An actuator gripping device which prevents the actuator of the head support device from serious trouble such as damage to the surface of the recording medium due to external shocks. An actuator 7 comprises actuator sub-unit 27 having a tab 8 at one end and provided with a head 9, and a voice coil 10 mounted at the other end, a pivot pedestal 30 with a pair of abutments, and a spring plate 28 having an activating force to push the head 9 toward the recording medium 4, and that the actuator gripping device for gripping the actuator 7 comprises a ramp 14 formed with the first stepped side surface 14d and the second stepped side surface 14f having a specified angle respectively at either side of the second plane 14e on which the tab 8 is abutted at the shunt position in stop mode of the recording medium 4.