This paper advances a kind of micro electromagnet motor with low rotational speed and high torque output: top face sway micro electromagnet motor. It's working principle is as following: under the rotating electromagnet's force

the motor's cone shape rotor makes pure rolling on the inner cone face of the stator and thus the output axle's rotation comes into being. Through testing

it's rotation ranges is 20-860rpm with larger than 10μNm torque output. The result of the experiment show that with the same input power

this kind of micromotor has larger torque output than others' with the same volume. It has a wide application prospect.