Page 173 - Demo

171PRE-THREAD DRILLING WITH CHAMFERING CHAM-RING Assembly Instructions Steps: 1 Unscrew the CHAM-RING side locking and chamfering insert screws.2 Insert the proper UNI-CHAM-DRILLinto the CHAM-RING bore and push it against the back adjustment screw.3 Slightly tighten the side locking screw for initial contact with the UNI-CHAM-DRILL clamping surface.4 In order to achieve a symmetrical positioning of the chamfering inserts and to avoid edge fracturing, clamp the inserts gradually, alternating sides, before the final tightening. Ensure a tight clamping of the insert against the side walls of the UNI-CHAM-DRILLperipheral clearance guiding surfaces.5 Clamp the CHAM-RINGinside the drill%u2019s pocket.6 Lastly, tighten the side clamping screw.7 Clamp the required CHAM-DRILL head size into the UNI-CHAM-DRILL pocket.