Ferrite Arc Magnets

Ferrite magnets face inherent challenges in achieving precise shapes and dimensions during the pressing process under an external magnetic field. This limitation makes it difficult to directly produce magnets that meet the exact requirements of practical applications. As a result, additional machining of the sintered blanks is necessary to ensure the final product meets the desired specifications.

Due to their hard, brittle, and electrically insulating nature, ferrite magnets can only be machined by grinding and slicing to achieve the required dimensional accuracy, geometric tolerance, and surface roughness. Therefore, the machining of ferrite arc magnets is primarily carried out through profile (contour) grinding, as wire-cutting processes are not suitable for ferrite materials.

Unlike Neodymium arc magnets, which are used in both radial flux and axial flux systems, ferrite arc magnets are primarily used in radial flux motors. These magnets typically feature a uniform arc shape or other specialized profiles designed to optimize magnetic performance.

Ferrite arc magnets are characterized by diametrical magnetization, which is perpendicular to the axis of rotation. They are typically magnetized in this diametrical direction and are often used in pairs to achieve the desired magnetic flux distribution. Additionally, unlike Neodymium arc magnets, pure radially magnetized ferrite arc magnets are available.