Provided is a ball bearing motor, relating to the technical field of camera module lens driving devices. The ball bearing motor includes a movable portion, a fixed portion, a driving portion, and balls. Under the action of the driving portion, the movable portion is movable relative to the fixed portion. A first ball track groove body and a second ball track groove body are provided on the fixed portion and the movable portion, respectively. The balls are sandwiched between the first ball track groove body and the second ball track groove body and can roll in the first ball track groove body and the second ball track groove body when the movable portion moves relative to the fixed portion. At least one of the first ball track groove body and the second ball track groove body can provide buffering for the balls through elastic deformation.