<p>An oscillating actuator which comprises a coil-holding member and a carriage member comprising a bearing hole and one or more arms, wherein the arm has an intermediate portion and a head portion arranged in this order from the bearing hole in the carriage member and the intermediate portion has a thickness smaller than the thickness of the heat portion. The oscillating actuator is used for disk apparatuses, exhibits excellent dimensional stability and can be produced easily and economically. <IMAGE></p>
