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Company NameNINGBO COCOMAG INDUSTRY CO., LTD.
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About UsAbout Us
Established in 2004, Ningbo Keke Magnet Technology Co., Ltd is a professional Neodymium magnet and AlNiCo magnet high-tech enterprise, . Our company commits to the R&D, production and application of rare earth permanent magnetic materials. Our production site, with an area of 30000 square meters, is located in Yuyao, Ningbo City, Zhejiang Province, China.
Capabilities
Keke Magnet owns the annual capacity of 2000 metric tons productivity of various types of high-grade magnets. The Neodymium magnet covers N35-N54, N35M-N52M, N33H-N50H, N33SH-N45SH, N30UH-N42UH, N30EH-N38EH, N28AH-N33AH; AlNiCo magnet covers AlNiCo3----AlNiCo9, AlNiCo3----AlNiCo8HC. The products are widely used in motors, wind power, the elevator traction machine, medical equipment, speakers, magnetic transmission, aerospace and other fields. Sold to the Yangtze River Delta, the Pearl River Delta, and all through the country. they are also widely exported to the North America, Europe, Southeast and many other developing countries.
Quality Control
The quality is the life of the enterprise; We are certified with ISO/TS16949: 2009 and RoHS. The consistently high quality and low cost are guaranteed.
Our belief
We adhere to the enterprise spirit that sincerity uppermost, continuous improvement, quality first, customer satisfaction. Scientific management and the principle of equality, mutual benefit and win-win market strategy are promoted. We believe that we can establish long-term friendly business partnership and promote the development of both trade and friendship to create the brilliancy together!
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NameMr. Yale
Address Sanqishi Town, Ningbo City, Ningbo, Zhejiang, China
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Products Details
Rare Earth Super Strong powerful magnetic n42 block sintered Ndfeb neodymium magnets

Permanent Magnet Materials Introduction
Permanent magnets are used in the following major groups: acoustic transducers, motors and generators, magneto mechanical devices, and magnetic field and imaging systems. You will find permanent magnets in many products, such as televisions, telephones, computers, audio systems and automobiles.
The permanent magnet family consists of non-rare earth permanent magnets and rare earth magnets. The non-rare earth magnets include Alnico magnets and Ceramic magnets. Rare earth magnets include Sm-Co magnets and NdFeB magnets (Neodymium-Iron-Boron).
Although non-rare earth magnets are used in the majority of these applications due to their economic cost, rare earth permanent magnets have many distinguishing characteristics, such as a large Maximum Energy Product, Two major families of rare earth permanent magnets, Sm-Co magnets and NdFeB magnets.
How to Choose Permanent Magnet Materials
Each permanent magnet material discussed above has its own pros and cons. How to choose the right one for your particular application is a challenge to any user. A balance between cost and performance must be considered in selecting of permanent magnet material. In Reference Information section of this page, several reference books are listed. Following is a Comparison Table to help you select a right permanent magnet material for your applications.
Permanent Magnet Material Comparison Table Note: The data listed in the table are for reference only

Products Details:
  1. Widely Performance: N35-N54, N35M-N52M, N33H-N50H, N33SH-N45SH, N30UH-N42UH, N30EH-N38EH, N28AH-N33AH;
    2. Best Price: We are manufacture in Ningbo. We have a whole set of production process equipment from Dosage to Cutting.
  1. Fast delivery: 8-15days.

Product Description:
1. Materials: Ne-Fe-B
2. Shape: Various as you wish
3. Certificate: ISO/TSI6949: 2009



Specifications:
A. Materials: Neodymium-Ferrum-Boron;
B. Grades: N35-N54, 35M-52M, 33H-50H, 33SH-45SH, 30UH-42UH, 30EH-38EH, and 28AH-33AHB. 
C. Coating: Various coatings to protect the magnets, such as Ni, Zn, gold, copper, epoxy, chemical, parylene and so on;
D. Shape: Block, Ring, Disc, Cylinder, Arc(Segment), Half Ring, and Customized Design;
E. Size: customized size per your requirements, largest block length of 150mm, biggest ring of D220mm, smallest thickness of 0.5mm
F. Performance: High coercive force (Hcb) can reach 9.7kOe (772KA/M), the max operation temp (Tw) is up to 220 degree centigrade or 380 curie temperature;
G. Applications: Magnet Separators, Sensors, Motors, Rotors, Wind turbines, Wind generators, Loudspeakers, Magnetic hooks, Magnetic holder, Filters Automobiles Magnetic jewelries, toys, magnetic buttons, Magnetic therapy and so on;

Production process: 
Raw Materials-->Mixture--->Vacuum Melting--- > Powder Production--- >Molding ---> Vacuum Sintering--- > Testing--- >Mechanical Processing--- > Surface Coating--- >Magnetized--- > Inspecting--- > Packing and Shipping. 



Directions of Magnetization:
a. Thickness Magnetized
b. Axially Magnetized 
c. Diametrally Magnetized
d. Multi-poles magnetized
e. Radial Magnetized 
f. Customized specific requirements magnetized

Inquiry   
To receive a quote for Neodymium Arc magnets, please provide the following details: 
  1. Outer Diameter, Inner Diameter or, Degree of Angle;
  2. Thickness, Length;
  3. Grades;
  4. Coating;
  5. Tolerances and Magnetization Direction (North on the Outside Face / South on the Outside Face / Magnetized through Circumference / Magnetized through Thickness ). 
  6. Testing Conditions


neodymium magnet packing details and delivery




Welcome to inquiry!

We can provide almost all grades in large quantity. In addition, if you customized products,
    
    




 
High Performance Sinterated NdFeB Magnet ItemGradeRemanence;BrCoercive Force;bHcIntrisic Coercive Force;iHcMax Energy Product;(BH)maxWorking
Temp.
 
kGsTkOeKA/mkOeKA/mMGOeKJ/m3
Max.Min.Max.Min.Max.Min.Max.Min.
NN5415.1 14.5 1.51 1.45 ≥10.5≥836≥11≥8765551438406≤80
N5214.8 14.2 1.48 1.42 ≥10.5≥836≥11≥8765349422390≤80
N5014.5 14.0 1.45 1.40 ≥11.0≥876≥12≥9555147406374≤80
N4814.3 13.7 1.43 1.37 ≥11.0≥876≥12≥9554945390358≤80
N4513.8 13.2 1.38 1.32 ≥11.0≥876≥12≥9554642366334≤80
N4213.5 12.9 1.35 1.29 ≥11.0≥876≥12≥9554440350318≤80
N4013.2 12.6 1.32 1.26 ≥11.0≥876≥12≥9554138334302≤80
N3813.0 12.2 1.30 1.22 ≥11.0≥876≥12≥9554036318287≤80
N3512.2 11.7 1.22 1.17 ≥10.9≥868≥12≥9553633287263≤80
MN52M14.8 14.2 1.48 1.42 ≥13.3≥1059≥14≥11144349422390≤100
N50M14.5 14.0 1.45 1.40 ≥13.1≥1043≥14≥11144147406374≤100
N48M14.3 13.7 1.43 1.37 ≥12.8≥1019≥14≥11144945390358≤100
N45M13.8 13.2 1.38 1.32 ≥12.4≥987≥14≥11144642366334≤100
N42M13.5 12.9 1.35 1.29 ≥12.1≥963≥14≥11144440350318≤100
N40M13.2 12.6 1.32 1.26 ≥11.8≥939≥14≥11144138334302≤100
N38M13.0 12.2 1.30 1.22 ≥11.7≥915≥14≥11144036318287≤100
N35M 12.2 11.7 1.22 1.17 ≥10.9≥868≥14≥11143633287263≤100
HN50H14.5 14.0 1.45 1.40 ≥12.9≥1027≥16≥12745147406374≤120
N48H14.3 13.7 1.43 1.37 ≥12.7≥1011≥16≥12744945390358≤120
N46H14.0 13.4 1.40 1.34 ≥12.5≥995≥17≥13534743374342≤120
N44H13.7 13.1 1.37 1.31 ≥12.3≥979≥17≥13534541358326≤120
N42H13.5 12.9 1.35 1.29 ≥12.1≥963≥17≥13534440350318≤120
N40H13.2 12.6 1.32 1.26 ≥11.8≥939≥17≥13534238334302≤120
N38H13.0 12.2 1.30 1.22 ≥11.5≥915≥17≥13534036318287≤120
N35H12.4 11.7 1.24 1.17 ≥11.0≥876≥17≥13533733295263≤120
N33H11.7 11.3 1.17 1.13 ≥10.5≥836≥17≥13533431271247≤120
SHN45SH14.0 13.4 1.40 1.34 ≥12.5≥995≥20≥15924743374342≤150
N44SH13.7 13.1 1.37 1.31 ≥12.3≥979≥20≥15924541358326≤150
N42SH13.5 12.9 1.35 1.29 ≥12.1≥963≥20≥15924440350318≤150
N40SH13.2 12.6 1.32 1.26 ≥11.8≥939≥20≥15924238334302≤150
N38SH12.9 12.2 1.29 1.22 ≥11.5≥915≥20≥15924036318287≤150
N35SH12.4 11.7 1.24 1.17 ≥11.0≥876≥20≥15923733295263≤150
N33SH12.1 11.4 1.21 1.14 ≥10.7≥852≥20≥15923531279247≤150
UHN42UH13.5 12.9 1.35 1.29 ≥12.1≥963≥25≥19904440350318≤180
N40UH13.2 12.6 1.32 1.26 ≥11.8≥939≥25≥19904238334302≤180
N38UH12.9 12.2 1.29 1.22 ≥11.5≥915≥25≥19904036318287≤180
N35UH12.4 11.7 1.24 1.17 ≥11.0≥876≥25≥19903733295263≤180
N33UH12.1 11.4 1.21 1.14 ≥10.7≥852≥25≥19903531279247≤180
N30UH11.6 10.8 1.16 1.08 ≥10.2≥812≥25≥19903228255223≤180
EHN38EH12.9 12.2 1.29 1.22 ≥11.5≥915≥30≥23884036318287≤200
N35EH12.4 11.7 1.24 1.17 ≥11.0≥876≥30≥23883733295263≤200
N33EH12.1 11.4 1.21 1.14 ≥10.7≥851≥30≥23883531279247≤200
N30EH11.5 10.8 1.15 1.08 ≥10.2≥812≥30≥23883228255223≤200
AHN33AH12.1 11.4 1.21 1.14 ≥10.7≥852≥35≥27863531279247≤230
N30AH11.5 10.8 1.15 1.08 ≥10.2≥812≥35≥27863228255223≤230
N28AH11.2 10.4 1.12 1.04 ≥9.70≥772≥35≥27863026239207≤230
 
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Mainly ProductsRare Earth Super Strong powerful magnetic n42 block sintered Ndfeb neodymium magnets

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