Simple device with external oil filling hole for bearing seat

The utility model discloses an external simple device for an oil filling hole of a bearing seat. The external simple device comprises the bearing seat and a quick connector A, a bearing is fixed to one side of the bearing seat through a screw, an air source pipe for conveying lubricating oil is fixed to one side of the quick connector A through a screw, an oil filling hole allowing the lubricating oil to enter the bearing is formed in the surface of the air source pipe, and a quick connector B making contact with the dustproof cap is fixed to the end, away from the quick connector A, of the air source pipe through a screw. Through the arrangement of the air source pipe, the quick connector A, the quick connector B, the oil filling hole and the dustproof cap, the problems that when an existing bearing seat oil filling hole external simple device is used, oil filling and lubricating work on equipment is inconvenient, the lubricating effect of the equipment cannot be improved, and meanwhile the lubricating porti