The utility model discloses an it smelts boiler pump's motor to can be used to stainless steel belongs to a modified motor structure, which comprises a motor body, the cover is equipped with the bearing frame on motor body's the output shaft, be equipped with insulating the pad between bearing frame and the motor body, install centrifugal fan on arbitrary one side of motor body's stator for open with synchronous motors and stop. Through add insulating the pad between bearing frame and motor body, can prevent to keep apart the production of shaft current, to avoid electrical efficiency reduces and additionally generates heat to through the stator side -mounting centrifugal fan at motor body, the amount of wind forces ventilating and cooling to it inside directly letting in the motor stator core winding, even the motor moves under the low frequency, independent cooling blower is not influenced yet, keeps motor heat dissipation's validity, simultaneously the utility model provides an it smelts boiler pump's motor to can be used to stainless steel simple structure is suitable for the industrial production, especially is suitable for and installs and use in the water pump.