This shaft coupling structure is provided with a shaft, a sleeve into which the shaft is inserted, and a tolerance ring. The tolerance ring includes a cylindrical body and multiple raised sections that are raised outwardly in the radial direction from the inner circumferential surface of the body, and is fitted between the outer circumferential surface of the shaft and the inner circumferential surface of the sleeve. A connecting path that connects the inside and the outside of the raised sections to each other is provided between the outer circumferential surface of the shaft and the body.
