Gold Member Since 2014
TSL Magnetic Material Co., Ltd.

NdFeB Magnets, Neodymium Magnets, Magnet manufacturer / supplier in China, offering Strongest Grade Sintered Round Permanent NdFeB Magnets, Cylinder Sintered Neodymium Permanent Magnet Plated Znic, High Performance Sintered Permanent Neodymium Block Magnet and so on.

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Supplier Homepage Product Disc Magnets Strongest Grade Sintered Round Permanent NdFeB Magnets

Strongest Grade Sintered Round Permanent NdFeB Magnets

FOB Price: US $0.01 / Piece
Min. Order: 10 Pieces
Min. Order FOB Price
10 Pieces US $0.01/ Piece
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Port: Shenzhen, China
Production Capacity: 1000 Ton/Year
Payment Terms: T/T, Western Union, Paypal

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Basic Info
  • Model NO.: N52
  • Shape: Cylinder
  • Grade: N52
  • Density: 7.5g/cm3
  • Max.Temp: 80
  • Transport Package: Packed in Plastic Then Put in Cartons
  • Origin: China
  • Application: Speaker Magnet, Industrial Magnet, Motor Magnet
  • Coating: Nickel
  • Type: Permanent
  • Material: Neodymium
  • Trademark: TSL
  • Specification: rosh
  • HS Code: 7202991900
Product Description
ShapeMagnetic SizeGradePlatingMaterialGaussVertical PullMax.temp

NdFeB Magnets are composed of Neodymium, Iron and Boron. Density of NdFeb magnets is. 27Lb/in3 (7.5g/cm3).

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, Neo 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.
NdFeB magnets are corrupted in humid environment Surface protection is strongly recommended, such as plating, varnishing and encapsulating.

NdFeB 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!

Grades of NdFeB Magnets
N35-N52 (working temperature Max. 80)
33M-48M (working temperature Max. 100)
30H-45H (working temperature Max. 120)
30SH-42SH (working temperature Max. 150)
30UH-35UH (working temperature Max. 180)
28EH-35EH(working temperature Max. 200)
Dimension Range, Size and Tolerance

Ring Neodymium Magnets Outer Radius*Inner Radius*Thickness*
Maximum150.0 mm95.0 mm50.0 mm
Minimum0.8 mm0.15 mm0.2 mm

Disc Neodymium Magnets Diameter*Thickness*
Maximum150.0 mm75.0 mm
Minimum0.4 mm0.25 mm

Block Neodymium Magnets Length*Width*Thickness*Diagonal*
Maximum200.0 mm95.0 mm50.0 mm150.0 mm
Minimum3.080 mm1.20 mm0.25 mm0.50 mm

Arc-segment Neodymium Magnets Outer Radius*Inner Radius*Thickness*Degree*
Maximum75 mm65 mm50.00 mm150
Minimum1.9 mm
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