Patent ID: 8636615

Claim:
A planetary gear train, comprising: a planetary gear; a planetary pin for supporting said planetary gear; a carrier for supporting said planetary pin; and a housing for accommodating at least a portion of said carrier, said planetary gear and said planetary pin, wherein said planetary gear is rotatable with respect to the planetary pin by a bearing; wherein an oiling flow path for supplying lubricant oil to said bearing is formed inside the carrier, wherein said carrier is configured to receive said lubricant oil into said oiling flow path from an oiling member stationarily fixed to said housing, wherein an inlet for receiving the lubricant oil into the oiling flow path of the carrier from the oiling member is positioned inside the housing, wherein said carrier includes: a carrier main body to which said planetary pin is fixed; and an extending member formed as a member distinct from said carrier main body and jointed with said carrier main body, wherein said inlet of the oiling flow path of the carrier is provided for said extending member, wherein a seal structure to be slid against said extending member is attached to said oiling member, wherein said extending member has a sliding surface configured to be slid against said seal structure, wherein said inlet of said oiling flow path of said carrier is provided through said sliding surface, and wherein said sliding surface is surface-processed to be smooth.