Abstract: stepper motor in practical application, if not in accordance with the provisions of the technical conditions of operation, and blockage of the air duct was dust can cause motor overheating phenomenon, so want to cooling is necessary, otherwise the temperature rise will affect the damaged parts. This paper is to introduce cooling ways of stepping motor. A, air cooling stepper motor after using for a long time, it's easy to fever, and this problem has become increasingly serious, effective measures must be taken to for cooling, air cooling is a very effective way of cooling, this way is through a combination of radial and axial fan type ventilation system, but the cooling capacity of stepping motor has certain requirements. Second, hydrogen cooling hydrogen cooling way is also a kind of frequently used in stepper motor cooling, the cooling effect is much better than air cooling effect, the rotor and stator wire make it hollow, and then will have a certain compression of hydrogen and compresses it into conductor, since it can be to take away heat. Three cooling and water cooling water is also a very effective way for step motor cooling, the cooling effect is better than the cooling effect of hydrogen, the main way for inner cooled, widely applied to cold in the stator winding. 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: