PURPOSE: A rotary actuator is provided to prevent a magnet from being separated due to the rotation of a rotor by fixing and attaching a magnet to a stator. CONSTITUTION: A yoke(111) has a disk shape. A stator core is arranged in a columnar direction with a preset space. A stator coil(112) is wound around each stator core. A core shoe has a fan shape. A stator(110) has a magnet with a pair of N and S poles. A rotor body unit(121) has a disk shape and is arranged in an axial direction. A rotor(120) is protruded to the magnet with a preset height.
