Advantages of a Radial Magnet

Advantages of a Radial Magnet

Radial Magnets produce magnetic field distribution that lies along an axis perpendicular to that of a cylinder or sphere and are formed by placing two unlike poles of a magnet parallel with each other and facing each other. They can be found used for particle beam focusing and guiding in traveling wave tubes and klystrons; their strong magnetic fields can suppress any inward and outward axial drift of beam guiding centers from their mean magnetic surface.

Radial field designs can also improve the performance of certain applications such as metal recycling and mineral processing. A radial field design allows a greater proportion of ferrous metals from nonferrous materials to be separated more efficiently; Bunting offers several radial field-designed separators such as drums, pulleys, and rare earth roll separators to meet this need.

Radial magnet designs allow these magnets to produce higher fields within a smaller volume, meaning less rare earth or other expensive material is required to create similar magnetic fields as seen with more traditional U or E shapes. Furthermore, this unique shape reduces iron losses in their axial flux path which are found in prior art designs.

Some applications don't require an entirely radial field; instead, a pseudo-radial field can be created using diametrically magnetized arc segments of small-angle magnetization. When assembled into a circle or ring shape it starts resembling its intended radial pattern and may even improve with smaller segment sizes; however, this increases assembly time significantly.

Multiple rings stacked axially, each rotated relative to its neighbor, can further improve the pseudo-radial magnetic wave shape. Iron pole pieces may further aid this enhancement process.

Radial sintering can create an even smoother magnetic field distribution in a rotor, leading to improved performance and lower manufacturing costs. Furthermore, this process allows for thinner, lighter magnets.

Another advantage of radial magnets is that they allow for a much greater range of rotor designs than is achievable using traditional U or E-shaped magnets, providing significant weight savings as well as reduced space requirements for internal components like bearings and pole pieces. Furthermore, using radial magnets may eliminate complex and costly reentrant features in traveling wave tubes and klystrons thereby further reducing cost while improving reliability - ultimately making radial magnets an excellent alternative to U or E-shaped magnets in many applications.


Sintered SmCot Magnet