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

NdFeB Magnets, Neodymium Magnets, Magnets manufacturer / supplier in China, offering High Performance Sintered Disc NdFeB Magnets, Rare Earth Sintered Permanent Disc Neodymium Magnet for Industry, Powerful Neodymium Magnet Cylinder Rare Earth Magnet and so on.

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Supplier Homepage Product Disc Magnets High Performance Sintered Disc NdFeB Magnets

High Performance Sintered Disc 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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Production Capacity: 1000 Ton/Year
Transport Package: Packed in Plastic Then Put in Cartons
Payment Terms: T/T, Paypal, Western Union

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Basic Info
  • Model NO.: N40
  • Shape: Cylinder
  • Grade: N40
  • Material: Neodymium, Iron and Boron
  • Working Temperature: Max. 80
  • Specification: rosh
  • HS Code: 7202991900
  • Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
  • Coating: Nickel
  • Type: Permanent
  • Density: 7.5g/cm3
  • Trademark: TSL
  • Origin: China
Product Description
Ndfeb Magnets are composed of Neodymium, Iron and Boron. Density of Neodymium 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.
Neodymium 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!

Magnetic Property of Neodymium Magnet
GradeRemanence 
Br
Coercive Force 
Hcb
Intrinsic Coercive force 
Hci
Max Energy Product 
(BH) max
Max Working Temp.
KGTKOeKA/mKOeKA/mMGOeKJ/mºC°F
N3511.4-11.81.18-1.28≥ 10.8≥ 836≥ 12≥ 95533-36263-28780176
N3811.8-12.31.18-1.28≥ 10.8≥ 860≥ 12≥ 95536-39287-31080176
N4012.7-12.91.27-1.29≥ 11.0≥ 876≥ 12≥ 95538-41303-32680176
N4212.9-13.31.29-1.33≥ 10.5≥ 836≥ 12≥ 95540-43318-34280176
N4513.3-13.81.33-1.38≥ 9.5≥ 756≥ 12≥ 95543-46342-36680176
N4813.8-14.21.38-1.42≥ 10.5≥ 835≥ 12≥ 95546-49366-39080176
N5013.8-14.51.38-1.45≥ 10.5≥ 835≥ 11≥ 95547-51374-40680176
N5214.3-14.81.43-1.48≥ 10.8≥ 860≥ 11≥ 87650-53398-42280176
33M11.4-11.81.14-1.18≥ 10.3≥ 820≥ 14≥ 111431-33247-263100212
35M11.8-12.31.18-1.23≥ 10.8≥ 860≥ 14≥ 111433-36263-287100212
38M12.3-12.71.23-1.27≥ 11.0≥ 876≥ 14≥ 111438-41303-326100212
40M12.7-12.91.27-1.29≥ 11.4≥ 907≥ 14≥ 111438-41303-326100212
42M12.8-13.21.28-1.32≥ 11.6≥ 923≥ 14≥111440-43318-342100212
45M13.2-13.81.32-1.38≥ 11.8≥ 939≥ 14≥ 111443-46342-366100212
48M13.6-14.01.36-1.40≥ 11.8≥ 939≥ 14≥ 111446-49366-390100212
50M14.0-14.51.40-1.45≥ 13.0≥ 1033≥ 14≥ 111448-51382-406100212
30H10.8-11.41.08-1.14≥ 10.2≥ 812≥ 17≥ 135328-31223-247120248
33H11.4-11.81.14-1.18≥ 10.6≥ 844≥ 17≥ 135331-33247-263120248
35H11.8-12.31.18-1.28≥ 11.0≥ 876≥ 17≥ 135333-36263-287120248
38H12.3-12.71.23-1.27≥ 11.2≥ 890≥ 17≥ 135336-39287-310120248
40H12.7-12.91.27-1.29≥ 11.5≥ 915≥ 17≥ 135338-41303-326120248
42H12.8-13.21.28-1.32≥ 12.0≥ 955≥ 17≥ 135340-43318-342120248
45H13.2-13.51.32-1.38≥ 12.0≥ 955≥ 17≥ 135342-46335-366120248
46H13.3-13.81.33-1.38≥ 12.2≥ 972≥ 16≥ 127444-47350-374120248
48H13.6-14.31.36-1.43≥ 12.5≥ 995≥ 16≥ 127446-49366-390120248
30SH10.8-11.41.081.14≥ 10.0≥ 796≥ 20≥ 167228-31223-247150302
33SH11.4-11.81.14-1.18≥ 10.5≥ 836≥ 20≥ 167231-34247-276150302
35SH11.8-12.31.18-1.23≥ 11.0≥ 876≥ 20≥ 167233-36263-287150302
38SH12.3-12.71.23-1.27≥ 11.4≥ 907≥ 20≥ 197236-39287-310150302
40SH12.5-12.81.25-1.28≥ 11.8≥ 939≥ 20≥ 197238-41302-326150302
42SH12.8-13.21.28-1.32≥ 11.8≥ 939≥ 20≥ 167240-43320-343150302
45SH13.2-13.81.32-1.38≥ 12.6≥ 1003≥ 20≥ 159243-46342-366150302
30UH10.8-11.41.08-1.14≥ 10.2≥ 812≥ 25≥ 199028-31223-247180356
33UH11.3-11.71.13-1.17≥ 10.7≥ 852≥ 25≥ 199031-33247-263180356
35UH11.7-12.11.17-1.21≥ 10.7≥ 852≥ 25≥ 199033-36263-287180356
38UH12.1-12.51.21-1.25≥ 11.4≥ 907≥ 25≥ 199036-39287-310180356
40UH12.5-12.81.25-1.28≥ 11.4≥ 907≥ 25≥ 199038-41302-326180356
28EH10.5-10.81.05-1.08≥ 9.5≥ 756≥ 30≥ 238826-29207-231200392
30EH10.8-11.41.08-1.14≥ 9.5≥ 756≥ 30≥ 238828-31223-241200292
33EH11.3-11.71.13-1.17≥ 10.2≥ 812≥ 30≥ 238831-33247-263200392
35EH11.7-12.11.17-1.21≥ 10.2≥ 812≥ 30≥ 238833-36263-287200392
38EH12.1-12.51.21-1.25≥ 11.4≥ 907≥ 30≥ 238836-39287-310200392
30AH10.8-11.31.08-1.13≥ 10.2≥ 812≥ 35≥ 278528-32223-255220428
33AH11.2-11.71.12-1.17≥ 10.2≥ 812≥ 35≥ 278531-34247-271220428
 
 
Dimension Range, Size and Tolerance

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

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

Block Ndfeb 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 Ndfeb Magnets Outer Radius*Inner Radius*Thickness*Degree*
Maximum75 mm65 mm50.00 mm150
Minimum1.9 mm
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