| 摘要 |
PROBLEM TO BE SOLVED: To provide a planetary gear reduction device which reinforces a fatigue strength of a root part with a flange body of a pin member, in the planetary gear reduction device in which the pin member penetrating an outer tooth gear is integrally protruded and formed from the flange body.SOLUTION: A planetary gear reduction device G1 includes: an external tooth gear 11; an internal tooth gear 16 which is inscribed and meshes with the external tooth gear 11; a first flange body 41 arranged on a lateral part in the axial direction of the external tooth gear 11; and an inner pin (pin member) 54 which are integrally protruded and formed in the axial direction from the first flange body 41 and penetrate the external tooth gear 11 and an inner roller 58 and, therein, plastic processing is performed on a root part 54 P1 of the pin member 54. |
