GUNDRILLS USER GUIDE Wide Flute Angle • Smooth chip evacuation Brazed Body Large Oil Hole Steel Body Tool Flange • Efficient lubrication • Extremely high rigidity • Superior rigidity for • Longer life of inserts and guide pads • Simple direct mounting setup higher speeds and feeds Drilling Process on Machining Centersand Lathe Machines 1 Drill a 15 mm pilot hole flat bottom 1 Drill a 15 mm pilot hole D +0.05 +0.03 flat bottom 2 Set the TRIDEEP drill into the pilot hole (10 mm depth). Vc=5-10 m/min f=0.5-1.0 mm/rev 3 Initial cutting at a 25 mm DOC (80% feed rate), verify activated coolant (Vc=100%). 15 4 In case of through hole, drill the full hole to a depth of +5 mm. 5 Retract with slow rotation (5-10 m/min). 2 Slow rotation and feed while entering to the pre-hole 10 3 Maintain for 2-3 seconds and activate the cooling system 25 4 Drill +5mm depth through hole 5 289