FIELD: mechanical engineering. SUBSTANCE: tool-holder unit has removable injector unit and hole in injector head is connected with hole in tool-holder. Injector unit is installed so that stream of cooling liquid is directed at angle relative to front surface of working edge of cutter in plane which is perpendicular to axis of rotation of article with ensuring lubrication and cooling of front surface of cutter and removing shavings from any side surface of cutter. Injector unit has means for adjusting angle of stream and its trajectory. Adjusting means has locking device for fixing threaded base of injector unit at preselected depth and at selected angular orientation with relation to tool-holder body. EFFECT: high efficiency. 3 cl, 7 dwg
