Gold Member Since 2015
Audited Supplier
Zhuzhou Summit New Material Co., Ltd.

NdFeB, Magnet, Neodymium Magnet manufacturer / supplier in China, offering Ring Neodymium Magnets for Loudspeaker, Block Neodymium Magnet with Parylene Coating, Loudspeaker Driver of Neodymium Magnet and so on.

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Supplier Homepage Product Others Ring Neodymium Magnets for Loudspeaker

Ring Neodymium Magnets for Loudspeaker

FOB Price: US $12 / Piece
Min. Order: 10 Pieces
Min. Order FOB Price
10 Pieces US $12/ Piece
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Production Capacity: 5000t/a
Transport Package: Box
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: RIng magnet of OD100 OD110 OD120 OD150 OD160
  • Shape: Ring
  • Grade: N52
  • Ring Magnet: N45h
  • Specification: OD100---OD200 N45SH
  • HS Code: 85051100
  • Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
  • Coating: Nickel
  • Strong Magnet: Any Dimension
  • Trademark: SUMMIT
  • Origin: China
Product Description

Sintered NdFeB magnets are the most powerful commercialized permanent magnets available today, with maximum energy product ranging from 26 MGOe to 52 MGOe. Nd-Fe-B is the third generation of permanent magnet developed in the 1980s. It has a combination of very high remanence and coercivity, and comes with a wide range of grades, sizes and shapes. With its excellent magnetic characteristics, abundant raw material and relatively low prices, Nd-Fe-B offers more flexibility in designing of new or replace the traditional magnet materials such as ceramic, Alnico and Sm-Co to achieve high efficiency, low cost and more compact devices.
Advantages of sintered Magnet
*Extreme strong Br Resident induction. 
*Excellent demagnetization resistance capability. 
*Good Price relative to its high magnetic properties.
Magnetic Properties of Sintered NdFeB Magnets

Grade

Max. Energy Product

Remanence

Coercive Force

Rev. Temp. Coeff.

Curie Temp.

Working Temp.

(BH)max

Br

Hc

Hci

Bd

Hd

Tc

Tw

MGOe

kJ/m3

kG

mT

kOe

kA/m

kOe

kA/m

%/°C

%/°C

°C

°C

N33

31-33

247-263

11.30-11.70

1130-1170

>10.5

>836

>12

>955

-0.12

-0.60

310

80

N35

33-36

263-287

11.70-12.10

1170-1210

>10.9

>868

>12

>955

-0.12

-0.60

310

80

N38

36-39

287-310

12.10-12.50

1210-1250

>11.3

>899

>12

>955

-0.12

-0.60

310

80

N40

38-41

302-326

12.50-12.80

1250-1280

>11.6

>923

>12

>955

-0.12

-0.60

310

80

N42

40-43

318-342

12.80-1320

1280-1320

>11.6

>923

>12

>955

-0.12

-0.60

310

80

N45

43-46

342-366

13.20-13.80

1320-1380

>11.0

>876

>12

>955

-0.12

-0.60

310

80

N48

46-49

366-390

13.80-14.20

1380-1420

>10.5

>835

>11

>876

-0.12

-0.60

310

80

N30M

28-32

223-255

10.90-11.70

1090-1170

>10.2

>812

>14

>1114

-0.12

-0.59

320

100

N33M

31-35

247-279

11.40-12.20

1140-1220

>10.7

>851

>14

>1114

-0.12

-0.59

320

100

N35M

33-37

263-294

11.80-12.50

1180-1250

>11.0

>875

>14

>1114

-0.12

-0.59

320

100

N38M

36-40

286-318

12.30-13.00

1230-1300

>11.5

>915

>14

>1114

-0.12

-0.59

320

100

N40M

38-42

302-334

12.60-13.20

1260-1320

>11.8

>939

>14

>1114

-0.12

-0.59

320

100

N42M

40-44

318-350

13.00-13.50

1300-1350

>12.0

>955

>14

>1114

-0.12

-0.59

320

100

N45M

42-46

334-366

13.20-13.80

1320-1380

>12.2

>971

>14

>1114

-0.12

-0.59

320

100

N33H

31-34

247-271

11.30-11.70

1130-1170

>10.5

>836

>17

>1353

-0.11

-0.58

320-350

120

N35H

33-36

263-287

11.70-12.10

1170-1210

>10.9

>868

>17

>1353

-0.11

-0.58

320-350

120

N38H

36-39

287-310

12.10-12.50

1210-1250

>11.3

>899

>17

>1353

-0.11

-0.58

320-350

120

N40H

38-41

302-326

12.40-12.80

1240-1280

>11.6

>923

>17

>1353

-0.11

-0.58

320-350

120

N42H

40-43

318-342

12.80-13.20

1280-1320

>12.0

>955

>17

>1360

-0.11

-0.58

320-350

120

N33SH

31-34

247-272

11.30-11.70

1130-1170

>10.6

>844

>20

>1592

-0.11

-0.55

340-360

150

N35SH

33-36

263-287

11.70-12.10

1170-1210

>11.0

>876

>20

>1592

-0.11

-0.55

340-360

150

N38SH

36-39

287-310

12.10-12.50

1210-1250

>11.4

>907

>20

>1592

-0.11

-0.55

340-360

150

N40SH

38-41

302-326

12.10-12.80

1240-1280

>11.8

>939

>20

>1592

-0.11

-0.55

340-360

150

N28UH

26-29

207-231

10.20-10.80

1020-1080

>9.6

>768

>25

>1990

-0.11

-0.51

350-380

180

N30UH

28-31

223-247

10.80-11.30

1080-1130

>10.2

>816

>25

>1990

-0.11

-0.51

350-380

180

N33UH

31-34

247-271

11.30-11.70

1130-1170

>10.7

>856

>25

>1990

-0.11

-0.51

350-380

180

N28EH

26-29

211-236

10.40-10.90

1040-1090

>9.8

>784

>30

>2388

-0.11

-0.51

350-380

200

N30EH

28-31

223-247

10.80-11.30

1080-1130

>10.2

>812

>30

>2388

-0.11

-0.51

350-380

200

1.Licensed Products by SSMC-MQ - ISO 9002 Quality Standard Certified 
2.The above-mentioned data of magnetic parameters and physical properties are given at room temperature. 
3.The maximum service temperature of magnet is changeable due to the ratio length and diameter and environmental factors. 
4. Special properties can be achieved with custom method.
Physical and Mechanical Properties

Thermal Conductivity

7.7 kcal/m-h-°C

Young's Modulus

1.7 x 104 kg/mm2

Bending Strength

24 kg/mm2

Compressive Strength

80 kg/mm2

Electrical Resistivity

160 µ-ohm-cm/cm2

Density

7.4-7.55 g/cm3

Vickers Hardness

500 - 600
 

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