PROBLEM TO BE SOLVED: To provide a motor with a reduction gear which is reduced in a cost and thinned in a thickness by reducing an influence of the internal moment acting on an output member without using an expensive bearing, and elongated in a life of the bearing.;SOLUTION: In a motor with a reduction gear having an electric motor M in which a gear mechanism is decelerated and rotated with an eccentric shaft 8 which is rotationally driven by the electric motor M as a center, and outputting power, a plurality of outer gears 9, 10 are assembled to the eccentric shaft 8 in a position in which the moments which are obtained by multiplying an axial distance from a position of a bearing 12 arranged at a reduction gear housing 5 and a load acting on an output pin 14 in the position are canceled with respect to each other.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2019,JPO&INPIT
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