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Strong Round Neodymium Manget N52 Disc Rare Earth Magnets

1. Material: Sintered neodymium magnet

2. Shape: Disc / Round

3. Dimensions: D12x3mm,D10x2mm,D8x3mm or As required / Customized

4. Grade: N35,N38,N40,N42,N45,N48,N50,N52,N55 (N,M,H,SH,UH,EH,AH)

Click here to check the grade of sintered NdFeB magnet

5. Coating: Nickel,Zinc,Epoxy and etc.

6. Magnetized: Axial or Diametrical Magnetized

7. Max working Temp.: 80℃-220℃
8. Tolerance: +/-0.05mm or +/-0.1mm

  • Product Detail
  • Technical Specifications

Sintered NdFeB magnets greatly expand the applications of permanent magnets.They are widely used in the fields of transportation,energy,communications,home appliances,machinery and medical equipment and have become indispensible function materials in manufacturing and daily life.

Linkup Magnet manufactures sintered neodymium magnet in custom sizes upon requirements.Our machining capabilities provide perfect solutions for both regular shapes and special shapes of NdFeB magnet,with good quality and maintain the price advantage.


What sizes of disc or round NdFeB magnet are available?

Relying on experienced production team and strong maching capability,most sizes of neodymium magnet can be produced with very high quality,and the tolerance can be controlled within +/-0.05mm or +/-0.1mm.

Please see below available sizes of
 disc neodymium magnet

Magnetization Orientation Diameter Thickness
Axial Mangetized OD  240mm  80mm
Diametrical Magnetized OD  80mm  60mm

Different grade of sintered neodymium magnet
Basis on different temperature resistrance,the neodymium magnet are divided into N,M,H,SH,UH,EH,AH series,and the corresponding maximum operating temperature is 80℃,100℃,120℃,150℃,180℃,200℃,220℃.

In the same serires,the higher the grade of NdFeB magnet,the more magnetism it is.For example,in N series,N52 grade have more magnetic power than N35 grade,and the N55 grade is the strongest one.

For initial projects,we are happy to provide magnetic technology support and made magnet samples according to your requirements for prototyping or testing needs.

Check the grade/properities of sintered neodymium magnet.

Surface treatment of sintered neodymium  magnet
For general use,zinc and nickel plating are most common,and the salt spray test can reach 24 hours to 48 hours.
Epoxy or NiCu+Epoxy Coating have a better corrosion resistance,the salt spray test can reach 72 hours.

Coating Type Thickness Clors Resistance
PCT/HAST SST Temp.& Humi.
Zn (White Zn) ≥5 μm Bright Blue —— ★★ ★★★
Zn (Color-plated Zn) ≥5 μm Shining Color —— ★★★ ★★★★
Ni+Cu+N ≥15 μm Silver ★★★ ★★★★ ★★★★★
Ni+Cu+Ni+Cr ≥15 μm Silver ★★★★ ★★★★ ★★★★★
Ni+Cu+Ni+Sn ≥15 μm Silver ★★★★ ★★★★ ★★★★★
Chemic Ni ≥5 μm Silver ★★★★ ★★★★★ ★★★★★
Epoxy ≥12 μm Black ★★★ ★★★★★ ★★★★★
NiCu+Epoxy ≥15 μm Black ★★★ ★★★★★ ★★★★★
Passivated ≤2 μm Silver Grey —— —— ★★★
Phosphated ≤2 μm Silver Grey —— —— ★★★

Magnetized direction of disc / round neodymium magnet
Most of disc neodymium magnet are axial magnetized.But there are some application scenarios that require magnetization of its diametrical direction.If you have special requirements for magnetization,for example,multi-poles on one side,we'll help you to make it happen.



Axial Magnetized Diametrical Magnetized


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Mechanical Physical Property Of Sintered NdFeB Magnet
 Parameter Unit Reference Value
 Vickers hardness Hv ≥550
 Density g/cm3 ≥7.50
 μr Recal Penmeability 1.05
 Tc Curie point 312~380
 Specific resistance μΩ·cm 150
 Bending strength MPa 250
 Compressive strength MPa 1000~1100
 Compressive strength Thermal expansion ℃-1 - (1~3)×10-6K
(⊥Thermal expansion) (⊥)
 Compressive strength Thermal expansion ℃-1 (34)×106K
(∥Thermal expansion) (∥)


Demagnetization Curves Of Sintered NdFeb Magnet (B-H Curves)



N52 N50M


N48SH N45UH

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