Abstract: stepper motor including the stepper motor and stepper generator, the two kinds of motor has its own scope of application, it has certain related parameters, the manufacturer to set the parameters for when the design, when the choose and buy of people will be through reasonable selection of its parameters. This article is to introduce some important parameters of step motor. A, rated capacity, power step motor at the time of production is based on the related parameters for production, and its power rating and the rated capacity is the important parameter, affects its performance. Rated capacity refers to step into the apparent power rating of the generator output. For motor rated power refers to the mechanical power effectively, on the output shaft for generators, rated power refers to the rated output electric power effectively. Two, rated voltage, rated voltage and rated current is also the parameters of the stepper motor is very important, rated voltage is rated at run time, add the line on the stator winding voltage, rated current is rated at runtime, bypassing the limited of the stator winding current. Third, rated frequency of step motor parameters include the rated frequency, rated frequency refers to the rated frequency at runtime. The unity of the frequency in our country are fixed for 52 hz. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: