The present invention relates to a motor and a reduction gear disposed within two months cycles and motor-type drum having a drum shell. The output of the reduction gear unit rotates more slowly than the motor, the hollow input shaft accommodates various parts. A hollow input shaft and having an eccentric orbit for engaging with the internal gear of the reduction gear cycloalkyl two months, and the eccentric movement of the internal gear. Cycloalkyl and two months reducer is provided with a female thread output ring gear which is rotatably fixed to the drum shell in order to transfer a rotational force. Stationary shaft is coupled to the guide pin housing to form a fixed reference point of the cyclo speed reducer. Torque coupler is provided with a perpendicular arrangement type driving surface for connecting the housing to the stationary guide pin shaft. The hollow input shaft having a plurality of driven tab projecting in the axial direction for receiving the input torque from the motor rotor. The coupler is provided with a perpendicular arrangement type longitudinal contact surface pair for connection to a hollow output shaft on the motor rotor.