FIELD: woodworking industry. SUBSTANCE: two circular grooves with coverage angle of 90 deg are made in spindle assembly body. They are positioned with their axes symmetrically in perpendicular direction of blank feed. Depending on desired quality of working pressure value of oil supplied from hydraulic station to grooves is set by reducing valve. Oil supplied to two circular grooves exerts pressure on outer race of bearing, thus creating additional local interference, which causes contraction of spindle axis trajectory in direction perpendicular to blank feed. As a result, quality of surface working is improved. Pressure value of oil supplied to grooves must be limited by value at which increased interference starts to reduce durability. EFFECT: improved quality of milling. 2 dwg
