Planetary gear set

摘要: A planetary gear set, comprising a plurality of pinions (P1) and (P2) meshed with sun carrier (C) pivotally supporting the pinions, further an annular peripheral wall (12) surrounding all around outer periphery wherein thin-wall parts (12a) recessed on inner diameter side thereof are formed in at circumferential positions corresponding to disposed both end (1) (4) for one ends other connected each through axially extending bridge part (3), pinion is smaller than plate (32) extends outside direction carrier, whereby, since rigidity capable withstanding disposal large number pairs can be assured by continuity thin without increasing size interference avoided, durability gears increased load pair reduced.