China Neodymium And Ferrite Magnets Manufacturer & Supplier 
Radial distribution of 8-pole magnets, that is, 4 pairs of pole magnets, belongs to the type of multi-pole magnets, the shape of the main round, ring, hollow cylindrical mainly, the following courage magnet editors on the distribution of its magnetic poles, applications, as well as the choice of materials to do a brief introduction.
Radial distribution 8 pole magnet magnetic field distribution;
Radially distributed 8-pole magnets consist of eight poles, that is, four N-pole and four S-pole, arranged in an alternating pattern, each pole generates a magnetic field, and these eight fields interact with each other to be able to form a specific magnetic field distribution on a ring or a circle magnet, suitable for applications that require precise control of the magnetic field.
The accompanying figure shows a ring magnet magnetized by a radial 8 poles
Application examples of radially distributed 8-pole magnets;
Radially distributed 8-pole magnets are commonly used in high-performance motors, especially brushless DC motors and stepper motors.
High precision position sensors and angle sensors also often use these magnets to detect changes in position or angle using their precise magnetic field distribution.
Radially distributed 8-pole magnets are also commonly used in servo motors and sensors in robotics to improve product performance and accuracy.
How to choose the material of radial distribution 8 poles magnet?
Radial distribution 8-pole magnets mainly have NdFeB such as bonded and injection molded NdFeB. Ferrite materials are mainly sintered and injection molded ferrite.
If you want high performance and small size, it is recommended to choose NdFeB. If you want low cost and corrosion resistance, you can choose ferrite, which also has high temperature resistance.
Samples of related radial multipole magnets;
Multi-pole radial magnetic rings
Plastic Bonded Neodymium Magnets
You may also want to know;
Bonded vs Sintered Neodymium Magnets
Injection molded ferrite vs injection molded neodymium magnets
Sintered Ferrite Magnets VS Injection Molded Ferrite Magnets