The length of the motor's output shaft is 190mm, the standard shaft diameter is 19mm when the front end is 100 mm, and the rear end is 24mm when the rear end is 90 mm. The shaft diameter is enlarged to make the motor have excellent bearing capacity (the shaft length can be customized). The thermodynamic analysis method is used to optimize the structure design, and the cooling fan blade is added at the front flange to largely eliminate the influence of the heat of the oven equipment on the motor conduction.