USER GUIDE 4 3 INDEXABLE DRILLS 1 2 5 Mounting Instructions 1. Insert the chamfer ring on the drill body and slide to the desired position(1). NO 2. Rotate the ring clockwise until the stopper SETUP engages the flute edge. 3. Tighten the ring screw according to the TIME! maximum tightening torque indicated on page 546. 4. Mount the chamfer insert. 5. Mount the CHAMDRILL head. Min. 1 mm Chamfer Ring Position Range Drill Body Drill Body Maximum Drill 3xD 5xD Chamfer Diameter L (min-max) L (min-max) Size 10 8-16 15-36 10.5 8-18 17-39 11 8-19 18-41 11.5 8-21 20-44 12 8-22 21-46 Min. 1 mm 12.5 8-24 23-49 1.5 13 8-25 24-51 13.5 8-27 26-54 14 9-29 28-57 14.5 9-30 29-60 15 9-31 30-60 16 9-33 32-65 17 11-35 34-69 18 11-38 34-74 2.0 19 11-42 41-80 20 11-45 44-85 User Guide Recommendations for better stability: 1. Use 3xD drill instead of 5xD, if possible. 2. Mount the chamfer ring as close as possible 1mm (1) to the drill shank. 3. For better chamfering insert life, apply a L coolant to the chamfering insert, in addition to the internal and/or external coolant. 4. A wider gap “X” between the drill and the head size is preferred (i.e. for head 14.6 mm, use body of 14 mm rather than of 14.5 mm). A slightly larger “X” dimension can dramatically increase the chamfering insert life. (1) The “L” dimension shown is relative to the X common 1 mm chamfer. (maximize) 5 For other sizes, adjust “L” accordingly. 547 547 547