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4 pair pole (8-pole) sintered ferrite rotor magnets offer excellent demagnetization resistance and temperature stability at a high cost-performance ratio. Primarily used in fans, electric pumps, and home appliance motors, they are mainly anisotropic grade, with a few applications requiring isotropic properties.
Below is a list of selected 4-pole sintered ferrite rotor magnets from our company, primarily featuring external 8-pole magnetization (8 poles magnetized on the outer diameter surface).
D54*d35*20mm / Outer diameter 8-pole / Y30
D55*d37*50mm /Outer diameter 8-pole
D40.3*d28.3*26mm / Internal 8-pole
D48*d30.5*13.6mm / 8-pole
D18*d8*9mm / Outer diameter 8-pole
D16*d10*9mm / 8-pole / Y10
D46.5*d29.5*20mm / Outer diameter 8-pole
D49*d29.7*23.98mm / Outer diameter 8-pole
D71.4*d52.86*7.94mm / Outer diameter 8-pole
D54*d35*40mm / Outer diameter 8-pole
D70.2*d51.83*28mm / Outer diameter 8-pole
D25.58*d14.18*28mm / Outer diameter 8-pole
D53*33.5*35mm / Outer diameter 8-pole
D53*33.5*40mm / Outer diameter 8-pole
D35.8*15.8*20mm / Outer diameter 8-pole
……
The above specifications cover applications ranging from small-sized micro motors to large-diameter industrial motors, featuring stable magnetic performance and excellent batch consistency.
Custom drawings and sample production are available for special dimensions, tolerance requirements, or magnetic property specifications (remanence Br, coercivity Hcb).
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