INDEXABLE DRILLS USER GUIDE User Guide 1 A short pre-hole 20 mm long (minimum) with H8 hole tolerance should be prepared to guide the long drill (a standard DR drill or an endmill can be used). Option No.1 Option No.2 1.1 Penetration with an endmill 2.1 Penetration by drilling 1.2 Enlargement with the endmill 2.2 DRG-MF boring 3 Deep hole drilling with DR-DH 2 The DR-DH drill should enter into the pre-hole at slow rotation speed and with coolant supply. DR-DH Insert Mounting Configuration vs. Drill Diameter DR-DH ø##.# [mm] Central Insert Intermediate Insert Peripheral Insert Guiding Pad 25.4-28.5 SOMX 050204… SOMX 050204… SOMX 050204… GPS-06-20-075 28.6-30.0 SOMX 050204… SOMX 060304… SOMX 050204… GPS-07-20-120 30.1-33.0 SOMX 060304… SOMX 060304… SOMX 060304… GPS-07-20-120 33.1-37.5 SOMX 060304… SOMX 070305… SOMX 060304… GPS-08-25-155 37.6-40.5 SOMX 070305… SOMX 070305… SOMX 070305… GPS-08-25-155 40.6-42.9 SOMX 070305… SOMT 09T306… SOMX 070305… GPS-08-25-155 43.0-47.5 SOMT 09T306… SOMT 09T306… SOMT 09T306… GPS-08-25-155 47.6-51.0 SOMT 100408… SOMT 100408… SOMT 100408… GPS-10-30-200 51.1-54.0 SOMT 100408… SOMT 110408… SOMT 100408… GPS-10-30-200 54.1-57.4 SOMT 100408… SOMT 110408… SOMT 110408… GPS-10-30-200 57.5-61.0 SOMT 110408… SOMT 110408… SOMT 110408… GPS-14-40-250 61.1-63.0 SOMT 110408… SOMT 120408… SOMT 110408… GPS-14-40-250 63.1-69.5 SOMT 120408… SOMT 120408… SOMT 120408… GPS-14-40-250 Spare Parts Insert Screw Key Guiding Pad Clamping Screw Key SOMX 050204... SR 34-533/L T-6/51 GPS-06-20-075 SR 11201753-1 T-7 SOMX 060304... SR 34-508/L T-7/51 GPS-06-20-085 SR 11201753-1 T-7 SOMX 070305... SR 14-560 T-8/51 GPS-06-20-100 SR 11201753-1 T-7 SOMT 09T306... SR 34-506 T-9/51 GPS-14-40-250 SR 11201752-2 T-15 SOMT 100408... SR 14-571 T-10/51 GPS-07-20-120 SR 11201753-4 T-9 SOMT 110408... SR 14-544/S T-15/51 GPS-10-30-200 SR 11201753-6 T-15 SOMT 120408... SR 14-544/S T-15/51 132 ISCAR