SHAFT MEMBER

To realize a technology that eliminates the need to significantly increase an amount of oil supplied to an internal space of a shaft member and can properly secure amounts of oil discharged from multiple hole parts even during high speed rotation.SOLUTION: A cross section area, orthogonal to a penetration direction, of a first hole part 41 is larger than that of a second hole part 42, and a supply part 3, the first hole part 41, and the second hole part 42 are sequentially disposed from the first side L1 to the second side L2. An internal space S1 is provided with a guide part 10. The guide part 10 includes: an introduction part 11 which introduces oil into a guide space S2; and a lead-out part 12 which leads out the oil to the outside of the guide space S2. The second hole part 42 is disposed at the upstream side of the first hole part 41 in oil flow discharged from the lead-out part 12 and flowing along an inner peripheral surface 2a of a cylindrical part 2.SELECTED DRAWING: Figure 2 【課題】軸部材の内部空間への油の供給量を大きく増大させる必要がなく、高回転時においても複数の孔部のそれぞれからの排出油量を適切に確保することが可能な技術を実現する。【解決手段】第一孔部４１は、貫通方向に直交する断面積が第二孔部４２よりも大きく、第一側Ｌ１から第二側Ｌ２に向かって順に、供給部３、第一孔部４１、及び第二孔部４２が配置される。内部空間Ｓ１に、案内部１０が設けられ、案内部１０は、油を案内空間Ｓ２に導入する導入部１１と、油を案内空間Ｓ２の外部に導出する導出部１２とを備える。導出部１２から出て筒状部２の内周面２ａに沿って流れる油の流れにおける第一孔部４１よりも上流側に、第二孔部４２が配置される。【選択図】図２