Design for frameless cartridge motors

The invention claims a column type motor, comprising: Shell; Connected with the housing; statorA stator is share one common central shaft; rotorIs connected to the rotor shaft along the common central shaft; A wherein the rotor locking to the shell during transit, wherein between the rotor and fixing portion of the pneumoelectric gap; fastenersConnected to the flexible shaft; And the feedback, wherein the feedback is fixed; the flexible and feedback rotor and feedback stator, a bearing arranged between the feedback rotor and feedback fixing portion, thereby, wherein the flexible to licence, a shaft with axially and radial direction and adjusting control three-coordinate mechanism, simultaneously of rotating aims.