| 摘要 |
In a planetary bearing structure equipped with a slide bearing mounted to a shaft hole of a planetary gear, the planetary gear rotating about the outer periphery of a planetary pin fixed to a carrier via the slide bearing, one or a plurality of oil supply grooves are formed in the outer peripheral surface of the planetary pin so as to extend in the axial direction. An oil supply port of a lubricant oil channel opens in the oil supply groove so as to forcedly supply lubricant oil. Furthermore, a discharge groove for trapping foreign matter, which is shallower than the oil supply groove, communicates from the oil supply groove to the wake flow side in the rotating direction of the planetary gear.
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