FIELD: strengthening work of cylindrical surfaces. SUBSTANCE: device has a holder installed above the surface to be strengthened and made in the form of two semi-rings with nozzles- injectors for feeding liquid or gaseous energy carrier with shots. Bearing, glass or glass-fiber balls, as well as abrasive grains and sand, are used as shots. Cavities may be introduced in the energy carrier, and ultrasonic vibrations - in the nozzles-injectors. EFFECT: enhanced quality of shaft work. 9 cl, 2 dwg
