A linear motor includes a motor movable body which has symmetrical structure with respect to a vertical plane and a horizontal plane that include the motor center axis line. Two linear bearings disposed in a space on the inner side of a rectangular tubular movable coil of the motor movable body are disposed symmetrically to the left and right of the center axis line so that the bearing support center coincides with the motor center axis line. Thrust generation sections of the motor movable body are disposed symmetrically above and below the motor center axis line, so that the thrust center coincides with the motor center axis line. Since the center of gravity of the motor movable body, the thrust center and the bearing support center coincide with the motor center axis line, a high responsive liner motor can be realized with no decrease in the thrust/movable body mass ratio.