customized large ring Sintered neodymium magnets

Place of Origin: Zhejiang,China (Mainland)
Application: Industrial Magnet
Shape: Others
Type: Permanent
Composite: NdFeB Magnet
Brand Name: HONY
Tolerance: +/-0.05mm
Size: Various
Shape: ring
Coating Thickness: 10-15
Ring magnets for sale: Strong magnet
Working temperature: High up to 200℃
Grade: N,M,H,SH,UH,EH

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Product Description

Payment & Shipping Terms Supply Capacity
Payment Terms:L/C, D/P, D/A, T/TProduction Capacity:10000
Min. Order:1000 Piece/PiecesPacking:carton
Means of Transport:Ocean, Air, LandDelivery Date:25

customized large ring Sintered neodymium magnets

Directions of Magnetization

 

a. Thickness Magnetized

b. Axially Magnetized 

c. Diametrally Magnetized

d. Multi-poles magnetized

e. Radial Magnetized 

f. Customized specific requirements magnetized


1. Materials

 

    Sintered Neodymium-Iron-Boron

 

 

2. Grades

 

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

 

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

 

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

 

3. Shapes

 

    Others available: Block, Ring, Cylinder, Disc, Customized shape as your design.

 

 

4. Size

 

    Length x Width x Thickness You could choose freely according to your plan.

 

 

5. Coatings

 

    Others available: Nickel, Zinc, Gold, Silver, Epoxy, Parylene, etc.

 

6. Orientation

 

     Through the direction of thickness or according to your needs.

  

7. Quality

 

    Our expert quality control department ensures magnets are high quality.

  

8. Applications

 

     Sensors, motors, rotors, wind turbine,wind generators, etc



customized large ring Sintered neodymium magnets


customized large ring Sintered neodymium magnets


Magnet Information
DescriptionSintered NdFeB Magnet
Material: Neodymium-Iron-Boron
Shape: Ring, Thin-wall ring, Disc, Cylinder, Segment,Contersunk, Tapezoid, Irregular Shape…With special shape requirement, we have own R & D dept. to support
Coating:Ni-Cu-Ni, Nickel, Zn, Gold,  Cr, Silver, Copper, Anti-Rust Oil, Spray Rolling, Black, Grey Epoxy,  PTFE, Parylene, and so on.
Magnetic Performance Sheet
GradeRemanence(Br)

Coercivity(BH)

max kJ/m3

 Temperature
mTKJ/M3 (Tw°C)
(kGs)MGOe
N35-N521170-1480263-42280 °C
(10.3-14.8)(33-53)
35M-50M1080-1450263-406100 °C
(10.8-14.5)(33-51)
35H-48H1170-1430(263-390)120 °C
(11.7-14.3)(33-49)
35SH-45SH1130-1380247-366150 °C
(11.3-13.8)(33-46)
30UH-40UH1080-1280263-326180 °C
(10.8-12.8)(33-41)
30EH-38EH1080-1250223-310200 °C
(10.8-12.5)(28-39)
Magnet Coating
CoatingThickness  (Microns)ColorResistance 
Anti-Rust Oil1TrancparencyTemporary Protection
Spray Rolling10-30Common Black24 hours of salt spray test
Zinc5-10Bright Blue24 hours of salt spray test
Nickle10-15Bright Silver48 hours of salt spray test
Ni+Cu10-20GoldTemporary Protection
Ni+Cu+Epoxy15-30Grey, BlackExcellent Against Humidity
& Salt Spray
Epoxy15-25Grey, Black72 hours of salt spray test
Parylene 10-30Trancparency200 hours of Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria


customized large ring Sintered neodymium magnets


Gradecorrosion stablecorrosion stable & high resist   of temp.RemanenceNormal coercivityIntrinsic coercivityMax. energy product Max. operating temp.
specify as: grade+"/S"specify as: grade+"/ST"BrHcbHcjBH(max)
mTkA/mkA/m (min)kJ/m3
mintypmintyp20 ℃120℃ for "/ST"150℃ for "/ST"180℃ for "/ST"mintyp
N 35

11701220870920955


26327980
N 38

12201260870920955


27930380
N 40

12601300870920955


30331880
N 42

13001330870920955


31833480
N 45

13301370900930955


33435880
N 48

13701410900930955


35838280
N 50

14101440830850875


38239870
N 52

14401470830850875


39841470
N 33 M

114011708308801114


239263100
N 35 M

117012208709201114


263279100
N 38 M

122012609009501114


279303100
N 40 M

126013009309801114


303318100
N 42 M

1300133095010001114


318334100
N 45 M

1330137098010301114


334358100
N 48 M

13701410101010601114


35838290
N 50 M

14101440103010801114


38239890
N 30 H

108011408108601353


223239120
N 33 H

114011708308801353


239263120
N 35 H35 H/S
117012208709201353


263279120
N 38 H38 H/S38 H/ST122012609009501353500

279303120
N 40 H40 H/S40 H/ST126013009309801353500

303318120
N 42 H42 H/S40 H/ST1300133095010001353500

318334120
N 44 H44 H/S44 H/ST1330136097010201353500

334350120
N 46 H46 H/S46 H/ST1360138098010401353500

350366120
N 48 H48 H/S
13801410101010601353


366382120
N50H

140014408308501353


380390120
N 30 SH

108011408108601592


223239150
N 33 SH

114011708308801592


239263150
N 35 SH35 SH/S35 SH/ST117012208709201592
500
263279150
N 38 SH38 SH/S38 SH/ST122012609009501592
500
279303150
N 40 SH40 SH/S40 SH/ST126013009309801592
500
303318150
N 42 SH42 SH/S42 SH/ST1300133095010001592
500
318334150
N 44 SH44 SH/S44 SH/ST1330136097010201592
500
334350150
N 46 SH46 SH/S
1360138098010401592


350366150
N 28 UH

104010807708101989


199223180
N 30 UH30 UH/S30 UH/ST108011408108601989
720
223239180
N 33 UH33 UH/S33 UH/ST114011708308801989
720
239263180
N 35 UH35 UH/S35 UH/ST117012208709201989
720
263279180
N 38 UH38 UH/S38 UH/ST122012609009501989
720
279303180
N 40 UH 40 UH/S
126013009309801989


303318180
N 42 UH42 UH/S
1300133095010001989


318334180
N 28 EH

104010807708102387


199223200
N 30 EH30 EH/S30 EH/ST108011408108602387
950
223239200
N 33 EH33 EH/S 33 EH/ST114011708308802387
950
239263200
N 35 EH35 EH/S35 EH/ST117012208709202387
950
263279200
N 38 EH38 EH/S
122012609009502387


279303200
N 25 AH 25 AH/S 25 AH/ST97010207307702787
1200900180200220
N 28 AH28 AH/S28 AH/ST104010807708102787
1200900203218220
N 30 AH 30 AH/S 30 AH/ST108011408108602787
1200900220250220
N 25 BH 25 BH/S 25 BH/ST95010007107503000
1300950170190230


customized large ring Sintered neodymium magnets


Delivery

All available shipping ways could be applied, by courier, by air or by sea.

Appointed shipping company or our own forwarders all could be used in shipment.

Full-way tracking the cargos for you before the goods arrive.

 

Buyer's Guide

In order to quote you the best price quickly, please provide the following information:

1.Product size,grade,coating,etc.

2.Order quantity;

3.Attached the drawings if customized
4.Any special packing or other requirements

 

Our advantage

1. Fast reply: all your enquiry will be replied within 24 hours; 

2. Reasonable price: we are direct manufacturer and able to offer better price; 

3. Good quality: we are experienced in quality control;

4. Fast delivery time:7-20 days


FAQ:

1. What are neodymium magnets? Are they the same as "rare earth"?

Neodymium magnets are a member of the rare earth magnet family. They are called "rare earth" because neodymium is a member of the "rare earth" elements on the periodic table. Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world.

 

2. What are neodymium magnets made from and how are they made?

Neodymium magnets are actually composed of neodymium, iron and boron (they are also referred to as NIB or NdFeB magnets).  The powdered mixture is pressed under great pressure into molds.  The material is then sintered (heated under a vacuum), cooled, and then ground or sliced into the desired shape.  Coatings are then applied if required.  Finally, the blank magnets are magnetized by exposing them to a very powerful magnetic field in excess of 30 KOe.

 

3. How is the strength of a magnet measured?

Gaussmeters are used to measure the magnetic field density at the surface of the magnet. This is referred to as the surface field and is measured in Gauss (or Tesla).  Pull Force Testers are used to test the holding force of a magnet that is in contact with a flat steel plate. Pull forces are measured in pounds (or kilograms).

 

4. What does the "N rating", or grade, of the neodymium magnets mean?

The grade, or "N rating" of the magnet refers to the Maximum Energy Product of the material that the magnet is made from.  It refers to the maximum strength that the material can be magnetized to.  The grade of neodymium magnets is generally measured in units millions of Gauss Oersted (MGOe).  A magnet of grade N42 has a Maximum Energy Product of 42 MGOe.  Generally speaking, the higher the grade, the stronger the magnet.

 

5. What is the difference between the different platings and coatings?

Choosing different coatings does not affect the magnetic strength or performance of the magnet, except for our Plastic and Rubber Coated Magnets.  The preferred coating is dictated by preference or intended application.  More detailed specifications can be found on our Specs page.

 

♦ Nickel is the most common choice for plating neodymium magnets. It is actually a triple  plating of nickel-copper-  

   nickel. It has a shiny silver finish and has good resistance to corrosion in many applications. It is not waterproof.

 

 

♦ Black nickel has a shiny appearance in a charcoal or gunmetal color. A black dye is added to the final nickel plating 

    process of the triple plating of nickelcopperblack nickel.

    NOTE: It does not appear completely black like epoxy coatings. It is also still shiny, much like plain nickel plated magnets.

 

♦ Zinc has a dull gray/bluish finish, that is more susceptible to corrosion than nickel. Zinc can leave a black residue on

   hands and other items.

 

♦ Epoxy is basically a plastic coating that is more corrosion resistant as long as the coating is intact. It is easily scratched. 

   From our experience, it is the least durable of the available coatings.

 

♦ Gold plating is applied over the top of standard nickel plating. Gold plated magnets have the same characteristics as 

   nickel plated ones, but with a gold finish



Category: Sintered ring ndfeb magnet

Related Category: Sintered arc ndfeb magnet  Sintered disc ndfeb magnet  Sintered block ndfeb magnet 


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