Electric Neodymium Ring Speaker Neo Strong Magnet
Product categories of Flange Bolts & Collared Hex Bolts, we are specialized manufacturers from China, Flange Hex Bolt, Heavy Hex Bolts suppliers/factory, wholesale high-quality products of Hex Tap Bolts, we have the perfect after-sales service and technical support. Look forward to your cooperation!
Used in automotive applications, plumbing, and more, flange bolts feature a Washer like flange beneath the Bolt head that speeds production time and distributes the clamping load, offering protection to the mating surface.
Flange Head Bolt,Metric Flange Bolts,Hexagon Flange Bolt,Hex Head Flange Bolt Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.com
We have the fixed Long-term cooperation factory. Which is mainly produce kinds magnet. We have invested much funds for some equipment, for example injection molding machine.
And Our technology is introduced from Japan and Germany. The major technical leader in our factory is from Japan and has been studying this field for over 15 years.   Wish our best technology can solve your production problems.
1. Product Details
NdFeB permanent magnetic material:NdFeB is the most powerful commercial magnets at present.That why it is called the "King of Magnets",Its (BH)max is 10 times higher than Ferrite magnets.The NdFeB itself is easy to machining.Its highest working temperature reaches 200ºC,It has the advantage of stable performance, hard texture,and very cost effective,hence it is widely implemented,But the downside of is,Its very active to chemical reactions,so we need to treat it surface with coationgs or plationg (Eg.Zn plating,Ni plating,Electrophoresis,etc)
Material:Â NdFeB (Neodymium Iron Boron)
Â
Shape: Ring ( Cylinder, Block, Disc,Countersunk, Segment, Trapezoid, Irregular shapes and more. Customized shapes for Sintered NdFeB  Magnet are available.)
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Tolerance in size:Â +/-0.1mm ( +/-0.05 available)
Â
Type of coating:Â Â Ni-Cu-Ni, Nickel, Zn, Gold, Silver, Copper, Epoxy, Chemical, PTFE, Parylene, Everlube, Passivation and more.
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Grade:Â Â N35-N52; N33M-N50M; N33H-N48H; N30SH-N45SH;N30UH-N40UH; N28EH-N38EH,N28AH-N35AH.
Direction of magnetisation:Â Axially magnetized or Diametrically magnetized
Quality control: Â ISO90001, ISO/TS16949,ISO14001,OHSAS18001,ROHS,ROSE
Features &Advantage:the most powerful permanent magnet, offers a great return for cost & performance, have the highest field/surface strength(Br), high coercively(Hc), can be easily formed into various shapes and sizes. Be reactive with moisture and oxygen,usualy supplied by plating (Nickel, Zinc, Passivatation, Epoxy etc.).
2. NdFeBÂ Â Magnetic Parameter table
N35-N54; N35M-N52M; N33H-N50H, N30SH-N50SH; N30UH-N45UH,
N28EH-N40EH,N28AH-N35AH,N30SH-T-N45SH-T,N30UH-T-N42UH-TÂ Â Â
Â
CGS UnitÂ
SI UnitÂ
Grade
Remanence  Br, KGS
Coercive Force   HcB, KOe
Intrinsic Coercivity
HcJ, kOe
Max Energy Magnetic
(BH)max, MGsOe
Remanence Br, T
Coercive Force              HcB, kA/m
Intrinsic Coercivity HcJ, kA/m
Max Energy Magnetic (BH)max, kJ/m3
N35
11.7
-
12.2
≥11.0
≥12.0
33
-
36
1.17
-
1.22
≥876
≥955
263
-
287
N38
12.2
-
12.6
≥11.0
≥12.0
36
-
39
1.22
-
1.26
≥876
≥955
287
-
310
N40
12.5
-
12.9
≥11.0
≥12.0
38
-
41
1.25
-
1.29
≥876
≥955
302
-
326
N42
12.9
-
13.3
≥11.0
≥12.0
40
-
43
1.29
-
1.33
≥876
≥955
318
-
342
N45
13.3
-
13.7
≥11.0
≥12.0
43
-
46
1.33
-
1.37
≥876
≥955
342
-
366
N48
13.6
-
14.1
≥11.0
≥12.0
46
-
49
1.36
-
1.41
≥876
≥955
366
-
390
N50
14.0
-
14.4
≥11.0
≥12.0
48
-
51
1.4
-
1.44
≥876
≥955
382
-
406
N52
14.3
-
14.7
≥11.0
≥11.0
49
-
53
1.43
-
1.47
≥835
≥955
390
-
422
N54
14.7
-
15.0
≥10.4
≥11.0
52
-
55
1.47
-
1.50
≥835
≥875
414
-
438
N35M
11.7
-
12.2
≥11.2
≥14.0
33
-
36
1.17
-
1.22
≥892
≥1114
263
-
287
N38M
12.2
-
12.6
≥11.4
≥14.0
36
-
39
1.22
-
1.26
≥907
≥1114
287
-
310
N40M
12.5
-
12.9
≥11.4
≥14.0
38
-
41
1.25
-
1.29
≥907
≥1114
302
-
326
 N42M
12.9
-
13.3
≥11.4
≥14.0
40
-
43
1.29
-
1.33
≥907
≥1114
318
-
342
N45M
13.3
-
13.7
≥11.4
≥14.0
43
-
46
1.33
-
1.37
≥907
≥1114
342
-
366
N48M
13.6
-
14.1
≥11.4
≥14.0
46
-
49
1.36
-
1.41
≥907
≥1114
366
-
390
N50M
14.0
-
14.4
≥11.4
≥14.0
48
-
51
1.4
-
1.44
≥907
≥1114
382
-
406
N52M
14.3
-
14.8
≥11.4
≥14.0
50
-
53
1.43
-
1.48
≥907
≥1114
398
-
422
N33H
11.4
-
11.8
≥10.3
≥17.0
31
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