An optical pickup actuator including a coil, a first magnet, and a second magnet. At the end of the wire conveyor spindle an outflow opening is arranged. The insulator comprises accommodation portions which accommodate the respective contact pins. A first work chamber is formed on the side of the piston plate which faces away from the needle and a second work chamber that can be acted upon with a fluid in order to actuate the needle is formed on the opposite side of the piston plate.