L/D Basic Selection of Drilling To o l s Application ranges of drilling tools Indexable & Head-Changeable Drills 100 (Page J089) 50 25 15 (Page J028) (Page J010) 12 (Page J064) 8 (Page J056) 5 4 3 (Page J077) 2 67 12 14 16 20 22 26 28 30 39.1 40 41 50 54 60 70 80 Drill Diameter (mm) 2 Effective Drill Indexable Drill Deep Hole Drill Hole diameter tolerance* L/D Tool diameter Hole diametertolerance* L/D Tool diameter Hole diametertolerance* L/D Tool diameter Hole diametertolerance* ø20 - ø27 + 0.25 / 0 TID 1.5 ø6 - ø25.9 + 0.05 / 0 8 ø33.1 - ø39.1 + 0.05 / - 0.1 2 ø28 - ø54 + 0.3 / 0 TID 3 ø6 - ø25.9 + 0.05 / 0 10 ø16 - ø38.1 + 0.05 / - 0.1 ø20 - ø27 + 0.25 / 0 ø6 - ø17.9 + 0.06 / 0 15 ø12 - ø38.1 + 0.05 / - 0.1 3 TID 5 ø28 - ø54 + 0.3 / 0 ø18 - ø25.9 + 0.065 / 0 20 ø12 - ø15 + 0.05 / - 0.1 ø20 - ø27 + 0.3 / 0 ø7 - ø17.9 + 0.07 / 0 25 ø12 - ø38.1 + 0.05 / - 0.1 4 TID 8 ø28 - ø54 + 0.35 / 0 ø18 - ø25.9 + 0.085 / 0 *Just for reference ø8 - ø17.9 + 0.08 / 0 TID 12 ø18 - ø25.9 + 0.095 / 0 L/D Tool diameter Hole diametertolerance* TIDC 3 ø10 - ø19.9 + 0.05 / 0TIDC 5ø10 - ø19.9+ 0.05 / 0 ø12.5 - ø17 + 0.25 / 0 2 ø17.5 - ø54 + 0.3 / 0 ø12.5 - ø17 + 0.25 / 0 3 ø17.5 - ø54 + 0.3 / 0 L/D Tool diameter Hole diametertolerance* ø12.5 - ø17 + 0.4 / 04ø17.5 - ø54+ 0.45 / 0 ø26 - ø29.9 + 0.05 / 03ø30 - ø41+ 0.06 / 0 ø12.5 - ø17 + 0.4 / 0 ø26 - ø29.9 + 0.08 / 0 5 ø17.5 - ø54 + 0.45 / 0 5 ø30 - ø41 + 0.09 / 0 J004 www.tungaloy.com