Large Diameter Thin-Wall Radial Ring NdFeB Permanent Magnet Size: OD 240mm, ID 200mm, High 35mm
Customized various sizes Multipolar Radially Orientation Magnetic Ring, Nd-Fe-B radiation rings
D:300mm-50mm
T:50mm-10mm
H:150mm-10mm
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.
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)
Depending on the NdFeB permanent magnet synchronous motor as power, it is the future direction of the development of electric vehicles. Permanent magnet motor has the advantages of simple structure, small volume, light weight, low loss, high efficiency and high power factor. At present, the stator or rotor structure of NdFeB permanent magnet synchronous motor is mostly inserted or inlaid with magnetic ring. The structure of frame structure of soft magnetic materials as NdFeB magnetic support, shock resistance and energy density will be greatly reduced. A case of poor magnetic strip loss, fracture, and magnetic ring consistency have been found. The invention of large diameter NdFeB radiant ring has solved the above problems. It needs no magnetic frame connection, greatly increasing the energy density, ring structure, to avoid shedding and fracture, to replace the original rotor, the motor has the advantages of smaller volume, fast speed, easy to control, can also be used for precision grinding machine, no friction, zero noise, high power is special, electrical and mechanical the development of an important part of. At the same time, it also reduces the difficulty and time of assembly. The circular ring radial can be monopole, multistage (theoretical stepless number limit), oblique multistage and even 3D magnetization. It is very suitable for the bad working conditions of the electric vehicle, such as high speed vibration. It also provides a guarantee for the development of the new car hub motor and the wheel edge motor. Large Size Multipolar Radially Orientation Magnetic Ring
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