Multipole Ring Magnet

Tolerances:

For as pressed material, tolerance on the thickness (direction of magnetization) is ± .005inch. Other dimensions are ± 2% or ± .010inch, whichever is greater.


Applications

Ferrite Ring magnets are made specifically for loudspeaker systems and their sizes have evolved with demand from this market. However, ceramic ring magnets 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.

Speaker Motor Ferrite Ceramic Magnets



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