MagicDrill DRX DRX Recommended Cutting Conditions (Coolant) Recommended Insert Grades (Cutting Speed Vc:m/min) Drill type Workpiece MEGACOAT Carbide Drill Dia. Material PR1230 PR1225 PR1210 GW15 φDc 2D~3D 4D 5D GM (mm) SM GM SM f (mm/rev) GH GM GH SM GM GH SM GM GH SM φ12~φ15 0.06~0.10 0.06~0.10 0.04~0.10 0.05~0.08 0.05~0.08 0.04~0.08 0.04~0.07 0.04~0.07 0.04~0.08 Low Carbon ☆ ★ φ15.5~φ18 0.06~0.12 0.06~0.12 0.06~0.12 0.05~0.10 0.05~0.10 0.05~0.10 0.05~0.08 0.05~0.08 0.04~0.09 Steel 120-240 120-240 φ18.5~φ26 0.08~0.14 0.08~0.14 0.06~0.14 0.06~0.12 0.08~0.12 0.05~0.12 0.06~0.10 0.06~0.10 0.04~0.10 φ26.5~φ60 0.08~0.14 0.08~0.14 0.06~0.14 0.06~0.12 0.08~0.12 0.05~0.12 0.06~0.10 0.06~0.10 0.04~0.10 φ12~φ15 0.04~0.14 0.04~0.14 0.04~0.10 0.04~0.10 0.04~0.10 0.04~0.08 0.04~0.08 0.04~0.08 0.04~0.07 Carbon Steel ★ ☆ φ15.5~φ18 0.06~0.16 0.06~0.16 0.06~0.12 0.05~0.12 0.05~0.12 0.05~0.10 0.05~0.10 0.05~0.10 0.05~0.08 100-180 100-180 φ18.5~φ26 0.08~0.20 0.08~0.20 0.06~0.14 0.07~0.16 0.07~0.16 0.05~0.12 0.06~0.12 0.06~0.12 0.05~0.10 φ26.5~φ60 0.08~0.20 0.08~0.20 0.06~0.14 0.07~0.16 0.07~0.16 0.05~0.12 0.06~0.12 0.06~0.12 0.05~0.10 φ12~φ15 0.04~0.14 0.04~0.14 0.04~0.10 0.04~0.10 0.04~0.10 0.04~0.08 0.04~0.08 0.04~0.08 0.04~0.07 Alloy Steel ★ ☆ φ15.5~φ18 0.06~0.16 0.06~0.16 0.06~0.12 0.05~0.12 0.05~0.12 0.05~0.10 0.05~0.10 0.05~0.10 0.05~0.08 100-160 100-160 φ18.5~φ26 0.08~0.20 0.08~0.20 0.06~0.14 0.07~0.16 0.07~0.16 0.05~0.12 0.06~0.12 0.06~0.12 0.05~0.10 φ26.5~φ60 0.08~0.20 0.08~0.20 0.06~0.14 0.07~0.16 0.07~0.16 0.05~0.12 0.06~0.12 0.06~0.12 0.05~0.10 φ12~φ15 0.04~0.08 0.04~0.08 0.04~0.08 0.04~0.07 0.04~0.07 0.04~0.07 0.04~0.06 0.04~0.06 0.04~0.06 Mold Steel ★ ☆ φ15.5~φ18 0.06~0.12 0.06~0.12 0.06~0.10 0.05~0.10 0.05~0.10 0.05~0.08 0.04~0.08 0.04~0.08 0.04~0.07 80-150 80-150 φ18.5~φ26 0.08~0.15 0.08~0.15 0.06~0.12 0.06~0.12 0.06~0.12 0.06~0.10 0.05~0.10 0.05~0.10 0.05~0.08 φ26.5~φ60 0.08~0.15 0.08~0.15 0.06~0.12 0.06~0.12 0.06~0.12 0.06~0.10 0.05~0.10 0.05~0.10 0.05~0.08 φ12~φ15 0.06~0.10 0.06~0.10 0.04~0.10 0.05~0.08 0.05~0.08 0.04~0.08 0.04~0.07 0.04~0.08 0.04~0.08 Stainless ☆ ★ φ15.5~φ18 0.06~0.10 0.06~0.10 0.06~0.12 0.05~0.08 0.05~0.08 0.05~0.11 0.04~0.07 0.04~0.07 0.04~0.10 Steel 70-140 70-140 φ18.5~φ26 0.08~0.12 0.08~0.12 0.06~0.14 0.07~0.10 0.07~0.10 0.06~0.12 0.07~0.10 0.07~0.10 0.06~0.12 (Austenitic related) φ26.5~φ60 0.08~0.12 0.08~0.12 0.06~0.14 0.07~0.10 0.07~0.10 0.06~0.12 0.07~0.10 0.07~0.10 0.06~0.12 φ12~φ15 0.08~0.14 - - 0.06~0.12 - - 0.04~0.10 - - K Gray Cast ★ φ15.5~φ18 0.08~0.18 - - 0.08~0.16 - - 0.06~0.12 - - Iron 100-150 φ18.5~φ26 0.08~0.20 - - 0.08~0.18 - - 0.06~0.14 - - φ26.5~φ60 0.08~0.20 - - 0.08~0.18 - - 0.06~0.14 - - φ12~φ15 0.08~0.12 - - 0.06~0.10 - - 0.04~0.08 - - Nodular ★ φ15.5~φ18 0.08~0.16 - - 0.08~0.14 - - 0.06~0.10 - - Drilling Cast Iron 80-120 φ18.5~φ26 0.08~0.18 - - 0.08~0.16 - - 0.06~0.12 - - φ26.5~φ60 0.08~0.18 - - 0.08~0.16 - - 0.06~0.12 - - φ12~φ15 - - 0.06~0.12 - - 0.05~0.10 - - 0.04~0.08 Non-ferrous ★ φ15.5~φ18 - - 0.08~0.14 - - 0.06~0.12 - - 0.05~0.10 DRA Metals 200-600 φ18.5~φ26 - - 0.08~0.16 - - 0.06~0.14 - - 0.05~0.12 φ26.5~φ60 - - 0.08~0.20 - - 0.08~0.16 - - 0.07~0.14 DRC φ12~φ15 - - 0.05~0.08 - - 0.04~0.07 - - 0.04~0.06 Titanium ★ φ15.5~φ18 - - 0.05~0.08 - - 0.04~0.07 - - 0.04~0.06 DRX Alloys 40-70 φ18.5~φ26 - - 0.06~0.10 - - 0.06~0.08 - - 0.05~0.07 φ26.5~φ60 - - 0.06~0.10 - - 0.06~0.08 - - 0.05~0.07 DRS ★ : 1st Recommendation ☆ : 2nd Recommendation · Apply a sufficient amount of coolant. DRZ Cutting Conditions by Application DRW Applications Plain Surface Slant Surface Half Cylindrical Hole Expansion Concave Surface Cored Hole* Stacked Plates Fine Micro Shape of Workpiece Cutting Speed (m/min) 120 120 120 120 120 120 Not Available DRX f (mm/rev) 0.1 0.05 0.05 0.05 Concave Surface 0.05 0.05 Not Available Continuous Part 0.1 Coolant (Internal) Yes Yes Yes Yes Yes Yes Not Available * Cutting width (Torus-shaped part) when drilling cored hole. Drill type 2D~3D 4D 5D Cutting width (Torus-shaped part) 0.1×Dc or less Less than corner radius Not recommended Max. Depth for Drilling with External Coolant In case of using external coolant system, chip evacuation will be bad. Therefore ap should be measured within 1.5 times (1.5×Dc) of drill diameter (φDc). K48