The utility model relates to motor technical field especially a kind of shaftless permanent-
magnet motor rotor support.The utility model discloses a rotor
brake disc for cooperating with
brake device, the side of rotor
brake disc is fixed with cylindrical adapter section, the end surface of adapter section is fixed with first ring plate, there is second ring plate between first ring plate and rotor brake disc, the outer
diameter of first ring plate and second ring plate is same, and the outer end surface of first ring plate and second ring plate is welded with magnetic pole mounting ring, and magnetic pole mounting ring is used to install magnetic pole.The shaftless permanent-
magnet motor rotor support is connected with the cooperation of brake rotor by rotor brake disc, its structure design includes cylindrical adapter section for transmitting torque and supporting rotor
assembly, first ring plate and second ring plate jointly constitute double-layer annular support structure to enhance overall stiffness, and through the design of same outer
diameter, ensure that stress is uniform.