Neodymium permanent big ring magnets  

 

Summarize:

 

      Sintered neodymium-iron-boron(NdFeB) permanent-magnet material was developed in 1983. The major composition of NdFeB magnets is Nd2Fe14B. It is the highest magnetism performance permanent-magnet material at present, that can be made into the complex shape magnet, and cut.

 

Property:

 

      The (BH) max value of the sintered NdFeB magnet is 5 to 15 times higher than sintered ferrite magnets. Hcj value is 5 to 10 times higher than sintered ferrite and 6 to 10 times higher than AINiCo magnets.

      The potential magnetic properties of NdFeB magnets are very high. Theoretically, their (BH) max value can be reached to 527 kJ/m³(66MGOe). They can even attract object which weight is 640 times heavier than themselves.

 

 

Ring Magnet Specification: 

 

1.Shape: 

 

Ring. Customized design (design proper magnets for clients specific requirements) 

 

 

 

2.Coating: 

 

Ni-Cu-Ni, Nickel, Zn, Gold, Silver, Copper, Epoxy, Chemical, PTFE, Parylene, Everlube, Passivation and more.

 

Surface Treatment Of NdFeB Magnet
Zn	Suitable for common environment
Double Nickle Layer	Suitable for dew atmosphere and can be stably used for a long time
NiCuNi	It has a stronger protection, adhesive ability and longer working life-span
Epoxy	Suitable for severe corrosive environment
Phosphorization Passivation	Suitable for the situation of short-term transportation and storage
Gold	Used for high level electronic equipments and decoration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3. Grades Range:

 

N35-N52; N35M-N50M; N35H-N48H, N35SH-N45SH; N30UH-N40UH, N30EH-N38EH

 

Magnetic Characteristics

 

-The grade like N48-N52 could meet your requirements on strong power

 

-Standard one like N35 or N40 is okay for your normal applications

 

 

4.Maximum Working Temperature:

 

N35-N52,     80°C(176°F)

 

35M-50M,     100°C(212°F)

 

35H-48H,    120°C(248°F)

 

35SH-45SH,  150°C(302°F)

 

33UH-40UH,  180°C(356°F)

 

33EH-38EH,  200°C(392°F)

 

28AH-35AH,  220°C(428°F)

 

 

5.Tolerance:

 

+/-0.05mm for small dimensions,

 

+/-0.1mm for common specifications,

 

+/-0.15mm for big blocks

 

6. Directions of Magnetization:

 

a. Axially Magnetized

 

b. Diametrally Magnetized

 

c. Radial Magnetized

 

d. Multi-poles magnetized

 

e. Customzied specific requirements magnetized 

 

 Axially Magnetized and Diametrally Magnetized

 

 

 Production Process Flow Chart

 

 

Technology Advantage: We have professional technical staff, the remarkable technology research center, large scale production factory

 

Price Advantage: We take The centralization, scale production, reduce the cost . In the same quality products, our price is cheaper than industry average.

 

 

Application:

 

      Sintered Ring NdFeb Magnets are widely used in many fields, such as motors, sensors, microphones, wind turbines, wind generators, VCMs in hard disk drives, printer, switchboard, loudspeakers, magnetic separation, magnetic hooks, NdFeb Ring Magnet, magnetic holder, magnetic chuck, common daily use, and so on.

 

 

Packing:

 

 

Cheapest shipping:

 

 

Our Factory:

 

 

About Us:

 

 

  

  

 

Relevant product:

 

1) Neodymium magnet

 

2) Ring ndfeb magnet

 

3) Disc ndfeb magnet

 

4) Block ndfeb magnet

 

5) Magnetic Ball

 

 

If you want to know more about  ring ndfeb magnets, please don't hesitate to contact us.