This is a multi-pole ring magnet with an outer diameter of 41mm, an inner diameter (hole) of 35mm, and a height of 24.5mm. It is made of injection molded ferrite. It is magnetized by radial 4-pole and has a surface magnetic intensity of about 740 Gauss, which is suitable for various permanent magnet DC motors, ceiling fan brushless motor, stepper motor, servo motor..
4 pole radial ferrite magnetic ring 41x35x24.5mm sample physical picture;
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