Press fitting device for hub bearing outer ring

The utility model provides a press fitting device for a hub bearing outer ring. The press fitting device for the hub bearing outer ring comprises an upper press head mechanism, a lower press head mechanism and a lifting mechanism. The upper press head mechanism comprises a press machine main shaft and an upper press head, wherein the upper press head is connected to the lower end of the press machine main shaft, an upper outer ring is installed on the upper press head, and the upper press head and the upper outer ring are driven to ascend and descent along with the ascending and the descending of the press machine main shaft. The lower press head mechanism comprises a lower press head, wherein a lower outer ring is installed on the lower press head. The lifting mechanism comprises a lifting part and a supporting part, wherein the lifting part is connected with the supporting part to drive the supporting part to move between an initial position and a press fitting position. When the supporting part is located at the initial position, a hub is supported on the supporting part, the height of the lower press head and the height of the lower outer ring are smaller than the height of the hub, and the lower outer ring is not in contact with the hub. When the supporting part is located at the press fitting position, the hub descends to be in contact with the lower outer ring and descends along with the press machine main shaft, the upper outer ring is made to be pressed into the upper side of the hub, and the lower outer ring is pressed into the lower side of the hub.