Lightweight spindle motor

The invention relates to a spindle motor (1), which has a rotor (6) and a stator core (7), wherein the rotor (6) is disposed on a motor shaft (2) constructed coaxially with the rotor (6). The spindlemotor (1) also has a front end cover (3) and a rear end cover (4) supported on the front and rear ends of the motor shaft (2), respectively. The spindle motor (1) also has a casing (5) configured as ahollow cylinder and connected to the front end cover (3) and the rear end cover (4) at the front and rear ends, respectively. The stator core (7) is fixed to the inner wall of the casing (5) and is not rotatable relative to the inner wall of the casing (5). 本发明涉及一种主轴电机(1)，其具有转子(6)和定子铁芯(7)，其中，所述转子(6)套装在与其同轴地构造的电机轴(2)上，所述主轴电机(1)还具有分别支承在所述电机轴(2)前后两端上的前端盖(3)和后端盖(4)，其中，所述主轴电机(1)还具有机壳(5)，所述机壳(5)构造为空心筒状并且在前后两端分别与所述前端盖(3)和后端盖(4)连接，并且其中，所述定子铁芯(7)不可相对转动地固定在所述机壳(5)的内壁上。