Sintered Permanent Rare Earth Ring NdFeB Magnets
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|Min. Order:||10 Pieces|
|Production Capacity:||1000 Ton/Year|
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- Model NO.: N48
- Shape: Ring
- Grade: N48
- Trademark: TSL
- Specification: rosh
- HS Code: 7202991200
- Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Motor Magnet
- Coating: Nickel
- Type: Permanent
- Transport Package: Packed in Plastic Then Put in Cartons
- Origin: China
NdFeB Magnets are manufactured in a metallurgy process through alloying, crushing, powdering, pressing w/magnetic orientation, sintering, then cutting, coating, inspecting and packing before shipment.
NdFeB Magnets offer the highest (BH)max and high Hci(BH)max, the Maximum Energy Product, of Neodymium magnets is highest of any kind of permanent magnets today in the world. (BH)max at different grades of Neodymium magnets is 27 to 52 MGOe. Neodymium magnets have extremely resistance to demagnetization with Hci, Intrisic coercive force, over 12,000 Oe. Because of very high (BH)max and Hci,
NdFeB Magnets could be used as a reversible medium for large amount of energy transformation in miniaturized application where a strong magnetic demagnetization field exists , such as computer hard drive. disk and rectangle shapes for customers' immediate needs and accept special orders for custom Neodymium magnets.
NdFeB Magnets are most powerful of any kind of magnetic materialsBr of Neodymium magnets are much more than 11,000 Gauss. Therefore, Neodymium magnets have strong holding strength on metal surface and could be used as component for holding, separating, etc.Neodymium magnets must be carefully handled to avoid personal injury and material damage due to its extremely magnetic strength and brittle property.
NdFeB Magnets are sensitive to temperature change and even lose magnet properties at high temperatureNeodymium magnets lose -0.09 ~ -0.13% of Br/°C and can work stably under 80°C for low Hci Neodymium magnets and 150°C for high Hci Neodymium magnets.
Neodymium magnets are corrupted in humid environment Surface protection is strongly recommended, such as plating, varnishing and encapsulating.
Neodymium magnets are hard and brittle Neodymium magnets can be abrasively machined with coolant served to absorb heating and dust. Without coolant, rare earth magnets could crack and chip by the heat produced during high speed cutting or grinding, and the sparks contain the easily oxidized grinding dust that could cause fire!
Magnetic Property of NdFeB Magnets
Ring NdFeB Magnet Outer Radius*Inner Radius*Thickness*
Maximum150.0 mm95.0 mm50.0 mm
Minimum0.8 mm0.15 mm0.2 mm
Disc NdFeB Magnet Diameter*Thickness*
Maximum150.0 mm75.0 mm
Minimum0.4 mm0.25 mm
Block NdFeB Magnet Length*Width*Thickness*Diagonal*
Maximum200.0 mm95.0 mm50.0 mm150.0 mm
Minimum3.080 mm1.20 mm0.25 mm0.50 mm
Arc-segment NdFeB Magnet Outer Radius*Inner Radius*Thickness*Degree*
Maximum75 mm65 mm50.00 mm150
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