motor core ,  as the key parts in the motor, it's one of the most important part and has the great contribution in each motor. Usually , one motor core contain one rotor plus one stator. The stator as the not moving parts in the motor, but the rotor usually stay inside of the stator and running fast during the motor has the power.
Motor core widely used in step motor, universal motor, reduction gear motor, external rotor motor, shaded pole motor, induction motor.
For a fully motor, motor core is the very important thing in each motor. So if you want to improve the totally motor performance, it should do some hard work on the motor core. Usually we can change the material type of motor core, adjust the silicon steel's magnetism rate, control the right core loss of the silicon steel to make sure the motor has better performance. Normally one precision motor core need the high precision hardware tooling use the interlocking way, plus the high speed press machine to stamping it. By this way, it's more convenience to make sure the motor core's surface integrity, One precision motor core can ensure the motor has the better quality.
Basically the good performance motor core use the above process to stamping it. The highly precision hardware tooling plus the high speed press machine, use the excellence engineer and conscientious worker, to make sure each motor core has the better performance when come out.