Improved industrial fast door built-in servo roller motor

The utility model relates to the technical field of fast doors, and provides an improved industrial fast door built-in servo roller motor, which comprises a motor fixing seat, a transmission wheel, a planetary reducer, a servo motor, a motor brake, an encoder and an auxiliary bearing, an output shaft of the servo motor is connected with the planetary reducer through a motor flat key, a front cover spigot of the servo motor is connected with the planetary reducer in a sealed mode, the planetary reducer is connected with the transmission wheel through an extending shaft and a transmission wheel flat key, and a rear cover of the servo motor is connected with a front cover of the servo motor through a servo motor stator. The auxiliary bearing is arranged between the rear cover of the servo motor and the inner wall of the door curtain roller so that the door curtain roller can be rotationally connected with the servo motor, and the motor fixing base is connected with the rear cover of the servo motor. The industri