To provide an arrangement structure for bearings which overlap in the axial direction. A driven shaft and an intermediate shaft are linked to each other and are disposed to be substantially parallel with respect to each other. The driven shaft and the intermediate shaft are rotatably supported via the radial ball bearings, respectively with the respective radial ball bearings being disposed so as to overlap partly with each other in an axial view. An inner wall portion for supporting the respective radial ball bearings is provided with the respective radial ball bearings being mounted to the inner wall portion substantially in the same direction.