FIELD: machining of workpieces. SUBSTANCE: the device body accommodates an arbor with a bearing mounted on it, it has also two grooves connected with the bearing. These grooves are used to feed oil under constant pressure, whose value is selected depending on the required precision of machinery. Each groove is made symmetrical with an angle of contact of 90 deg., and arranged processing from the position of its axis of symmetry in the plane passing through the tool nose. EFFECT: enhanced precision of workpiece machining due to enhanced precision of arbor rotation. 1 dwg
