to a lower side of the supporting plate 12 and having a predetermined length and dampers 28 connected between the lower supporting rods 26 and a lower inner wall of the cabinet 2 for absorbing vibration herein the buffering springs 24 and the dampers 28 are installed at a center of gravity of an assembly composed of the drum 6 the supporting plate 12 and the driving motor 8 that is the upper and lower supporting rods 22 and 26 are prolonged from the supporting plate 12 to the center of gravity of the assembly the buffering springs 24 are connected between an end portion of the upper supporting rod 22 and the upper inner wall of the cabinet 2 and the dampers 28 are connected between an end portion of the lower supporting rod 26 and the lower inner wall of the cabinet 2 thereby supporting the drum 6 at the center of gravity a diameter of the drum 6 is installed in a range that the drum 6 is not contacted to the tub 4 even when the drum 6 generates maximum vibration in order to prevent interference with the tub 4 at the time of being rotated in the tub 4 operations of the drum type washing machine according to the present invention are as follows if the laundry is inputted into the drum 6 and a power switch is turned on washing water is introduced into the tub 6 at this time the front side of the.