PURPOSE: A travel motor is provided to maintain fastening force of a nut ring and planetary gears securely by preventing releasing of a fastening member by rotation of a support plate and a lock plate. CONSTITUTION: A nut ring(500) is combined to one end of a fixing casing. One or more lock plates(600) are combined with one end of the fixing casing through multiple points by a fastening member. The lock plate pressures and supports one end of axial direction of the nut ring. An integrated support plate(700) is combined to rotation centers of the planetary gears by the fastening member respectively. The integrated support plate supports the planetary gears.
