USER GUIDE Gundrill Recommended Machining Conditions Feed vs. mm/rev Drill Diameter mm Mtl. Cutting Speed 2.0-9.79 9.8-11.69 11.7-13.19 13.2-16.19 16.2-40 No. vc m/min 1 70-110 2 80-110 3 70-100 0.01-0.03 0.03-0.05 0.035-0.06 0.04-0.07 0.02-0.10 4 70-110 5 70-90 6 80-110 7 70-110 0.01-0.03 0.03-0.05 0.035-0.06 0.04-0.07 0.02-0.10 8 60-90 9 50-80 10 50-70 0.01-0.03 0.025-0.04 0.03-0.045 0.035-0.05 0.12-0.10 11 12 40-70 0.01-0.03 0.025-0.04 0.03-0.045 0.035-0.05 0.12-0.10 13 14 40-80 0.01-0.03 0.025-0.04 0.03-0.045 0.035-0.05 0.02-0.10 15 70-100 16 70-100 17 80-110 0.01-0.40 0.04-0.1 0.05-0.12 0.06-0.14 0.05-0.20 18 80-110 19 90-115 20 90-115 21 22 80-160 23 0.02-0.04 0.03-0.17 0.03-0.18 0.035-0.19 0.03-0.15 24 25 80-120 26 27 28 80-180 0.02-0.04 0.02-0.13 0.03-0.16 0.04-0.18 0.03-0.15 29 30 GUNDRILLS 31 32 33 34 0.01-0.03 0.025-0.03 0.03-0.035 0.03-0.04 0.02-0.10 35 36 25-60 37 38 20-50 0.025-0.03 0.03-0.035 0.03-0.04 39 0.01-0.03 0.02-0.10 40 41 673