Neodymium Disc Magnet


Custom Neodymium Disc Magnet Supplier and Manufacturer


Are You an OEM Manufacturer?

Yes

Dongguan KENENG International Trading Co., Ltd is a neodymium disc magnet manufacturer. The company has 15 years experiences in magnets design, manufacturing , coating and export to all over the world , we have won good reputation in this industry for our excellent and stable quality, prompt delivery and fast response .

KENENG is a professional neodymium magnet supplier, and we can manufacture neodymium strong magnet (circular), NdFeB strong magnet (square), single-sided magnet, rubber magnet, ferrite black magnet, circular strong magnet, square strong magnet, ring strong magnet, countersunk strong magnet, screw hole strong magnet, straight hole strong magnet, strip strong magnet, special-shaped strong magnet, trapezoidal strong magnet, etc., and has a complete and scientific quality management system. Our company is recognized by the industry for its integrity, strength and product quality.

KENENG has strictly QC from raw materials to output products. We have MSDS /ROHS/REACH/ISO 9001 certificates.

Custom Neodymium Disc Magnet

KENENG has custom neodymium magnets. We support customized magnets according to customers’ drawings and can meet the specification and size requirements of many industries for NdFeB with high strength magnetic force, never degaussing, and antirust coating. We can also customize 3M adhesive magnets.

Tips: Under the condition of the same diameter and the same performance, the thicker the disc magnets are, the stronger the magnetic force, you can choose the appropriate size according to your own needs. 

If you have any needs, please contact KENENG, we will provide you with the best quality service.

Types of customization you can choose from

Neodymium magnet, also known as NdFeB magnet, is a tetetic crystal system made of Neodymium, iron and boron (Nd2Fe14B).  In 1982, Sumitomo Special Metals’ Misaki Sagawa discovered neodymium magnets.  The magnetic energy product (BHmax) of this magnet was greater than that of a samarium cobalt magnet, making it the largest material in the world at the time.  Later, Sumitomo Special Metals successfully developed the powder metallurgy process and general motors successfully developed a melt-spinning process to make Ndfeb magnets.  The magnet is now the second most magnetic permanent holmium zero magnet and the most commonly used rare earth magnet.  Ndfeb magnets are widely used in electronic products, such as mobile phones, hard disks, earphones, and battery-powered tools.

In order to avoid corrosion damage, it is necessary to do protective treatment on the surface of permanent magnet materials, such as gold, nickel, zinc, tin plating, and surface coating epoxy resin.  

Materials

  • NdFeB
  • Ferrite
  • SmCo
  • cobalt
  • Aluminium
  • Bronze
  • EPDM/Neoprene/rubber, etc

Size

Hot selling specifications:Size:Diameter×Thickness
4×24×35×15×1.55×2
5×35×45×56×16×1.5
6×26×36×46×58×1
8×1.58×28×38×48×5
10×110×1.510×210×310×4
10×512×112×1.512×212×3
12×412×514×214×314×4
14×515×115×1.515×215×3
15×415×518×218×318×4
18×520×120×220×320×4
20×525×225×325×425×5
30×230×330×430×5

Finishing

  • Plating(Zn,Ni,Gold)
  • Epoxy
  • Electrophoresis
  • Passivation
  • Vacuum deposition

Comparison of different thicknesses

Custom Neodymium Disc Magnet

Materials we can use on Neodymium Disc Magnet

NdFeB common code:

Material codeBrHCIntrinsic HCBH MaxMax work temperature
Br mTbHc KA/miHc KA/m(BH)max KJ/m3Tw ℃
(KG)(kOe)(kOe)(MGOe)
N351170-1210≥868≥955263-28780
(11.7-12.1)(≥10.9)(≥12)(33-36)80
N381210-1250≥899≥955287-31080
(12.1-12.5)(≥11.3)(≥12)(36-39)80
N401250-1280≥923≥955318-34280
(12.5-12.8)(≥11.6)(≥12)(38-41)80
N421280-1320≥923≥955318-34280
(12.8-13.2)(≥11.6)(≥12)(38-41)80
N451320-1380≥876≥955342-36680
(13.2-13.8)(≥11.0)(≥12)(43-46)80
N481380-1420≥835≥876366-39080
(13.8-14.2)(≥10.5)(≥11)(46-49)80
N33H1130-1170≥836≥1353247-241120
(11.3-11.7)(≥10.5)(≥17)(31-34)120
N35H1170-1210≥868≥1353263-287120
(11.7-12.1)(≥10.9)(≥17)(33-36)120
N38H1210-1250≥899≥1353287-310120
(12.1-12.5)(≥11.3)(≥17)(36-39)120
N40H1240-1280≥923≥1353302-326120
(12.4-12.8)(≥11.6)(≥17)(38-41)120
N42H1280-1320≥955≥1353318-342120
(12.8-13.2)(≥12.0)(≥17)(40-43)120
N45H1320-1360≥955≥1353342-366120
(13.2-13.6)(≥12.0)(≥17)(43-46)120
N33SH1130-1170≥844≥1592247-272150
(11.3-11.7)(≥10.6)(≥20)(31-34)150
N35SH1170-1210≥876≥1592263-287150
(11.7-12.1)(≥11.0)(≥20)(33-36)150
N38SH1210-1250≥907≥1592287-310150
(12.1-12.5)(≥11.4)(≥20)(36-39)150
N40SH1240-1280≥939≥1592302-326150
(12.4-12.8)(≥11.8)(≥20)(38-41)150

Related Products

Neodymium Disc Magnet Manufacturer in China

1.As one of the most experienced neodymium magnet manufacturers in China, KENENG’s neodymium disc magnet has more than 1200 spot specifications and a total conventional inventory of 100 million pieces.

2. We support customized magnets according to customers’ drawings and can meet the specification and size requirements of many industries for NdFeB with high strength magnetic force, never degaussing and antirust coating.

3. KENENG is a magnet, strong magnetic, single magnetic, hook magnet, fishing magnet, ferrite, bread magnet, polishing magnetic ball, magnetic frame, magnetic bar, samarium cobalt magnetic, rubber magnetic, teaching magnet, magnetic tile and other products professional production and processing company, has a complete scientific quality control system.

Production equipment for Neodymium Disc Magnet

Production equipment for Neodymium Disc Magnet

Application industries of Neodymium Disc Magnet

FAQ

If a substance wants to be magnetic, it needs to meet two conditions: one is that there are lone pair electrons in the outermost layer of atoms, and the other is that the atoms that make up the substance are arranged neatly. However, there are only a few metals in nature, such as iron, cobalt and nickel, that meet these two requirements at the same time.

It is found that iron atoms have 26 extranuclear electrons, of which the outermost layer has a lone pair electron, and the outermost layer of cobalt and nickel atoms also has lone pair electrons. However, because the arrangement of magnetic domains, the small magnetic regions in these substances, is irregular, and the magnetic fields generated by these small regions cancel each other, these metals usually do not show the same magnetic force as magnets. However, under the action of external magnetic field force, the magnetic field direction of these magnetic domains is consistent, that is, they are magnetized, and the magnetized material will show magnetism externally.

We can verify through such an experiment: if a coin is attracted by a magnet, the coin will be magnetized, and other ordinary coins will be attracted when they are close to the coin, indicating that the magnetized coin shows external magnetism.

There are two types of magnets, one with permanent magnets and the other with non permanent magnets. It can be seen from the name that the magnetism of a permanent magnet can be maintained for a long time, and the demagnetization of a non permanent magnet will occur after a period of time. All natural magnets are permanent magnets, and only some rubidium magnets in artificial magnets are permanent magnets.

In daily life, magnets may be degaussed if they are not careful. The essence of this phenomenon is that the position of the neat magnetic domain inside the magnet changes under the external action. The direction of the magnetic field generated by the magnetic domain is no longer unified, and the external magnetic field will no longer show magnetism. High temperature or fierce collision can easily make the magnet appear this kind of situation.

In order to prevent magnetic mines, warships will also demagnetize the hull before launching. Since it is not possible to demagnetize warships with ordinary high temperature or impact, warships generally use devices that can generate magnetic fields in the opposite direction to those generated by the ship body to demagnetize.