Cooling device for medical CT machine bearing

The invention discloses a medical CT machine bearing cooling device which comprises a bearing core, a circulation hole and a cooling inlet, the bearing core is arranged on the inner wall of a bearing outer sleeve, a spiral groove is formed in the outer wall of the bearing core through high-energy laser cutting, and the outer wall of the spiral groove is meshed with the inner wall of the bearing outer sleeve. A groove in the outer wall of the spiral groove is filled with a liquid metal lubricant, a bearing flange is arranged on the outer wall of the bearing outer sleeve, a boss is arranged on the outer wall of the bearing core, one end of the outer wall of the boss is matched with the adjacent end of the bearing flange, and a circulation hole is formed in the center of the interior of the bearing core. The heat dissipation structure used for actively cooling the bearing core is arranged on the inner wall of the bearing core, and the device is provided with the spiral pipeline, so that the contact area with the