Abstract: A tolerance ring includes a cylindrical main body, which has an inner circumferential surface and an outer circumferential surface, and a plurality of protuberances, which protrudes outward in a radial direction from the inner circumferential surface of the main body. The main body includes a recess that extends from an end of the main body to at least one of the protuberances and communicates with an inside of the at least one of the protuberances.

Abstract: A shaft coupling structure includes a shaft, a sleeve, into which the shaft is inserted, and a tolerance ring. The tolerance ring includes a cylindrical main body and a plurality of protuberances, which protrudes outward in a radial direction from an inner circumferential surface of the main body. The tolerance ring is fitted between an outer circumferential surface of the shaft and an inner circumferential surface of the sleeve. A communication passage that connects an inside and an outside of each protuberance is provided between the outer circumferential surface of the shaft and the main body.

Abstract: A tolerance ring includes a cylindrical main body, which has an inner circumferential surface and an outer circumferential surface, and a plurality of protuberances, which protrudes outward in a radial direction from the inner circumferential surface of the main body. The main body includes a recess that extends from an end of the main body to at least one of the protuberances and communicates with an inside of the at least one of the protuberances.

Abstract: A shaft coupling structure includes a shaft, a sleeve, into which the shaft is inserted, and a tolerance ring. The tolerance ring includes a cylindrical main body and a plurality of protuberances, which protrudes outward in a radial direction from an inner circumferential surface of the main body. The tolerance ring is fitted between an outer circumferential surface of the shaft and an inner circumferential surface of the sleeve. A communication passage that connects an inside and an outside of each protuberance is provided between the outer circumferential surface of the shaft and the main body.

Abstract: A tolerance ring for a torque transmission device is arranged in an annular space between an inner shaft member and an outer shaft member. The tolerance ring has a ring-shaped portion and a plurality of protrusions. The ring-shaped portion has a cylindrical shape and is brought into contact with one of the shaft members. The plurality of protrusions undergo elastic deformation and are arranged in a peripheral direction. The ring-shaped portion has seat portions formed between the protrusions that are adjacent to each other in the peripheral direction. The plurality of protrusions include selected protrusions that have the same shape and that are situated at the same axial position and unselected protrusions other than the selected protrusions. The selected protrusions and the unselected protrusions differ from each other in axial position of center point in a length direction.