Double-row tapered roller bearing sealing performance detection tool

The utility model belongs to the technical field of bearing detection, and particularly relates to a double-row tapered roller bearing sealing performance detection tool which comprises an upper end cover, a lower end cover and a pull rod connecting the upper end cover and the lower end cover. The upper end cover is matched with one end of the inner diameter of the bearing inner ring through an annular spigot, the lower end cover is matched with the other end of the inner diameter of the bearing inner ring through an annular spigot, the upper end cover, the lower end cover and the inner diameter of the bearing inner ring are enclosed to form a sealed cavity, and a pipe joint connected with an external air pipe is arranged on the upper end cover or the lower end cover. And the pipe joint is communicated to the sealing cavity. According to the detection tool, the upper end cover, the lower end cover and the inner diameter of the inner ring of the bearing are enclosed to form the sealed cavity, the air tightness