Speaker Use Permanent Rings Magnet Certified by Ts16949 and RoHS

Model NO.: N35-N54;N35M-N52M,N33H-N50H,N30SH-N50SH,N30UH-N45U
Work Temp: 80-220 Degree
Material: Rare Earth Permanent Magnet
Tolerance: +/-0.05mm
Magnetism Direction: Thickness
Surface Treatment: Smooth
Processing: Sintered Motor Magnet Permanent
Color: as Per Customer′s Request
Delivery Time: Within 3-30 Working Days
Trademark: GXL
Transport Package: Small Packing Box: 12X10X5cm or as Demands
Specification: as demands
Origin: China
HS Code: 8501110
Speaker use Permanent Rings Magnet  with Good Performance Certified by TS16949 and ISO9001 

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: NdFeB (Neodymium Iron Boron)
 
Shape: Ring ( Cylinder, Block, Disc,Countersunk, Segment, Trapezoid, Irregular shapes and more. Customized shapes for Sintered NdFeB  Magnet are available.)
 
Tolerance in size: +/-0.1mm ( +/-0.05 available)
 
Type of coating:  Ni-Cu-Ni, Nickel, Zn, Gold, Silver, Copper, Epoxy, Chemical, PTFE, Parylene, Everlube, Passivation and more.
 
Grade:  N35-N52; N33M-N50M; N33H-N48H; N30SH-N45SH;N30UH-N40UH; N28EH-N38EH,N28AH-N35AH.

Direction of magnetisation: Axially magnetized or Diametrically magnetized

Quality control:  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. NdFeB  Magnetic Parameter table
N35-N54; N35M-N52M; N33H-N50H, N30SH-N50SH; N30UH-N45UH,
N28EH-N40EH,N28AH-N35AH,N30SH-T-N45SH-T,N30UH-T-N42UH-T   
  CGS Unit  SI Unit 
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<