- Model NO.: ss-003
- Manufacturer: Ningbo Keke Magnet Co., Ltd.
- Type: N35-N50, 35m-48m, 35h-45h, 35sh-45sh, 28uh-38uh
- Coatings: Ni, Zn, Gold, Copper, Epoxy, etc
- Hcj: 35koe
- Specification: ROHS
- HS Code: 85051110
- Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
- Name: Neodymium Ring Magnet
- Product Certificate: ISO/Ts 16949:2009
- Hcb: 10.7koe
- Trademark: COCO
- Origin: Ningbo China Mainland
Specifications:
A. Â Materials: Neodymium-Ferrum-Boron;
B. Grades: N35-N54, 35M-52M, 33H-50H, 33SH-45SH, 30UH-42UH, 30EH-38EH, and 28AH-33AHB.
C. Coating: Various coatings to protect the magnets, such as Ni, Zn, gold, copper, epoxy, chemical, parylene and so on;
D. Shape: Block, Ring, Disc, Cylinder, Arc(Segment), Half Ring, and Customized Design;
E. Size: Customized size per your requirements, largest block length of 150mm, biggest ring of D220mm, smallest thickness of 0.5mm
F. Performance: High coercive force (Hcb) can reach 9.7kOe (772KA/M), the max operation temp (Tw) is up to 220 degree centigrade or 380 curie temperature;
G. Applications: Magnet Separators, Sensors, Motors, Rotors, Wind turbines, Wind generators, Loudspeakers, Magnetic hooks, Magnetic holder, Filters Automobiles Magnetic jewelries, toys, magnetic buttons, Magnetic therapy and so on;
Warning:Â
Due to their extremely high magnetic strength and brittle nature,magnet  parts must be handled very carefully to prevent injury to personnel and damage to the magnet Receiving and assembly personnel must be pre-warned about the dangers of handling these magnet parts.
Production process of Ring Neodymium Magnet Loudspeakers:
Raw Materials-->Mixture--->Vacuum Melting--- > Powder Production--- >Molding ---> Vacuum Sintering--- > Testing--- >Mechanical Processing--- > Surface Coating--- >Magnetized--- > Inspecting--- > Packing and Shipping.
High Performance Sinterated NdFeB Magnet Item | Grade | Remanence;Br | Coercive Force;bHc | Intrisic Coercive Force;iHc | Max Energy Product;(BH)max | Working Temp.  |
||||||||
kGs | T | kOe | KA/m | kOe | KA/m | MGOe | KJ/m3 | |||||||
Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | |||||||
N | N54 | 15.1 | 14.5 | 1.51 | 1.45 | ≥10.5 | ≥836 | ≥11 | ≥876 | 55 | 51 | 438 | 406 | ≤80 |
N52 | 14.8 | 14.2 | 1.48 | 1.42 | ≥10.5 | ≥836 | ≥11 | ≥876 | 53 | 49 | 422 | 390 | ≤80 | |
N50 | 14.5 | 14.0 | 1.45 | 1.40 | ≥11.0 | ≥876 | ≥12 | ≥955 | 51 | 47 | 406 | 374 | ≤80 | |
N48 | 14.3 | 13.7 | 1.43 | 1.37 | ≥11.0 | ≥876 | ≥12 | ≥955 | 49 | 45 | 390 | 358 | ≤80 | |
N45 | 13.8 | 13.2 | 1.38 | 1.32 | ≥11.0 | ≥876 | ≥12 | ≥955 | 46 | 42 | 366 | 334 | ≤80 | |
N42 | 13.5 | 12.9 | 1.35 | 1.29 | ≥11.0 | ≥876 | ≥12 | ≥955 | 44 | 40 | 350 | 318 | ≤80 | |
N40 | 13.2 | 12.6 | 1.32 | 1.26 | ≥11.0 | ≥876 | ≥12 | ≥955 | 41 | 38 | 334 | 302 | ≤80 | |
N38 | 13.0 | 12.2 | 1.30 | 1.22 | ≥11.0 | ≥876 | ≥12 | ≥955 | 40 | 36 | 318 | 287 | ≤80 | |
N35 | 12.2 | 11.7 | 1.22 | 1.17 | ≥10.9 | ≥868 | ≥12 | ≥955 | 36 | 33 | 287 | 263 | ≤80 | |
M | N52M | 14.8 | 14.2 | 1.48 | 1.42 | ≥13.3 | ≥1059 | ≥14 | ≥1114 | 43 | 49 | 422 | 390 | ≤100 |
N50M | 14.5 | 14.0 | 1.45 | 1.40 | ≥13.1 | ≥1043 | ≥14 | ≥1114 | 41 | 47 | 406 | 374 | ≤100 | |
N48M | 14.3 | 13.7 | 1.43 | 1.37 | ≥12.8 | ≥1019 | ≥14 | ≥1114 | 49 | 45 | 390 | 358 | ≤100 | |
N45M | 13.8 | 13.2 | 1.38 | 1.32 | ≥12.4 | ≥987 | ≥14 | ≥1114 | 46 | 42 | 366 | 334 | ≤100 | |
N42M | 13.5 | 12.9 | 1.35 | 1.29 | ≥12.1 | ≥963 | ≥14 | ≥1114 | 44 | 40 | 350 | 318 | ≤100 | |
N40M | 13.2 | 12.6 | 1.32 | 1.26 | ≥11.8 | ≥939 | ≥14 | ≥1114 | 41 | 38 | 334 | 302 | ≤100 | |
N38M | 13.0 | 12.2 | 1.30 | 1.22 | ≥11.7 | ≥915 | ≥14 | ≥1114 | 40 | 36 | 318 | 287 | ≤100 | |
N35M | 12.2 | 11.7 | 1.22 | 1.17 | ≥10.9 | ≥868 | ≥14 | ≥1114 | 36 | 33 | 287 | 263 | ≤100 | |
H | N50H | 14.5 | 14.0 | 1.45 | 1.40 | ≥12.9 | ≥1027 | ≥16 | ≥1274 | 51 | 47 | 406 | 374 | ≤120 |
N48H | 14.3 | 13.7 | 1.43 | 1.37 | ≥12.7 | ≥1011 | ≥16 | ≥1274 | 49 | 45 | 390 | 358 | ≤120 | |
N46H | 14.0 | 13.4 | 1.40 | 1.34 | ≥12.5 | ≥995 | ≥17 | ≥1353 | 47 | 43 | 374 | 342 | ≤120 | |
N44H | 13.7 | 13.1 | 1.37 | 1.31 | ≥12.3 | ≥979 | ≥17 | ≥1353 | 45 | 41 | 358 | 326 | ≤120 | |
N42H | 13.5 | 12.9 | 1.35 | 1.29 | ≥12.1 | ≥963 | ≥17 | ≥1353 | 44 | 40 | 350 | 318 | ≤120 | |
N40H | 13.2 | 12.6 | 1.32 | 1.26 | ≥11.8 | ≥939 | ≥17 | ≥1353 | 42 | 38 | 334 | 302 | ≤120 | |
N38H | 13.0 | 12.2 | 1.30 | 1.22 | ≥11.5 | ≥915 | ≥17 | ≥1353 | 40 | 36 | 318 | 287 | ≤120 | |
N35H | 12.4 | 11.7 | 1.24 | 1.17 | ≥11.0 | ≥876 | ≥17 | ≥1353 | 37 | 33 | 295 | 263 | ≤120 | |
N33H | 11.7 | 11.3 | 1.17 | 1.13 | ≥10.5 | ≥836 | ≥17 | ≥1353 | 34 | 31 | 271 | 247 | ≤120 | |
SH | N45SH | 14.0 | 13.4 | 1.40 | 1.34 | ≥12.5 | ≥995 | ≥20 | ≥1592 | 47 | 43 | 374 | 342 | ≤150 |
N44SH | 13.7 | 13.1 | 1.37 | 1.31 | ≥12.3 | ≥979 | ≥20 | ≥1592 | 45 | 41 | 358 | 326 | ≤150 | |
N42SH | 13.5 | 12.9 | 1.35 | 1.29 | ≥12.1 | ≥963 | ≥20 | ≥1592 | 44 | 40 | 350 | 318 | ≤150 | |
N40SH | 13.2 | 12.6 | 1.32 | 1.26 | ≥11.8 | ≥939 | ≥20 | ≥1592 | 42 | 38 | 334 | 302 | ≤150 | |
N38SH | 12.9 | 12.2 | 1.29 | 1.22 | ≥11.5 | ≥915 | ≥20 | ≥1592 | 40 | 36 | 318 | 287 | ≤150 | |
N35SH | 12.4 | 11.7 | 1.24 | 1.17 | ≥11.0 | ≥876 | ≥20 | ≥1592 | 37 | 33 | 295 | 263 | ≤150 | |
N33SH | 12.1 | 11.4 | 1.21 | 1.14 | ≥10.7 | ≥852 | ≥20 | ≥1592 | 35 | 31 | 279 | 247 | ≤150 | |
UH | N42UH | 13.5 | 12.9 | 1.35 | 1.29 | ≥12.1 | ≥963 | ≥25 | ≥1990 | 44 | 40 | 350 | 318 | ≤180 |
N40UH | 13.2 | 12.6 | 1.32 | 1.26 | ≥11.8 | ≥939 | ≥25 | ≥1990 | 42 | 38 | 334 | 302 | ≤180 | |
N38UH | 12.9 | 12.2 | 1.29 | 1.22 | ≥11.5 | ≥915 | ≥25 | ≥1990 | 40 | 36 | 318 | 287 | ≤180 | |
N35UH | 12.4 | 11.7 | 1.24 | 1.17 | ≥11.0 | ≥876 | ≥25 | ≥1990 | 37 | 33 | 295 | 263 | ≤180 | |
N33UH | 12.1 | 11.4 | 1.21 | 1.14 | ≥10.7 | ≥852 | ≥25 | ≥1990 | 35 | 31 | 279 | 247 | ≤180 | |
N30UH | 11.6 | 10.8 | 1.16 | 1.08 | ≥10.2 | ≥812 | ≥25 | ≥1990 | 32 | 28 | 255 | 223 | ≤180 | |
EH | N38EH | 12.9 | 12.2 | 1.29 | 1.22 | ≥11.5 | ≥915 | ≥30 | ≥2388 | 40 | 36 | 318 | 287 | ≤200 |
N35EH | 12.4 | 11.7 | 1.24 | 1.17 | ≥11.0 | ≥876 | ≥30 | ≥2388 | 37 | 33 | 295 | 263 | ≤200 | |
N33EH | 12.1 | 11.4 | 1.21 | 1.14 | ≥10.7 | ≥851 | ≥30 | ≥2388 | 35 | 31 | 279 | 247 | ≤200 | |
N30EH | 11.5 | 10.8 | 1.15 | 1.08 | ≥10.2 | ≥812 | ≥30 | ≥2388 | 32 | 28 | 255 | 223 | ≤200 | |
AH | N33AH | 12.1 | 11.4 | 1.21 | 1.14 | ≥10.7 | ≥852 | ≥35 | ≥2786 | 35 | 31 | 279 | 247 | ≤230 |
N30AH | 11.5 | 10.8 | 1.15 | 1.08 | ≥10.2 | ≥812 | ≥35 | ≥2786 | 32 | 28 | 255 | 223 | ≤230 | |
N28AH | 11.2 | 10.4 | 1.12 | 1.04 | ≥9.70 | ≥772 | ≥35 | ≥2786 | 30 | 26 | 239 | 207 | ≤230 |