FIELD: mechanical engineering; connecting devices for parts. SUBSTANCE: end nut is used for locking rigid detachable taper joint of female part with shaft; end nut includes profiled body 1 with central threaded hole 3 and supporting bead 2 provided with two circular cavities 4 and 5 connected with free end of nut by means of through holes 7 and 6. Each cavity 4 and 5 contains circular pistons 8 and 9 fitted with sealing members. In press fitting, working medium under pressure is fed to cavity 4 whose piston gets engageable with female part being fitted making it move along shaft in way fitting. For dismantling, working medium under pressure is fed to opposite cavity whose piston gets engageable with bearing ring of female part making it move in way of dismantling. EFFECT: enhanced reliability. 1 dwg
