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NdFeB Sintered Magnet Radial Ring For BLDC Motor

The Sintered Neomagnet has high remanence, high coercive force, widely used in DC motor , brushless motor, stepping motor , Radial neodymium Iron Boron Multipole Magnet Ring with Specification OD 9.9* ID5*H15mm , Grade 35SH

  • NdFeB Sintered Magnet
  • SPN
  • 8505111000
Quantity:

I. Sintered NdFeB Magnets
 
Neodymium magnet is mainly made of Neodymium, Iron and Boron. Neodymium magnet is offered in range of operation tem 80℃ to 220℃. A sintered NdFeB 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,  sensors and others.
 
II. Surface Treatment 


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.
 
With a mature manufacturing process, strict quality assurance, complete technical service and superior price performance.
  
III. Sintered NdFeB Technical Process:
 
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IV:Physical properties of sintered NdFeB
 

Type parameter
 
parameter values
 
Auxiliary magnetic property
 
 
(α(Br))/(%/K)Temperature Coefficient of residual induction
 
-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

 

V: Magnetic properties of sintered NdFeB

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
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 45~49 150
26 35UH 1.17~1.22 11.7~12.2 1990 25 860 10.8 263~287 33~36 180
27 38UH 1.22~1.27 12.2~12.7 1990 25 876 11 287~310 36~39 180
28 40UH 1.26~1.30 12.6~13.0 1911 24 915 11.5 302~326 38~41 180
29 42UH 1.30~1.35 13.0~13.5 1911 24 971 12.2 310~342 39~43 180
30 30EH 1.08~1.14 10.8~11.4 2388 30 812 10.2 223~254 28~32 200
31 33EH 1.13~1.18 11.3~11.8 2388 30 820 10.3 247~270 31~34 200
33 35EH 1.17~1.22 11.7~12.2 2388 30 836 10.5 263~287 33~36 200
34 38EH 1.22~1.27 12.2~12.7 2388 30 915 11.5 279~310 35~39 200

 

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