The oil-free vacuum pump operates on the same principle as general volume pumps, consisting of main components such as the stator, rotor, vanes, cylinder, and motor. The rotor with vanes is eccentrically mounted within the stator cylinder. As the rotor rotates at high speed, the four radial sliding vanes within the rotor slots divide the pump chamber into four working chambers. Due to the centrifugal force, the vanes adhere to the cylinder wall, separating the intake and exhaust ports of the stator, and the process repeats, enabling variable volume. This draws in the gas and expels it through the exhaust port, achieving the purpose of vacuum extraction.