Materials: Neodymium, iron and boron
Shape: Round
Smooth coating: Ni, Zn and Ni-Cu-Ni
Stable magnetic performance
Various grades and sizes are available.
The rings magnets of sintered Rare earth NdFeB, Material Grade: N33, N35, N38, N40, N42, N45, N48, N52, 33H, 35H, 38H, 40H, 42H, 33SH, 35SH, 38SH, 40SH, 45SH, 28UH, 30UH, 33UH, 28EH, 30EH, 33EH, be applied to toys, Switchboard, Phone, in hard disk drives, high performance motors, DC motors, magnetic separator, magnetic resonance imaging, sensors, loudspeakers, Magnetic Door catcher, etc.
Universal (Ningbo) Magnetech Co., Ltd. Was founded in 1987. We are a professional manufacturer of permanent magnet products, including NdFeB, AlNiCo, SmCo, ferrite magnets, rubber magnet, magnetic lifter, magnetic chuck and other magnetic applications.
Our main magnets have maximum energy product from 27MGOe to 52MGOe, intrinsic coercivity force from 12KOe, 14KOe, 17KOe, 20KOe up to 27KOe for different working conditions. We can supply NdFeB permanent magnets in various sizes, shapes and dimensions at the requests of customers and will deliver them in the shortest possible time.
With expertise management, our products have been well received in many European and Asian countries. Our present production capacity is over 800 tons per year. If you are interested in any of our products, please feel free to contact us for more information.
Product Description
NdFeB Magnet
1. Materials
Sintered Neodymium-Iron-Boron
2. Grades
Range: N35-N52; N35M-N50M; N35H-N48H, N35SH-N45SH; N30UH-N40UH, N30EH-N38EH
-The grade like N48-N52 could meet your requirements on strong power
3. Shapes
Others available: Ring, Disc, Block, Customized
4. Size
Diameter X Thickness You could choose freely according to your plan
5. Coatings
Others available: Zinc, gold, silver, epoxy, parylene, etc.
6. Orientation
Axially magnetized
7. Quality
Our expert quality control department ensures magnets are high quality
8. Applications
Different kinds of Motors, rotors, wind turbine, wind generators, etc.
About Ferrite Magnet
Ferrite, 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 brokenand chipped.
Ferrite magnets are brittle and hard generally requiring diamond wheels to grind and shape.
These magnets come in a number of different grades. Ceramic1 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.
Pot Magnet
This Neodymium or ferrite ring magnet in a steel pot is countersunk. It can be fastened with a countersunk screw. The steel pot substantially increases the holding of the magnet, but requires full contact with the opposing part, e. g. A steel plate. Magnets in steel pots don't have much effect into the distance, i. e. They are not suitable to attract item from a distance, but they are very well suited to hold on to a pieceof metal in full contact.
