Multipole Sintered NdFeB Ring Magnets information:
Size : Customized
Shape ring / tube magnet
Raw material : Permanent Neodymium Magnet
Grade : N35 N38 N42 N50 N52(other grade need to production )
Coating : Zn / Nickel / Epoxy
Magnetism : Radially
Working temperature 60 ℃-220 ℃
Package Standard export package
Neodymium ring magnet ais also known as tube magnet, a round disc magnet with a straight hole along the centre, the hole in centre ensures great versatility.
Most ring magnet is with north and south poles on the flat circular surfaces (this is called as axial magnetisation). The few exception that is diametrically magnetised is specifically marked. Also, Multi pole ring magnet, even radially magnetized ring magnet, is more and more referred in this industry now.
Material neodymium-iron-boron
Shape available Disc,Cylinder,Block,Ring,Countersunk,Segment,Trapezoid,Irregular shapes and more;More shapes can be customized.
Coating Ni-Cu-Ni,Nickel,Zinc,Gold,Silver,Epoxy and more.
Grade WorkingTemperature Temp.Coefficient
N35-N52 80°C (176°F)
N35M-N45M 100°C (212°F)
N33H-N42H 120°C (248°F)
N30SH-N40SH 150°C (302°F)
N28UH-N35UH 180°C (356°F)
N28EH-N38EH 180°C (356°F)
N30AH-N33AH 220°C (428°F)
Technology We have advanced R&D center,quality control and professional machining technicians.
Application
Neodymium magnet raw magnetrials are widely used in industrial field,such as speaker,louder speaker,sensor,motor,alternator ect;And also it is popular in ladies bags,purses,shoes,crafts and jewelry ect.
Radially Orientated Sintered NdFeB Rings
Radially Orientated Sintered NdFeB Rings in single piece is a relatively new development, offering designers a cost effective alternative to using arc segments. A single radial ring is more robust and can reduce assembly time. It can alse provide the option of more complex and consistent pole patterns, resulting in better performance. radially magnetized ring magnet
Each new size requires special tooling for both the mold and magnetizing fixture, so these costs need to be factored in from the star.
Dimensional Range:
O.D≤Ф300mm
I.D≥Φ60mm
Best I.D/O.D ratio 0.7-0.9
Wall Thickness 2-30mm
Length≤50mm
Plarity (pole numbers are dependent on size): Single Pole 4,6,8 and more could be possible
NdFeB Grades Available: N30-N45,N30M-45M,N30H-N42H,N30SH-N40SH,N28UH-N35UH
Coating: Phosphate, Ni, Ni-Cu-Ni, Zn or Epoxy
Typical Tooling Cost(e.g Ф120mm): $10000($8000 mold tool, $2000 magnetizing Fixture)
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