Oil mist lubrication cooling structure suitable for high-efficiency cost-ratio engine bearing

The invention discloses an oil mist lubricating and cooling structure suitable for a high-efficiency-cost-ratio engine bearing, relates to the technical field of engines, and aims to solve the problem that the service life is affected due to the fact that the temperature is too high when the bearing rotates at a high speed, and the oil mist lubricating and cooling structure suitable for the high-efficiency-cost-ratio engine bearing comprises a rotating shaft. A first disc body and a second disc body are arranged on the rotating shaft, a centrifugal impeller is connected to the first disc body, a fan impeller is arranged on the second disc body, a bearing is arranged outside the rotating shaft in a sleeving mode, and a flow guide cone and an air inlet flow guide supporting plate are arranged outside the driving motor. A first oil channel and a second oil channel are formed in the air inlet flow guide supporting plate and the flow guide cone respectively, a straight air channel is formed in the rotating shaft,