Centrafugal and mechanical double function bearing capable of internal and external placing

The utility model relates to a magnetic-type centrafugal and mechanical double function oil seal capable of being internally and externally placed. A stator ring, an O-shaped ring and a magnetic ring are adsorbed on the inner or the outer surface of a sealing gland; in a centrifugal protective cover which is mutually attracted with the magnetic ring, a rotor ring seat respectively forms interference fits with the stator ring and the centrifugal protective cover and is driven to rotate along with a shaft under the friction of the rotor ring and the O-shaped ring; the rotor ring and the stator ring are placed in a seal cavity composed of the magnetic ring, the centrifugal protective cover and a clearance adjustment pad, and a gear-shaped or spiral centrifuge blade is processed on the end surface of the centrifugal protective cover; when the centrifuge blade is rotated along with the shaft, oil or air around the rotor ring and the stator ring can be thrown out; in a built-in type structure, the utility model plays a centrifugal seal effect, and in an externally placed type structure, the utility model plays the effect of exhausting frictional heat; no matter whether used in the built-in type structure or in the externally placed type structure, the utility model also plays the effect of protecting the rotor ring and the stator ring from being damaged by dust particles. The utility model has the dual seal effect of mechanical seal and centrifugal seal, and solves the problems of protecting a sealing surface and discharging the frictional heat in the built-in type structure and in the externally placed type structure.