Motor Magnets
Motor Magnets Classification
According to different application , Motor Magnets include the following shape:Block , Ring , Arc, Disc and Rhombic.
According to different raw materials , there are Ferrite Motor magnets,SmCo Motor Magnets and NdFeB Motor Magnets.
NdFeB motor magnets have features of low temperature coefficient and low weight loss. Samarium motor magnets have better corrosion resistant and can working more stable on high temperature. Ferrite materials is cheapest, but always need big tool charge for new samples.
Rare earth segment magnet,arc magnets,motor magnets are mainly used for various motors, generators, such as Elevator Motors (Traction Machines), Wind Turbines, Servo Motors, Motors for Hybrid Electric Vehicle or Battery Electric Vehicles, Linear motors and Compressor Motors, drive motor for ship, etc.

The features of Sintered NdFeB motor magnets from Mag Spring:
1. High working temperature and thermostability base on high coercive force, the max coercivity of mag spring's AH grade NdFeB magnets (Hcj) ≥35kOe;
2. Low temperature coefficient: reversible Temperature Coefficients aBr<-0.1%℃-1,bHcj<-0.45%℃-1;
3. Superior Corrosion Resistance: The weight loss ≤1.0mg/cm2 in HAST (125℃, 0.26Mpa, 95%RH, 20days);
4. Superior anti-corrosion technology: Aluminum composite coating can withstand more than 500 hours under NSS test. Teflon coating can withstand more than 500hours under Neutral salt spray test.
5. High uniformity :magnetic flux can be within +/-0.25% if need;
6. Large size products: Magnet block's dimensions larger than 200mm×150mm×80mm can be produced
7. custom made available
The features of Sintered SmCo motor magnets from Mag Spring:
1. Highest properties in China , Br>1.15T , (BH) max>=32MGOes
2. Better corrosion resistant than Ndfeb magnets
3. Better working stability than NdFeB magnets in high temperature.
4. Custom made available

The Following is NdFeB magnets propertries:
roperties |
Remanence |
Coercive force |
Intrinsic coercive force |
Maximum energy product |
Working temp |
|||||||||||||
Unit |
kGs |
T |
kOe |
kA/m |
MGOe |
kJ/m3 |
||||||||||||
Nom. |
Min. |
Nom. |
Min. |
Nom. |
Min. |
Nom. |
Min. |
Nom. |
Min. |
Nom. |
Min. |
|||||||
No
|
Grade
|
kOe
|
kA/m
|
℃ |
||||||||||||||
1 |
N30 |
11.2 |
10.8 |
1.12 |
1.08 |
10.5 |
10.0 |
836 |
796 |
≥12 |
≥955 |
30 |
28 |
239 |
223 |
≤80 |
||
2 |
N35 |
12.0 |
11.7 |
1.20 |
1.17 |
11.3 |
10.8 |
900 |
860 |
≥12 |
≥955 |
35 |
33 |
279 |
263 |
≤80 |
||
3 |
N38 |
12.6 |
12.2 |
1.26 |
1.22 |
11.5 |
11.3 |
915 |
900 |
≥12 |
≥955 |
38 |
36 |
303 |
287 |
≤80 |
||
4 |
N40 |
12.9 |
12.6 |
1.29 |
1.26 |
11.6 |
11.4 |
924 |
908 |
≥12 |
≥955 |
40 |
38 |
318 |
303 |
≤80 |
||
5 |
N42 |
13.1 |
12.9 |
1.31 |
1.29 |
11.8 |
11.5 |
939 |
915 |
≥12 |
≥955 |
42 |
40 |
342 |
326 |
≤80 |
||
6 |
N45 |
13.6 |
13.3 |
1.36 |
1.33 |
12.0 |
11.6 |
955 |
924 |
≥12 |
≥955 |
45 |
43 |
358 |
342 |
≤80 |
||
7 |
N48 |
14.0 |
13.8 |
1.40 |
1.38 |
10.8 |
10.2 |
860 |
810 |
≥11 |
≥875 |
48 |
46 |
383 |
367 |
≤80 |
||
8 |
N50 |
14.3 |
14.1 |
1.43 |
1.41 |
10.8 |
10.0 |
860 |
794 |
≥11 |
≥875 |
50 |
48 |
398 |
383 |
≤80 |
||
9 |
N52 |
14.5 |
14.2 |
1.45 |
1.42 |
10.8 |
10.0 |
860 |
794 |
≥11 |
≥875 |
52 |
50 |
414 |
398 |
≤60 |
||
10 |
N30M |
11.2 |
10.8 |
1.12 |
1.08 |
10.5 |
10.0 |
836 |
794 |
≥14 |
≥1114 |
30 |
28 |
239 |
223 |
≤100 |
||
11 |
N35M |
12.0 |
11.7 |
1.20 |
1.17 |
11.3 |
10.9 |
900 |
868 |
≥14 |
≥1114 |
35 |
33 |
279 |
263 |
≤100 |
||
12 |
N38M |
12.6 |
12.2 |
1.26 |
1.22 |
11.8 |
11.3 |
939 |
900 |
≥14 |
≥1114 |
38 |
36 |
303 |
287 |
≤100 |
||
13 |
N40M |
12.9 |
12.6 |
1.29 |
1.26 |
12.0 |
11.6 |
955 |
924 |
≥14 |
≥1114 |
40 |
38 |
318 |
303 |
≤100 |
||
14 |
N42M |
13.2 |
12.9 |
1.32 |
1.29 |
12.4 |
12.0 |
987 |
955 |
≥14 |
≥1114 |
42 |
40 |
342 |
326 |
≤100 |
||
15 |
N45M |
13.5 |
13.3 |
1.35 |
1.33 |
12.6 |
12.2 |
1003 |
971 |
≥14 |
≥1114 |
45 |
43 |
358 |
342 |
≤100 |
||
16 |
N48M |
14.0 |
13.8 |
1.40 |
1.38 |
13.3 |
12.9 |
1059 |
1027 |
≥14 |
≥1114 |
48 |
46 |
383 |
367 |
≤100 |
||
17 |
N50M |
14.3 |
14.0 |
1.43 |
1.40 |
13.5 |
13.1 |
1074 |
1042 |
≥14 |
≥1114 |
50 |
48 |
398 |
383 |
≤100 |
||
18 |
N52M |
14.5 |
14.2 |
1.45 |
1.42 |
13.6 |
13.2 |
1082 |
1050 |
≥14 |
≥1114 |
52 |
50 |
414 |
398 |
≤80 |
||
19 |
N30H |
11.2 |
10.8 |
1.12 |
1.08 |
10.5 |
10.0 |
836 |
794 |
≥17 |
≥1353 |
30 |
28 |
239 |
223 |
≤120 |
||
20 |
N33H |
11.7 |
11.4 |
1.17 |
1.14 |
11.0 |
10.5 |
876 |
836 |
≥17 |
≥1353 |
33 |
31 |
263 |
247 |
≤120 |
||
21 |
N35H |
12.0 |
11.7 |
1.20 |
1.17 |
11.3 |
10.9 |
900 |
868 |
≥17 |
≥1353 |
35 |
33 |
279 |
263 |
≤120 |
||
22 |
N38H |
12.6 |
12.2 |
1.26 |
1.22 |
11.8 |
11.3 |
939 |
900 |
≥17 |
≥1353 |
38 |
36 |
303 |
287 |
≤120 |
||
23 |
N40H |
12.8 |
12.6 |
1.28 |
1.26 |
12.0 |
11.6 |
955 |
924 |
≥17 |
≥1353 |
40 |
38 |
318 |
303 |
≤120 |
||
24 |
N42H |
13.0 |
12.8 |
1.30 |
1.28 |
12.4 |
12.0 |
987 |
955 |
≥17 |
≥1353 |
42 |
40 |
342 |
326 |
≤120 |
||
25 |
N45H |
13.5 |
13.3 |
1.35 |
1.33 |
12.6 |
12.2 |
1003 |
971 |
≥17 |
≥1353 |
45 |
43 |
358 |
342 |
≤120 |
||
26 |
N48H |
14.0 |
13.8 |
1.40 |
1.38 |
13.3 |
12.9 |
1059 |
1027 |
≥17 |
≥1353 |
48 |
46 |
383 |
367 |
≤120 |
||
27 |
N50H |
14.3 |
14.0 |
1.43 |
1.40 |
13.5 |
13.1 |
1074 |
1042 |
≥17 |
≥1353 |
50 |
48 |
398 |
383 |
≤100 |
||
28 |
N52H |
14.5 |
14.2 |
1.45 |
1.42 |
13.6 |
13.2 |
1082 |
1050 |
≥17 |
≥1353 |
52 |
50 |
414 |
398 |
≤100 |
||
29 |
N30SH |
11.2 |
10.8 |
1.12 |
1.08 |
10.5 |
10.1 |
836 |
804 |
≥20 |
≥1595 |
30 |
28 |
239 |
223 |
≤150 |
||
30 |
N33SH |
11.7 |
11.4 |
1.17 |
1.14 |
11.0 |
10.6 |
876 |
844 |
≥20 |
≥1595 |
33 |
31 |
263 |
247 |
≤150 |
||
31 |
N35SH |
12.0 |
11.7 |
1.20 |
1.17 |
11.3 |
11.0 |
900 |
876 |
≥20 |
≥1595 |
35 |
33 |
279 |
263 |
≤150 |
||
32 |
N37SH |
12.3 |
12.0 |
1.23 |
1.20 |
11.5 |
11.3 |
915 |
900 |
≥20 |
≥1595 |
37 |
35 |
295 |
279 |
≤150 |
||
33 |
N38SH |
12.5 |
12.2 |
1.25 |
1.22 |
11.8 |
11.4 |
939 |
908 |
≥20 |
≥1595 |
38 |
36 |
303 |
287 |
≤150 |
||
34 |
N40SH |
12.7 |
12.5 |
1.27 |
1.25 |
12.1 |
11.8 |
963 |
939 |
≥20 |
≥1595 |
40 |
38 |
318 |
303 |
≤150 |
||
35 |
N42SH |
13.0 |
12.8 |
1.30 |
1.28 |
12.4 |
12.0 |
987 |
955 |
≥20 |
≥1595 |
42 |
40 |
342 |
326 |
≤150 |
||
36 |
N45SH |
13.5 |
13.3 |
1.35 |
1.33 |
12.6 |
12.2 |
1003 |
971 |
≥20 |
≥1595 |
45 |
43 |
358 |
342 |
≤150 |
||
37 |
N48SH |
14.0 |
13.8 |
1.40 |
1.38 |
13.3 |
12.9 |
1059 |
1027 |
≥20 |
≥1595 |
48 |
46 |
383 |
367 |
≤130 |
||
38 |
N25UH |
10.0 |
9.6 |
1.00 |
0.96 |
9.6 |
9.2 |
764 |
732 |
≥25 |
≥1990 |
25 |
22 |
199 |
175 |
≤180 |
||
39 |
N28UH |
10.8 |
10.4 |
1.08 |
1.04 |
10.2 |
9.8 |
812 |
780 |
≥25 |
≥1990 |
28 |
26 |
223 |
207 |
≤180 |
||
40 |
N30UH |
11.2 |
10.8 |
1.12 |
1.08 |
10.6 |
10.1 |
844 |
804 |
≥25 |
≥1990 |
30 |
28 |
239 |
223 |
≤180 |
||
41 |
N33UH |
11.5 |
11.3 |
1.15 |
1.13 |
11.0 |
10.6 |
876 |
844 |
≥25 |
≥1990 |
33 |
31 |
263 |
247 |
≤180 |
||
42 |
N35UH |
11.9 |
11.7 |
1.19 |
1.17 |
11.3 |
11.0 |
900 |
876 |
≥25 |
≥1990 |
35 |
33 |
279 |
263 |
≤180 |
||
43 |
N38UH |
12.5 |
12.2 |
1.25 |
1.22 |
11.8 |
11.4 |
939 |
908 |
≥25 |
≥1990 |
38 |
36 |
303 |
287 |
≤180 |
||
44 |
N40UH |
12.7 |
12.5 |
1.27 |
1.25 |
12.2 |
11.8 |
971 |
939 |
≥25 |
≥1990 |
40 |
38 |
318 |
303 |
≤180 |
||
45 |
N42UH |
13.0 |
12.8 |
1.30 |
1.28 |
12.4 |
12.0 |
987 |
955 |
≥25 |
≥1990 |
42 |
40 |
342 |
326 |
≤180 |
||
46 |
N45UH |
13.5 |
13.3 |
1.35 |
1.33 |
12.6 |
12.2 |
1003 |
971 |
≥25 |
≥1990 |
45 |
43 |
358 |
342 |
≤180 |
||
47 |
N28EH |
10.8 |
10.4 |
1.08 |
1.04 |
10.4 |
9.8 |
811 |
780 |
≥30 |
≥2388 |
28 |
26 |
223 |
207 |
≤200 |
||
48 |
N30EH |
11.2 |
10.8 |
1.12 |
1.08 |
10.6 |
10.1 |
844 |
804 |
≥30 |
≥2388 |
30 |
28 |
239 |
223 |
≤200 |
||
49 |
N33EH |
11.5 |
11.3 |
1.15 |
1.13 |
11.0 |
10.6 |
876 |
844 |
≥30 |
≥2388 |
33 |
31 |
263 |
247 |
≤200 |
||
50 |
N35EH |
11.9 |
11.7 |
1.19 |
1.17 |
11.3 |
11.0 |
900 |
876 |
≥30 |
≥2388 |
35 |
33 |
279 |
263 |
≤200 |
||
51 |
N38EH |
12.4 |
12.2 |
1.24 |
1.22 |
11.8 |
11.4 |
939 |
908 |
≥30 |
≥2388 |
38 |
36 |
303 |
287 |
≤200 |
||
52 |
N40EH |
12.7 |
12.4 |
1.27 |
1.24 |
12.2 |
11.8 |
971 |
939 |
≥30 |
≥2388 |
40 |
38 |
318 |
303 |
≤200 |
||
53 |
N28AH |
10.8 |
10.4 |
1.08 |
1.04 |
10.4 |
9.8 |
811 |
780 |
≥33 |
≥2626 |
28 |
26 |
223 |
207 |
≤220 |
||
54 |
N30AH |
11.2 |
10.8 |
1.12 |
1.08 |
10.6 |
10.1 |
844 |
804 |
≥33 |
≥2626 |
30 |
28 |
239 |
223 |
≤220 |
||
55 |
N33AH |
11.5 |
11.3 |
1.15 |
1.13 |
11.0 |
10.6 |
876 |
844 |
≥33 |
≥2626 |
33 |
31 |
263 |
247 |
≤220 |
||
56 |
N35AH |
11.9 |
11.7 |
1.19 |
1.17 |
11.5 |
11.0 |
915 |
876 |
≥33 |
≥2626 |
35 |
33 |
279 |
263 |
≤220 |
||
57 |
N38AH |
12.4 |
12.2 |
1.24 |
1.22 |
11.8 |
11.4 |
939 |
908 |
≥33 |
≥2626 |
37 |
35 |
294 |
279 |
≤220 |
||
58 |
N40AH |
12.7 |
12.4 |
1.27 |
1.24 |
12.1 |
11.8 |
971 |
939 |
≥33 |
≥2626 |
39 |
37 |
310 |
294 |
≤220 |
The Following is smco magnets propertries:
Material Grade | Residual Fulx | Coercive Force | Intrinsic Coercive Force | Max. Energy Product | ||||||
Br | Hcb | Hcj | (BH)max | |||||||
KGs | T | KOe | KA/m | KOe | KA/m | MGOe | KJ/m3 | |||
SmCO5 | SM-16A | 8.0-9.0 | 0.80-0.90 | 7.7-8.8 | 613-700 | 18.0-30.0 | 1430-2388 | 16±2 | 127±16 | |
SM-18A | 8.4-9.7 | 0.84-0.97 | 8.2-9.4 | 653-748 | 15.0-22.0 | 1194-1751 | 18±2 | 143±16 | ||
Sm2Co17 | SM-24A | 10.0-10.6 | 1.00-1.06 | 8.0-9.5 | 637-756 | 20.0-28.0 | 1592-2229 | 24±2 | 191±16 | |
SM-24B | 10.0-10.6 | 1.00-1.06 | 6.2-8.0 | 494-637 | 7.0-11.0 | 557-876 | 24±2 | 191±16 | ||
SM-26A | 10.2-10.8 | 1.02-1.08 | 8.5-10.2 | 677-812 | 20.0-28.0 | 1592-2229 | 26±2 | 207±16 | ||
SM-26B | 10.2-10.8 | 1.02-1.08 | 8.0-9.5 | 637-756 | 9.0-18.0 | 717-1433 | 26±2 | 207±16 | ||
SM-28A | 10.5-11.0 | 1.05-1.10 | 8.5-10.3 | 677-812 | 20.0-28.0 | 1592-2229 | 28±2 | 223±16 | ||
SM-30A | 10.7-11.5 | 1.07-1.15 | 8.5-10.5 | 677-836 | 20.0-28.0 | 1592-2229 | 29±2 | 231±16 | ||
SM-30B | 10.7-11.5 | 1.07-1.15 | 7.5-9.5 | 597-756 | 9.0-18.0 | 717-1433 | 29±2 | 231±16 | ||
SM-32A | 11.0-12.0 | 1.10-1.20 | 9.5-10.5 | 756-836 | 20.0-28.0 | 1592-2229 | 30±2 | 239±16 | ||
SM-32B | 11.0-12.0 | 1.10-1.20 | 7.0-9.5 | 557-756 | 8.5-15.0 | 677-1195 | 30±2 | 239±16 |
Neodymium Segment Magnets Segment or Arc Shape
SmCo Arc Magnets All kind of SmCo Arc Magnet made from Sm2co17 Magnets and SmCo5 Magnets in Mag Spring.High properties and affordable pri…
Step Motor Magnets
Neodymium Motor Magnets
Neodymium Arc Magnets
SmCo Ring Magnets The maxmium diameter of these Samarium Cobalt Ring Magnets can up to 120mm.
N38UH magnets Sintered NdFeB magnets:N38UH, N40UH,N42UH N45UH, the special grade supper magnets for motor using. And Demagnetization C…
Laminated magnet Laminated magnet made of several individual permanent rare earth magnets bonded to each other insulated glue, which are…
High temp neodymium magnets high temperature neodymium magnets with grade SH (120-150 ℃), UH (150-180 ℃), EH (180-200 ℃), AH (200-220 ℃), RH (220-…
N42UH Magnet N35UH,N38UH,N40UH, N42UH MAGNETS are very popular grades used in different kind of motors with max working more than 150…
high temperture magnets This high temp magnet are also named UHT SmCo magnets, which are unltimate choice for Rotors,Electic Motors,Generators,C…
Sm2Co17 Magnet Smco5 and Sm2co17 Magnets SmCo Magnets with (BH)max>32MGOe from professional exporter- Mag Spring. Various shape,dimens…
Permanent Magnets For Motor Magnets
Customers want to buy electric motors that are small, long-lasting, and inexpensive. Today, if you want to buy electric motors that meet these needs, you'll probably choose to buy neodymium motor magnets. So, technology has gotten so much better that smaller motors with ferrite magnets work just as well as bigger motors with ferrite magnets.
Thanks to progress in magnetism, motor magnets have become better. Electric motor magnets and the ever-growing market for drones are two examples of industries that are pushing the limits of neodymium motor magnets' efficiency and size. As we all know, motors are one of the most important things that use a magnet and electricity to work.
Permanent Magnet Rotor
On the rotor of the most common type of motor, which is made of neodymium-boron-iron, samarium-cobalt, or ferrite, there is a permanent magnet. There are two ways to put permanent magnets in place: The magnets are stuck to the surface of the rotor core with glue so that the magnetic field goes across the air gap inside the body in a radial direction.
The magnets can also be set into the surface of the rotor core or put in slots just below the surface. Hence rotor rotates with great power.
Since they are made of rare earth elements, neodymium iron boron magnets are also called Neodymium-Iron-Boron or NdFeB or NIB super strong magnets. Permanent magnet rotor magnets are very strong for how small they are, and they look like metal.
Key Attributes of a Magnet to Think About
If you want the best magnet at an affordable price, look no further than Mag Spring. We can also recommend the best magnet for you based on your needs. On the other hand, here are the most important things to look for:
Remanence:
It is a measure of how strong a material's magnetism is.
Energy Product:
The most magnetic energy that can be made at top performance
Intrinsic Coercivity:
It is a measure of how resistant a material is to losing its magnetism at its highest temperature.
Curie Temperature:
The temperature above which magnetic materials lose their ferromagnetic properties.
Permanent Magnet DC Motor or PMDC Motor
Some of the strongest permanent magnets on Earth are made of neodymium. Even though they don't exist in nature, they can be made in a lab by mixing neodymium, iron, and boron in a liquid slurry, which is then cooled and molded. Because of how strong their attraction is, they are often used in motors, generators, and vehicles that float. These are called permanent magnet dc pmdc.
These DC motors are fast, and most appliances that need speed use them. Due to this, they are used in, bigger machines, toys, cars, and other applications. We provide best magnet dc pmdc motor for personal or commercial use.
Arc Magnets For Motors
Permanent magnets most often come in the shape of an arc, and Mag Spring arc magnets are made to take advantage of this shape. Permanent magnet motors, generators, torque couplings, pumps, magnetic bearings, Halbach, etc. often use these magnets. DC motors like this are great for battery-powered toys like model trains, radio-controlled cars, and electric shavers, but you don't find them in many home appliances.
Neodymium magnets are often used in motors work. Due to their strong magnetic force.
Tesla Motor Magnets
So you might be thinking about buying a Tesla motor, or how does it work? Permanent magnet motors are used in the Tesla Model 3 to save energy and make the battery last longer. If we talk about model s and model 3 they have come with advanced motor magnets to give maximum output. Its strength comes from the neodymium magnets that are built into it.
These electric vehicles like Tesla's advances in technology, they've been able to make their motors run like no others. Which you can see in the strength of their magnet.
On the other hand, the motor controller, controls the speed of motor while keeping the power maximum. Our store is the only place to buy these motor magnets for sale. If you want to buy motor magnets in bulk, we can help you with both business and personal needs.
Wholesale Motor Magnets
Mag Spring is the place to go if you want to buy all kinds of AC and DC motors in bulk quantity. We have all kinds of magnets, including arc magnets for motors, permanent magnet DC motors, brushless DC motors, electric motor magnets, and much more.
We'll take any order, whether it's for personal or business use. We also make custom magnets and only sell the strongest motor magnets in the world. If you want to look through our catalog, you can shop now for our products and other exciting new magnets.
Brushless DC Motor Permanent Magnet
Electric motors without brushes and commutators are called Brushless DC Motor Permanent Magnet. Instead, they use electronic circuits to control the flow of electricity through windings on a rotating armature. The main benefit of Brushless DC Motor Permanent Magnet over brushed DC motors is that it is more reliable and works better.
Brushless DC Motor Permanent Magnet technology is quickly becoming the best choice for applications that need a lot of power, like industrial machinery and electric cars. By not having bldc motor, brushes or other moving parts, brushless motors have less friction and wear on the motor itself.
They are also more efficient because they produce less heat. Simply put, brushed motors are less powerful, less efficient, and less reliable than Brushless DC Motor Permanent Magnet motors. These motors are used for specialized purpose to provide better performance and speed.
Motor Magnets For Sale
At Mag Spring, we have great deals for all of our customers, whether they are new to us or have been here before. All of the motor magnets are on sale for a huge percentage off. This means that you will pay less than the wholesale price.
Also, we are happy to take orders from both businesses and individuals. Additionally, Mag Spring has added 20 or more categories of magnets that you couldn't find in the wholesale market. Our marketplace has more than 100 items, so we have a magnet design for every possible use.
You can get a motor magnet or any other kind of magnet you need made to order. We are your magnetic source. Now, you can have the custom motor magnets, our wholesale motor magnets, or the most recent one sent to you right away.
Product Category
- Permanent Magnet
- Magnetic Separator
- Magnetic liquid trap
- Self cleaning grate magnets
- Overband Magnetic Separator
- Magnetic Pulley
- Magnetic Drum
- Chute Magnet
- Hump Magnet
- Magnetic Plate
- Magnetic Tube
- Drawer Magnet
- Rotary Grate Magnet
- Bullet Magnet
- Magnetic Grid
- Dry Magnetic Separator
- Eddy Current Separator
- Magnetic Coolant Separator
- Wet Magnetic Separator
- Pot Magnets
- Magnetic Assembly
- Magnetic tool
- Magnetic Measurement
- Metal Detector
- X-Ray Inspection System
- Checkweighter System
- Vibrating Screen
- Shuttering magnets for precast concrete industrial