The spindle motor is also called a high-speed motor, which refers to an AC motor with a rotational speed of more than 10,000 rpm/min. Mainly used in wood, aluminum, stone, hardware, glass, PVC and other industries, it has the advantages of fast speed, small size, light weight, low material consumption, low noise, low vibration, etc. It has attracted more and more attention in related industries. In the modern society with rapid technological progress, the spindle motor has been widely applied, and it couples with its meticulous workmanship, high speed and high processing quality of the motor. Besides, other ordinary motors cannot meet the technical requirements of the spindle motor or play a role as the spindle motor doe in the industrial production process.