At this stage plastic magnetic ring manufacturers applied in the motor of the magnetic material is the key to ndfeb such a strong magnet as the leading, at the same time also points calcination or bonding (injection molding) NdFEB. Using Ndfeb to do the motor magnet, the size of the rare earth permanent magnet motor is correspondingly small, and light, the servo control system is corresponding to the high output power and speed/net weight ratio, high operating torque, more electricity saving. Naturally, samarium cobalt or ferrite cores will be selected as motor magnets.

Bond plastic magnet factory or ac dc motor, linear motor, brush motor and so on. Plastic ferrite manufacturers are generally applied to the motor magnet and motor magnet attraction and repulsion to promote, under normal conditions are the use of axial symmetry magnetization tile magnetic to form a ring. Sintered Ndfeb is a variety of raw materials, so it is more difficult to make complex magnetized orientation. At this stage, there are sintered Ndfeb magnetic radioactive magnetization magnet, but for the specifications and models of this kind are a lot of restrictions, and its magnetic energy is also very unstable, consistency is very poor, at the same time the mold shell electromagnetic coil and magnetization fixture such are very expensive.

The electromagnetic field occurs after the electromagnetic coil is plugged into the motor, and the electric transmission coil is also called the electromagnet. The positive and negative sides of a magnet will attract the mutually repulsive opposite poles of an electromagnet. Therefore, it is necessary to have a magnet, otherwise the REDOX potential electromagnetic coil does not bear the force, the motor is not easy to rotate. Because the magnet is the key part of all mechanical equipment, in the motor, most of the large and medium-sized motors will use Ndfeb, but also have some unique use of samarium cobalt magnet, in addition to some of the functional requirements of the motor is not too high will also use ferrite core magnetic tile.