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thinwall permanent magnet ring
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thinwall permanent magnet ring

Price: 1.0~2.0 USD
Trade Term: FOB
Payment Terms: T/T,L/C,WU,
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  • Product Details
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Basic Info.
  • Application: Speaker Magnet 
  • Type: Permanent 
  • Composite: Neodymium Magnet 
  • Brand Name: rainbow magnet 
  • shape: ring 
  • Grade: N/M/H/SH/UH/EH/AH 
  • coating: NiCuNi 
  • Size: D24xd22.5xh1.5mm 
  • Model No.: RM-R19 
  • Place of Origin: Zhejiang  
  • Min.Order: 10 Piece/Pieces
  • Means of Transport: Ocean, Air
Supply Capacity
  • Production Capacity: 100TON/MONTH
  • Packing:standard air cartons or sea package according
  • Delivery Date: 7-30days
1.Grade:
N-( N35, N38, N40, N42, N45, N48, N50),
M-(35M, 38M, 40M, 42M, 45M, 48M),
H-(35H, 38H, 40H, 42H, 45H),
SH-(30SH, 33SH, 35SH, 38SH, 40SH, 42SH), .
UH-( 28UH, 30UH, 33UH, 35UH, 38UH),
EH-(28EH, 30EH, 30EH, 33EH, 35EH)

2.Shape:Disc, Ring, Block, Segment, Cylinder, Customized Design

3.Coating:Ni, Ni-Cu-Ni, Zn, Tin, Epoxy, Ni-Ag, Ni-Au, etc.   

4.Applications:
instrumentation,
electro-acoustic motor,
magnetic magnetization device
micro motors,
electronic industry,
automobile industry,
petrochemicals,
nuclear magnetic resonance device,
sound device magnetic suspension system,
magnetic transmission machine
magneto therapy equipment
high performance motors,
brushless DC motors,
generators,
magnetic separation,
magnetic resonance imaging,
sensors
loudspeakers

5.Size: customized size per your requirements, biggest ring of D220mm

6. Directions of Magnetization:Diametrally Magnetized

Sintered NdFeB magnetic energy parameters
Grade
Residual Induction
Coercive Force
Intrinsic Coercive Force
Maximum Energy Product
Maximum Operating
Temperature
Br
Hcb
Hcj
(BH)max
Tw
T
KGS
KA/m
KOe
KA/m
KOe
KJ/m3
MGOe
℃
N35
1.17-1.21
11.7-12.1
876-899
11.0-11.3
≥955
≥12
263-279
33-25
≤80
N38
1.22-1.26
12.2-12.6
876-923
11.0-11.6
≥955
≥12
287-303
36-38
≤80
N40
1.26-1.29
12.6-12.9
876-923
11.0-11.6
≥955
≥12
303-318
38-40
≤80
N42
1.30-1.33
13.0-13.3
876-926
11.0-11.6
≥955
≥12
318-334
40-42
≤80
N45
1.33-1.37
13.3-13.7
876-926
11.0-11.6
≥955
≥12
342-358
43-45
≤80
N48
1.36-1.42
13.6-14.2
876-926
11.0-11.6
≥955
≥12
358-382
45-48
≤80
N50
1.41-1.45
14.1-14.5
828-907
10.4-11.4
≥876
≥11
382-398
48-50
≤70
N52
1.44-1.48
14.4-14.8
828-907
10.4-11.4
≥876
≥11
394-414
49.5-52
≤70
N35M
1.17-1.21
11.7-12.1
892-915
11.2-11.5
≥1114
≥14
263-279
33-35
≤100
N38M
1.22-1.26
12.2-12.6
907-931
11.4-11.7
≥1114
≥14
287-303
36-38
≤100
N40M
1.26-1.29
12.6-12.9
907-947
11.4-11.9
≥1114
≥14
303-318
38-40
≤100
N42M
1.30-1.33
13.0-13.3
907-947
11.4-11.9
≥1114
≥14
318-334
40-42
≤100
N45M
1.33-1.37
13.3-13.7
907-955
11.4-12.0
≥1114
≥14
334-358
42-45
≤100
N48M
1.36-1.42
13.6-14.2
907-955
11.4-12.0
≥1114
≥14
358-382
45-48
≤100
N33H
1.14-1.17
11.4-11.7
820-876
10.3-11.0
≥1353
≥17
247-263
31-33
≤120
N35H
1.17-1.21
11.7-12.1
860-907
10.8-11.4
≥1353
≥17
263-279
33-35
≤120
N38H
1.22-1.26
12.2-12.6
907-947
11.4-11.9
≥1353
≥17
287-303
36-38
≤120
N40H
1.26-1.29
12.6-12.9
907-947
11.4-11.9
≥1353
≥17
303-318
38-40
≤120
N42H
1.30-1.33
13.0-13.3
907-947
11.4-11.9
≥1353
≥17
318-334
40-42
≤120
N44H
1.33-1.36
13.3-13.6
907-947
11.4-11.9
≥1274
≥16
334-350
42-44
≤110
N30SH
1.08-1.12
10.8-11.2
804-844
10.1-10.6
≥1592
≥20
223-239
28-30
≤150
N33SH
1.14-1.17
11.4-11.7
820-876
10.3-11.0
≥1592
≥20
247-263
31-33
≤150
N35SH
1.17-1.21
11.7-12.1
860-907
10.8-11.4
≥1592
≥20
263-279
33-35
≤150
N38SH
1.22-1.26
12.2-12.6
907-947
11.4-11.9
≥1592
≥20
287-303
36-38
≤150
N40SH
1.26-1.29
12.6-12.9
907-947
11.4-11.9
≥1592
≥20
303-318
38-40
≤150
N42SH
1.30-1.33
13.0-13.3
907-947
11.4-11.9
≥1512
≥19
318-334
40-42
≤140
N28UH
1.04-1.08
10.4-10.8
780-812
9.8-10.2
≥1990
≥25
207-223
26-28
≤180
N30UH
1.08-1.12
10.8-11.2
804-844
10.1-10.6
≥1990
≥25
223-239
28-30
≤180
N33UH
1.14-1.17
11.4-11.7
820-876
10.3-11.0
≥1990
≥25
247-263
31-33
≤180
N35UH
1.17-1.21
11.7-12.1
860-907
10.8-11.4
≥1990
≥25
263-279
33-35
≤180
N38UH
1.22-1.26
12.2-12.6
860-907
10.8-11.4
≥1990
≥25
287-303
36-38
≤180
N40UH
1.26-1.29
12.6-12.9
860-907
10.8-11.4
≥1990
≥25
289-303
38-40
≤180
N28EH
1.04-1.08
10.4-10.8
780-812
9.8-10.2
≥2388
≥30
207-223
26-28
≤200
N30EH
1.08-1.12
10.8-11.2
804-844
10.1-10.6
≥2388
≥30
223-239
28-30
≤200
N33EH
1.14-1.17
11.4-11.7
820-876
10.3-11.0
≥2388
≥30
247-263
31-33
≤200
N35EH
1.17-1.21
11.7-12.1
860-907
10.8-11.4
≥2388
≥30
263-279
33-35
≤200
N38EH
1.22-1.26
12.2-12.6
860-907
10.8-11.4
≥2388
≥30
287-303
36-38
≤200
Note: The above mentioned data of magnetic parameters and physical are given at 20℃±2℃


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Ms. Annie
Tel: 86-574-87840198
Mobile: 86-18957449606
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Contact Method
Rainbow Magnet Ltd.
factory:6# Nijiatan Hi-Tech park; sales office :Room.301-303# North building No 762 Baizhang Road(E), Ningbo, Zhejiang, China (Mainland) / 315040
Fax: 86-574-87393806
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