The sample is a 10mm hollow cylindrical magnet made of sintered ferrite with an outer diameter of 10mm, a hole of 4mm, and a height of 15mm. It has various anisotropy levels and is magnetized using a radial 4-pole magnetic field. It is a type of motor rotor magnet with a surface magnetic field strength of 1400 Gauss and is mainly used for micro motors and water pump motors.
4 pole radial ferrite rotor ring 10x4x15mm sample magnetic pole and size display;