Vibrating actuator having contact part with high abrasion resistance

A vibrating actuator comprising:

• a vibrating body that has an elastic body of an annular shape and an electro-mechanical energy conversion element;
• and
• a contact body of an annular shape configured to be in contact with the elastic body, wherein the vibrating body and the contact body are configured to move relative to each other by vibration of the vibrating body,
• wherein the contact body has, each being of an annular shape, a base part, a thin plate part, and a support part that are formed integrally, and further has a friction member of an annular shape and made of an iron-based material,
• wherein the thin plate part extends from the base part toward an annular center axis of the base part, the support part is disposed at an end of the thin plate part, and the friction member is a member disposed to the support part as a member separate from the support part and is in contact with the elastic body,
• wherein density of the friction member is higher than density of the thin plate part, and
• wherein a weight ratio obtained by dividing a weight of the thin plate part by a total weight of the friction member and the support part is 0.5 to 1.5.