The vacuum stepper motor is made of suitable new materials and manufactured through new production processes. It is designed strictly according to the standard for two-phase four wire hybrid stepper motors with frame numbers 28, 35, 42, 57, and 86. According to testing, it can operate normally in vacuum high and low temperature environments. It can also be customized according to special environments to make it resistant to radiation, mold, salt spray, corrosion, and other high cleanliness environments.