If you buy stepper motors, know the type of stepping motor
Stepping motors are divided into three types: permanent magnet(PM), reaction(VR) and hybrid(HB). The permanent magnetic stepper is generally two-phase, the torque and volume are small, and the stepper angle is generally 7.5 degrees or 15 degrees; Reaction-type stepping is generally three-phase, can achieve large torque output, step angle is generally 1.5 degrees, but noise and vibration are very large, in Europe and the United States and other developed countries in the 1980s has been eliminated; Mixed stepping refers to the advantages of mixing the permanent magnetic type and the reactive type. It is divided into two phases and five phases. The two-phase stepping angle is generally 1.8 degrees and the five-phase stepping angle is generally 0.72 degrees. The application of this stepping motor is the most extensive..
