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This is a round hole magnet with an outer diameter of 70mm, an inner diameter of 32mm, and a thickness of 15mm. The material is sintered ferrite, anisotropic, and the surface is uncoated. It is mainly used for speakers, speakers, and thickness magnetization.
At present, the magnets on the speakers mainly include sintered neodymium magnets and ceramic ferrite magnets. The magnetic properties of ferrites are relatively poor, and a certain volume is required to meet the driving force of the speakers, so they are generally used in larger audio speakers.
Rare earth magnetic materials (such as NdFeB), the magnetizing flux is much larger than that of ferrite, so using NdFeB magnets does not require a large diameter, so NdFeB is mostly used for small volume speakers, such as automobiles Audio.
For the same magnetic material, the larger the diameter, the saturation of magnetization, the greater the magnetic field strength, the greater the power of the speaker, the higher the sensitivity of the speaker, and the better the transient response.
Speaker magnets of other sizes;
Introduction of relevant horn magnets;
Is the magnet used in the speaker sintered NdFeB or bonded NdFeB?
How to select horn speaker magnet? It will help you after reading
Ferrite grade, sintered ferrite magnetic property parameter table
NdFeB magnet grade, Sintered neodymium magnet performance grade parameter table
Neodymium(Ndfeb) Magnet Material Safety Data Sheet
Sintered Ferrite Material Safety Data Sheet Pdf
Magnetic properties grade parameters of smco rare earth magnets
This is a multi-pole ferrite magnetic assembly, composed of injection molded ferrite + shaft, also known as injection molded ferrite magnetic rotor magnet, rotor OD 29.8mm, height 7.5mm, shaft 3.17mm...
You are now viewing a ceramic ferrite ring magnet with 60mm bore (center hole), 120mm outer diameter, 20mm thickness, medium to large size magnet, no plating on surface, especially suitable for speakers, horns, salvage, fishing, and mechanical equipment,...
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Product name :Dia 18mm x 3mm Anisotropic Ferrite Disc Magnet。Main Features: It has the advantages of good anti-demagnetization performance, low cost, and not easy to corrosion, among which the isotropic sintered ferrite permanent magnet material is weak in magnetism...
This product is a ring ferrite magnet with an outer diameter of 13.5mm, an inner diameter of 10mm, and a thickness of 4mm. The grade is Y10, the surface magnetic field strength is about 650 Gauss, and the magnetism is not very strong....
Need to buy black cheap ceramic ferrite magnet with good corrosion resistance, you can contact us, support customization of various properties and sizes, you now see this size for the length of 43mm, width of 10mm, thickness of 10mm...
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