Abstract: Herein disclosed is a feed system which comprises: a moving body; a plurality of sets of support blocks arranged at the two sides of the moving body and along the moving direction of the moving body; a plurality of clamping members supported through elastically deformable members by the respective sets of the support blocks to engage with the sides of the moving body; clamping actuators mounted on the individual sets of the support blocks for displacing the clamping members toward the sides of the moving body to clamp the moving body; moving actuators mounted on the individual sets of the support blocks for displacing the clamping members in the moving direction of the movable member; and control means for operating the clamping actuators and the moving actuators with phases offset from each other.