Super Strong Nickel Coating Magnets Neodymium magnete With Countersunk Hole
Neodymium magnets, commonly known as NdFeB magnets, are a kind of high performance rare earth permanent magnet which constructed from an alloy of Neodymium, Boron, and Iron. Sintered Neodymium magnet is available in a wide range shape and dimension. A Neodymium countersunk magnet is a functional type of magnet ring with one end surface show as a standard ring, but the other end surface has an angled countersunk hole. It is normally measured by the outer diameter, through hole diameter, major diameter, depth, and angle. The angle generally being 90 degrees. Its countersunk hole provides a convenient way to fix the magnets onto both magnetic and non-magnetic surface securely using a matching standard countersunk screw. Almost entirely of Neodymium countersunk magnets are magnetized along its axial axis. In addition, countersunk hole is also available in Neodymium block magnet and Neodymium arc magnet.
1. Coatings of Neodymium Magnets
2. Magnetic Properties of Sintered Neodymium Magnet
| Sintered NdFeB Magnet |
| Grade |
Residual Induction (Br) |
Coercive Force (Hcb) |
Intrinsic Coercive Force (Hcj) |
Max Energy Product (BH)max |
Max Working Temp. |
| T |
kGs |
kA/m |
kOe |
kA/m |
kOe |
Kj/m³ |
MGOe |
(°C) |
| N35 |
1.17-1.22 |
11.7-12.2 |
≥868 |
≥10.9 |
≥955 |
≥12 |
263-287 |
33-36 |
80 |
| N38 |
1.22-1.25 |
12.2-12.5 |
≥899 |
≥11.3 |
≥955 |
≥12 |
287-310 |
36-39 |
80 |
| N40 |
1.25-1.28 |
12.5-12.8 |
≥907 |
≥11.4 |
≥955 |
≥12 |
302-326 |
38-41 |
80 |
| N42 |
1.28-1.32 |
12.8-13.2 |
≥915 |
≥11.5 |
≥955 |
≥12 |
318-342 |
40-43 |
80 |
| N45 |
1.32-1.38 |
13.2-13.8 |
≥923 |
≥11.6 |
≥955 |
≥12 |
342-366 |
43-46 |
80 |
| N48 |
1.38-1.42 |
13.8-14.2 |
≥923 |
≥11.6 |
≥955 |
≥12 |
366-390 |
46-49 |
80 |
| N50 |
1.40-1.45 |
14.0-14.5 |
≥796 |
≥10 |
≥876 |
≥11 |
374-406 |
47-51 |
60 |
| N52 |
1.43-1.48 |
14.3-14.8 |
≥796 |
≥10 |
≥876 |
≥11 |
390-422 |
49-53 |
60 |
| N35M |
1.17-1.22 |
11.7-12.2 |
≥868 |
≥10.9 |
≥1114 |
≥14 |
263-287 |
33-36 |
100 |
| N38M |
1.22-1.25 |
12.2-12.5 |
≥899 |
≥11.3 |
≥1114 |
≥14 |
287-310 |
36-39 |
100 |
| N40M |
1.25-1.28 |
12.5-12.8 |
≥923 |
≥11.6 |
≥1114 |
≥14 |
302-326 |
38-41 |
100 |
| N42M |
1.28-1.32 |
12.8-13.2 |
≥955 |
≥12 |
≥1114 |
≥14 |
318-342 |
40-43 |
100 |
| N45M |
1.32-1.38 |
13.2-13.8 |
≥955 |
≥12.5 |
≥1114 |
≥14 |
342-366 |
43-46 |
100 |
| N48M |
1.37-1.43 |
13.7-14.3 |
≥1027 |
≥12.9 |
≥1114 |
≥14 |
366-390 |
46-49 |
100 |
| N50M |
1.40-1.45 |
14.0-14.5 |
≥1033 |
≥13 |
≥1114 |
≥14 |
382-406 |
48-51 |
100 |
| N35H |
1.17-1.22 |
11.7-12.2 |
≥868 |
≥10.9 |
≥1353 |
≥17 |
263-287 |
33-36 |
120 |
| N38H |
1.22-1.25 |
12.2-12.5 |
≥899 |
≥11.3 |
≥1353 |
≥ 17 |
287-310 |
36-39 |
120 |
| N40H |
1.25-1.28 |
12.5-12.8 |
≥923 |
≥11.6 |
≥1353 |
≥17 |
302-326 |
38-41 |
120 |
| N42H |
1.28-1.32 |
12.8-13.2 |
≥955 |
≥12 |
≥1353 |
≥17 |
318-342 |
40-43 |
120 |
| N45H |
1.32-1.36 |
13.2-13.6 |
≥963 |
≥12.1 |
≥1353 |
≥ 17 |
326-358 |
43-46 |
120 |
| N48H |
1.37-1.43 |
13.7-14.3 |
≥995 |
≥12.5 |
≥1353 |
≥17 |
366-390 |
46-49 |
120 |
| N35SH |
1.17-1.22 |
11.7-12.2 |
≥876 |
≥11 |
≥1592 |
≥20 |
263-287 |
33-36 |
150 |
| N38SH |
1.22-1.25 |
12.2-12.5 |
≥907 |
≥11.4 |
≥1592 |
≥20 |
287-310 |
36-39 |
150 |
| N40SH |
1.25-1.28 |
12.5-12.8 |
≥939 |
≥11.8 |
≥1592 |
≥20 |
302-326 |
38-41 |
150 |
| N42SH |
1.28-1.32 |
12.8-13.2 |
≥987 |
≥12.4 |
≥1592 |
≥20 |
318-342 |
40-43 |
150 |
| N45SH |
1.32-1.38 |
13.2-13.8 |
≥1003 |
≥12.6 |
≥1592 |
≥20 |
342-366 |
43-46 |
150 |
| N28UH |
1.04-108 |
10.4-10.8 |
≥764 |
≥9.6 |
≥1990 |
≥25 |
207-231 |
26-29 |
180 |
| N30UH |
1.08-1.13 |
10.8-11.3 |
≥812 |
≥10.2 |
≥1990 |
≥25 |
223-247 |
28-31 |
180 |
| N33UH |
1.13-1.17 |
11.3-11.7 |
≥852 |
≥10.7 |
≥1990 |
≥25 |
247-271 |
31-34 |
180 |
| N35UH |
1.17-1.22 |
11.7-12.2 |
≥860 |
≥10.8 |
≥1990 |
≥25 |
263-287 |
33-36 |
180 |
| N38UH |
1.22-1.25 |
12.2-12.5 |
≥876 |
≥11 |
≥1990 |
≥25 |
287-310 |
36-39 |
180 |
| N40UH |
1.25-1.28 |
12.5-12.8 |
≥899 |
≥11.3 |
≥1990 |
≥25 |
302-326 |
38-41 |
180 |
| N42UH |
1.28-1.32 |
12.8-13.2 |
≥899 |
≥11.3 |
≥1990 |
≥25 |
318-342 |
40-43 |
180 |
| N28EH |
1.04-1.08 |
10.4-10.8 |
≥780 |
≥9.8 |
≥2388 |
≥30 |
207-231 |
26-29 |
200 |
| N30EH |
1.08-1.13 |
10.8-11.3 |
≥812 |
≥10.2 |
≥2388 |
≥30 |
223-247 |
28-31 |
200 |
| N33EH |
1.13-1.17 |
11.3-11.7 |
≥836 |
≥10.5 |
≥2388 |
≥30 |
247-271 |
31-34 |
200 |
| N35EH |
1.17-1.22 |
11.7-12.2 |
≥876 |
≥11 |
≥2388 |
≥30 |
263-287 |
33-36 |
200 |
| N38EH |
1.22-1.25 |
12.2-12.5 |
≥899 |
≥11.3 |
≥2388 |
≥30 |
287-310 |
36-39 |
200 |
| N40EH |
1.25-1.28 |
12.5-12.8 |
≥899 |
≥11.3 |
≥2388 |
≥30 |
302-326 |
38-41 |
200 |
| N28AH |
1.04-1.08 |
10.4-10.8 |
≥787 |
≥9.9 |
≥2624 |
≥33 |
207-231 |
26-29 |
230 |
| N30AH |
1.08-1.13 |
10.8-11.3 |
≥819 |
≥10.3 |
≥2624 |
≥33 |
223-247 |
28-31 |
230 |
| N33AH |
1.13-1.17 |
11.3-11.7 |
≥843 |
≥10.6 |
≥2624 |
≥33 |
247-271 |
31-34 |
230 |
| N35AH |
1.17-1.22 |
11.7-12.2 |
≥876 |
≥11 |
≥2624 |
≥33 |
263-287 |
33-36 |
230 |
| N38AH |
1.22-1.25 |
12.2-12.5 |
≥899 |
≥11.3 |
≥2624 |
≥33 |
287-310 |
36-39 |
230 |
3.Manufacturing Process of Sintered Neodymium Magnet
4. Magnetization Direction Of Arc Magnet
5. Machining Process of Neodymium Countersunk Magnet
Besides large-sized product with regular shapes, sintered Neodymium magnet is hard to achieve the required shape and dimensions directly owing to the technical restrictions in the magnetic field orientation molding process, therefore, machining process of sintered Neodymium magnet blank is always inevitable, especially Neodymium countersunk magnet. As a type of hard and brittle cermet material, sintered Neodymium magnet is criticized by its machinability, hence there are only cutting, grinding, and drilling can be applied to its machining process in traditional machining technology. Hole Machining process includes both through hole and countersunk hole. Countersunk hole should be processed on the basis of through hole. In order to ensure concentricity between through hole and the countersunk hole, workpiece is required to be fixed accurately during the machining process of the countersunk hole.
FAQ
1: How long will you give me the reply?
We will contact you in 12 hours as soon as we can.
2: Could I get samples?
Yes, we have materials in stock to help you to get the samples as soon as we can.
3: How about the quality of the magnets?
We have the certification of ISO, TS and ROSH, we could send the certification test of our company to you.
4: How is the price?
As we believe the quality is the most important, we will provide the best quality magnet we can with reasonable price.
5: Could you provide me the shortest lead time?
We have materials in our stock, if you really need, you can tell us and we will try our best to satisfy you.
6: Could I visit your factory?
Of course, if you need we will help you to visit our factory.
7: If I have paid, when will you help me to produce?
When we have received the money in our account, we will give you the receipt and arrange to produce immediately.
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