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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 product is a square ceramic ferrite magnet, magnetic grade is Y30, size is length 50mm, width 50mm, thickness 25mm, thickness direction magnetization. The place of production is Dongguan, China. It is mainly used for industry, machinery and equipment, and personal experiments, if you need it Please contact us to purchase this magnet, the minimum order quantity is 10 pcs....
This is an ultra-small ferrite block magnet, small and thin, with a thickness of only 0.8mm, a length of 3.8mm, and a width of 2mm. It is mainly used for precision electronics, Hall sensors, and is magnetized in the direction of 2. The strong magnetic surface is the length If you are interested in this kind of small ferrite magnets, you can contact us to customize without pressure!...
Sample shot is a small and thin radial neodymium magnet ring, belongs to rare earth magnets, zinc-plated surface, outer diameter 6.5mm, inner hole diameter 3.5mm, thickness 0.5mm, through the diameter of the direction of the magnetization...
You are now seeing this is a non-standard customized sintered ceramic ferrite magnets, thickness 9mm, 14 pieces of a group, made of high grade Y33 grade or more, with strong magnetic strength, widely used in a variety of micro-motors, power tool motors, sports equipment motors...
The magnets with countersunk holes are generally mainly neodymium magnets, mainly because the neodymium material is easy to process and the magnetic force is satisfied. Such ferrite rectangular magnets with (punched) countersunk holes are rare, mainly requiring molds. , If you are interested in this product, you can contact the website customer service or leave a message online....
Ferrite magnets, sometimes referred to as ceramic because of their production process, are the least expensive class of permanent magnet materials. Ferrite magnets became commercially available in the mid 1950’s and has since found its way into countless applications including arc shaped magnets for motors, magnetic chucks and magnetic tools....
Ferrite magnets, sometimes referred to as ceramic because of their production process, are the least expensive class of permanent magnet materials. Ferrite magnets became commercially available in the mid 1950’s and has since found its way into countless applications including arc shaped magnets for motors, magnetic chucks and magnetic tools....
This product is a special magnet for cooling water pump. It is made of magnet + plastic injection molding. The magnet is usually sintered ferrite or injection molded ferrite. The number of magnetization poles is generally 4 or 2 poles. The height varies from 20-30mm...