PROBLEM TO BE SOLVED: To obtain a working machine advantageous in terms of an expense and weight, with a pair of left and right drive-type wheels steered by an actuator by making a wheel drive case having a beveled gear mechanism for left and right wheels easily acquired, and by making steering failures of the left and right wheels hardly occur.SOLUTION: A working machine comprises: a rotation transmission shaft 20 for a left wheel which is coaxial with a steering axial core P of the left wheel a rotation transmission shaft 20 for a right wheel which is coaxial with a steering axial core P of the right wheel transmission shaft transmission mechanisms 40, 41 which transmit drive forces the transmission shafts 20 and rotation adjustment transmission parts 43 which are provided at the transmission shaft transmission mechanisms 40, 41 and reverse a rotation direction of the rotation transmission shaft 20 for the left wheel and a rotation direction of the rotation transmission shaft 20 for the right wheel reverse. The working machine also comprises an electric steering motor which is connected to a steering operation part of a pair of the left and right wheels so as to be in conjunction therewith, and steers the pair of the left and right wheels.
