Drilling General purpose GMCast ironKMCounterboring FTP MagicDrill DRA Flanged shank SF Spare parts Clamp screw Description Wrench Description Tightening torque (N·m) HS-2524TRP FTP-5 0.5 HS-2534TRP DTP-6 0.8 DTP HS-3048TRP HS-4067TRP DTP-7 1.2 FTP Recommended cutting conditions General purpose GM / Cast iron KM Recommended insert Workpiece grades / Vc n (min-1) Drill dia. DC (mm) material (m/min) PR1535 PR1525 f (mm/rev) ø8 ø11 ø14 ø18 ø22 ø25 n (min-1) 3,980 - 7,160 2,890 - 5,210 2,270 - 4,090 1,770 - 3,180 1,450 - 2,600 1,270 - 2,290 Low carbon steel 100 - 180 100 - 180 f (mm/rev) 0.12 - 0.24 0.12 - 0.31 0.16 - 0.36 0.16 - 0.4 0.2 - 0.45 0.2 - 0.45 n (min-1) 3,980 - 5,970 2,890 - 4,340 2,270 - 3,410 1,770 - 2,650 1,450 - 2,170 1,270 - 1,910 Carbon steel 100 - 150 100 - 150 f (mm/rev) 0.12 - 0.24 0.12 - 0.31 0.16 - 0.36 0.16 - 0.4 0.2 - 0.45 0.2 - 0.45 n (min-1) 2,790 - 4,780 2,030 - 3,470 1,590 - 2,730 1,240 - 2,120 1,010 - 1,740 890 - 1,530 Alloy steel 70 - 120 70 - 120 f (mm/rev) 0.12 - 0.24 0.12 - 0.31 0.16 - 0.36 0.16 - 0.4 0.2 - 0.45 0.2 - 0.45 n (min-1) 1,990 - 3,580 1,450 - 2,600 1,140 - 2,050 880 - 1,590 720 - 1,300 640 - 1,150 Mold steel 50 - 90 50 - 90 f (mm/rev) 0.08 - 0.17 0.08 - 0.22 0.11 - 0.25 0.11 - 0.28 0.14 - 0.32 0.14 - 0.32 K n (min-1) 1,590 - 2,790 1,160 - 2,030 910 - 1,590 710 - 1,240 580 - 1,010 510 - 890Stainless steel40 - 7040 - 70f (mm/rev)0.1 - 0.240.1 - 0.240.12 - 0.30.15 - 0.30.15 - 0.30.15 - 0.35 *Feed rate 0.15 mm/rev or less is recommended until drilling depth reaches 0.5 x DC n (min-1) 3,580 - 6,760 2,600 - 4,920 2,050 - 3,870 1,590 - 3,010 1,300 - 2,460 1,150 - 2,170 Gray cast iron 90 - 170 90 - 170 f (mm/rev) 0.14 - 0.29 0.14 - 0.37 0.19 - 0.43 0.19 - 0.45 0.24 - 0.45 0.24 - 0.45 n (min-1) 1,590 - 4,780 1,160 - 3,470 910 - 2,730 710 - 2,120 580 - 1,740 510 - 1,530 Nodular cast iron 40 - 120 40 - 120 f (mm/rev) 0.12 - 0.24 0.12 - 0.31 0.16 - 0.36 0.16 - 0.4 0.2 - 0.45 0.2 - 0.45 n (min-1) 3,580 - 6,760 2,600 - 4,920 2,050 - 3,870 1,590 - 3,010 1,300 - 2,460 1,150 - 2,170 Gray cast iron - 90 - 170 f (mm/rev) 0.17 - 0.35 0.19 - 0.42 0.23 - 0.53 0.25 - 0.60 0.32 - 0.60 0.32 - 0.60 n (min-1) 1,590 - 4,780 1,160 - 3,470 910 - 2,730 710 - 2,120 580 - 1,740 510 - 1,530 Nodular cast iron - 40 - 120 f (mm/rev) 0.12 - 0.24 0.17 - 0.36 0.21 - 0.48 0.24 - 0.60 0.27 - 0.60 0.27 - 0.60 Recommended cutting conditions above is for 1.5D/3D type. As drilling depth increases (1.5D/3D 5D 8D 12D), feed rates should be reduced. Recommended feed rate : 1.5/3D type=100%, 5D type=80% or less :1st recommendation :2nd recommendation Recommended cutting speed and feed rate: 8D type=80% or less, 12D type=70% or less General Purpose GM. Counterboring FTP Recommended insert Workpiece grades / Vc n (min-1) Drill dia. DC (mm) material (m/min) PR1535 PR1525 f (mm/rev) ø8 ø11 ø14 ø18 ø22 ø25 n (min-1) 3,150 - 6,000 2,300 - 4,350 1,800 - 3,400 1,400 - 2,650 1,150 - 2,200 1,000 - 1,900 Low carbon steel 80 - 150 80 - 150 f (mm/rev) 0.12 - 0.24 0.12 - 0.31 0.16 - 0.36 0.16 - 0.40 0.20 - 0.45 0.20 - 0.45 n (min-1) 3,150 - 4,750 2,300 - 3,450 1,800 - 2,700 1,400 - 2,100 1,150 - 1,750 1,000 - 1,500 Carbon steel 80 - 120 80 - 120 f (mm/rev) 0.12 - 0.24 0.12 - 0.31 0.16 - 0.36 0.16 - 0.40 0.20 - 0.45 0.20 - 0.45 n (min-1) 2,800 - 4,750 2,000 - 3,450 1,600 - 2,700 1,250 - 2,100 1,000 - 1,750 900 - 1,500 Alloy steel 70 - 120 70 - 120 f (mm/rev) 0.12 - 0.24 0.12 - 0.31 0.16 - 0.36 0.16 - 0.40 0.20 - 0.40 0.20 - 0.45 n (min-1) 1,600 - 2,800 1,150 - 2,000 900 - 1,600 700 - 1,250 600 - 1,000 500 - 900 Mold steel 40 - 70 40 - 70 f (mm/rev) 0.08 - 0.17 0.08 - 0.22 0.11 - 0.25 0.11 - 0.28 0.14 - 0.30 0.14 - 0.32 n (min-1) 1,600 - 2,800 1,150 - 2,000 900 - 1,600 700 - 1,250 600 - 1,000 500 - 900 Stainless steel 40 - 70 40 - 70 f (mm/rev) 0.10 - 0.20 0.10 - 0.20 0.10 - 0.24 0.15 - 0.24 0.15 - 0.24 0.15 - 0.28 *Feed rate 0.15 mm/rev or less is recommended until drilling depth reaches 0.5 x DC n (min-1) 2,800 - 5,600 2,000 - 4,050 1,600 - 3,200 1,250 - 2,500 1,000 - 2,000 900 - 1,800 Gray cast iron 70 - 140 70 - 140 f (mm/rev) 0.14 - 0.29 0.14 - 0.37 0.19 - 0.43 0.19 - 0.45 0.24 - 0.45 0.24 - 0.45 n (min-1) 1,600 - 4,000 1,150 - 2,900 900 - 2,750 700 - 1,750 600 - 1,450 500 - 1,250 Nodular cast iron 40 - 100 40 - 100 f (mm/rev) 0.12 - 0.24 0.12 - 0.31 0.16 - 0.36 0.16 - 0.40 0.2 - 0.45 0.2 - 0.45 * The recommended cutting conditions are for drilling on plain surfaceThe conditions for drilling on slant hole shows the depth from the top of workpiece :1st recommendation :2nd recommendation Set the feed rate 50% or under when inclination angle is 30 or under. Set the feed rate 30% or under when inclination angle is over 30° Traversing is not recommented. Applicable to 1.5D,3D,5D,8D and 12D holders. Prepared hole (0.5xDC) is needed when using 8D/12D holder K26