Strong Neodymium/NdFeB Magnet/ Sintered Rings Process for BLDC Motor

Model NO.: Neodymium Magnet
Type: Permanent
Export Markets: Global
Processing Technical: Sintered
Export: Shanghai
Trademark: SPN
Transport Package: Wooden or as Per Requirement
Specification: Customized
Origin: Hangzhou Zhejiang China
HS Code: 8505111000
I. Anisotropic sintered Neodymium multipole rings 
Neodymium magnet is mainly made of Neodymium, Iron and Boron. Neodymium magnet is offered in range of operation tem 80ºC to 220ºC. A sintered Neo magnet has high remanence, high coercive force, and is easily formed into various sizes and shapes. The magnet is suitable for being used in DC Motor, Brushless motor , Speaker, MRI  and others.
 
II. Features : 
Since NdFeB magnets easily corrode, it is often coated to protect against this. Traditional coatings are Nickel, Zinc, and Epoxy with other options available. Selection of a coating should be discussed early on in the design and application process. Sintered  NdFeb canbe made in Arc, cylinder,ring and some irregular shape.
 
Type NdFeB magnet.
Shape Professional in manufacturing ring magnet, arc/tile cylindrical and other shaped can be customized
Size As per customer's requirements.
Application Widely used in brushless DC motor,motor assemblies,
Wind generator,Magnetic separators, servo motor, DC motor
Grade All kind of grade with N35 - N52, 35M - 50M, 35H - 48H, 30SH - 45SH, 28UH - 40UH, 30EH - 35EH, 30AH - 33AH.
Material Rare earth Neodymium iron boron magnet

III. Neodymium sintered anisotropic multipole magnet rings : 


Strong Neodymium/NdFeB Magnet/ Sintered Rings Process for BLDC Motor



IV: Anisotropic NdFeB Specification: 
Strong Neodymium/NdFeB Magnet/ Sintered Rings Process for BLDC Motor





V: Physical properties of sintered NdFeB
 
Type parameter
 		 parameter values
 
Auxiliary magnetic property
 		 Temperature Coefficient of residual induction (α(Br))/(%/K) -0.08~-0.12
Intrinsic coercivity temperature coefficient  (α(Hcj)/%/K) -0.42~-0.70
Curie temperature (Tc)/K 310~380
Recovery permeability   (μrec) [ - ] 1.05
Mechanical physical properties
 		 density /(g/cm3) 7.50~7.70
Dimension hardness   (Hv) 650
Resistivity  /(μΩ•m) 1.4
Compressive strength  /MPa 1050
Tensile strength     /MPa 80
Bending strength 290
Thermal conductivity /(W/(m•K) ) 6~8
Young modulus /GPa 160
Coefficient of thermal expansion
(Perpendicular to orientation)/(10-6/K)		 -1.5
Coefficient of thermal expansion
(Parallel to orientation )/(10-6/K)		 6.5

VI: Sintered Neodymium magnet properties 
                           Magnetic properties of sintered NdFeB                   
 No.  Grade  Residual induction (Br)  Intrinsic coercivity (Hcj) Induction coercivity (Hcb) Energy Product (BH)max Maximum operating temperature
T kGs kA/m kOe kA/m kOe kJ/m3 MGOe ºC
1 N35 1.17~1.22 11.7~12.2 955 12 868 10.9 263~287 33~36 80
2 N38 1.22~1.27 12.2~12.7 955 12 899 11.3 287~310 36~39 80
3 N40 1.25~1.30 12.5~13.0 955 12 923 11.6 302~326 38~41 80
4 N42 1.28~1.34 12.8~13.4 955 12 923 11.6 318~342 40~43 80
5 N45 1.33~1.38 13.3~13.8 955 12 876 11 342~366 43~46 80
6 N48 1.37~1.43 13.7~14.3 955 12 892 11.2 366~390 46~49 80
7 35M 1.17~1.22 11.7~12.2 1114 14 868 10.9 263~287 33~36 100
8 38M 1.22~1.27 12.2~12.7 1114 14 899 11.3 287~310 36~39 100
9 45M 1.33~1.38 13.3~13.8 1114 14 995 12.5 342~366 43~46 100
10 48M 1.37~1.43 13.7~14.3 1114 14 1019 12.8 358~390 46~49 100
11 50M 1.39~1.45 13.9~14.5 1114 13 1035 13 374~406 47~51 100
12 33H 1.13~1.18 11.3~11.8 1353 17 836 10.5 247~270 31~34 120
13 35H 1.17~1.22 11.7~12.2 1353 17 868 10.9 263~287 33~36 120
14 38H 1.22~1.27 12.2~12.7 1353 17 899 11.3 287~310 36~39 120
15 40H 1.25~1.30 12.5~13.0 1353 17 923 11.6 302~326 38~41 120
16 42H 1.28~1.34 12.8~13.4 1353 17 955 12 318~342 40~43 120
17 45H 1.33~1.38 13.1~13.8 1353 17 963 12.1 334~358 43~46 120
18 48H 1.37~1.43 13.7~14.3 1353 16 971 12.2 342~366 45~49 120
19 33SH 1.13~1.18 11.3~11.8 1592 20 844 10.6 247~270 31~34 150
20 35SH 1.17~1.22 11.7~12.2 1592 20 876 11 263~287 33~36 150
21 38SH 1.22~1.27 12.2~12.7 1592 20 907 11.4 287~310 36~39 150
22 40SH 1.25~1.30 12.5~13.0 1592 20 939 11.8 302~326 38~41 150
23 42SH 1.28~1.34 12.8~13.4 1592 20 971 12.2 318~342 40~43 150
24 45SH 1.32~1.38 13.2~13.8 1592 19 995 12.3 342~366 43~46 150
25 48SH 1.36~1.42 13.6~14.2 1512 19 995 12.5 358~390 Temporary Fence

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