Torque [Nm]Torque [Nm]Torque [Nm] Indexable Drills Torque Requirement „Torque Requirement Steel 4140 500 450 f = 0.25 400 350 f = 0.20 300 250 f = 0.16 200 150 f = 0.12 100 50 0 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 Drill Diameter D1 (mm) Stainless Steel 304 500 f = 0.20 450 f = 0.18 400 350 f = 0.15 300 250 f = 0.12 200 150 100 50 0 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 Drill Diameter D1 (mm) Cast Iron GG25 500 450 400 350 300 f = 0.25 250 200 f = 0.20 150 f = 0.16 100 f = 0.12 50 0 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 Drill Diameter D1 (mm) widia.com V39