Stress releaser

The utility model relates to the technical field of stress releasers, in particular to a stress releaser, an upper rotating part is inserted above a round sleeve and fixedly connected through a threaded part, in the stress releasing process of a steel wire rope, the upper rotating part and the round sleeve cannot rotate relatively, the structure is stable and reliable, and safety is high; a groove A and a groove B are formed, and a screw is in threaded connection with the interior of a cavity defined by the groove A and the groove B, so that relative rotation of the nut and the pin shaft is avoided, and the overall stability and safety are further improved; by arranging the oil seal and the O-shaped sealing ring, a sealing cavity is formed in the round sleeve, dust is prevented from entering the round sleeve to affect normal operation of the bearing, oil can be injected into the round sleeve through the oil injection hole, the bearing is lubricated, the service life is prolonged, and two purposes are achieved