MRX NEW ◆ Recommended Cutting Conditions Recommended Chipbreaker(fz:mm/t) Recommended Insert Grade(s Cutting Speed Vc:m/min) * RD**08 type: ap=2mm, RP**10 type: ap=2.5mm MEGACOAT NANO CVD Coated Workpiece Material RP**12 type: ap=3mm, RP**16 type: ap=4mm Carbide RDMT-GM RDGT-GM RDGT-SM RDMT-GH PR1535 PR1525 PR1510 CA6535 RPMT-GM RPGT-GM RPGT-SM RPMT-GH Carbon Steel ★0.1~0.2~0.3 ☆0.1~0.2~0.3 ☆0.06~0.15~0.2 ☆0.15~0.3~0.35 ☆120~180~250 ★120~180~250 - - Alloy Steel ★0.1~0.2~0.3 ☆0.1~0.2~0.3 ☆0.06~0.15~0.2 ☆0.15~0.3~0.35 ☆100~160~220 ★100~160~220 - - Mold Steel ★0.1~0.15~0.25 ☆0.1~0.15~0.25 ☆0.06~0.12~0.2 ☆0.15~0.2~0.3 ☆80~ 140~180 ★80~ 140~180 - - Stainless Steel (Austenitic related) ☆0.1~0.15~0.2 ☆0.1~0.15~0.2 ★0.06~0.12~0.2 ☆0.15~0.2~0.25 ★100~160~200 ☆100~160~200 - - Stainless Steel (Martensitic related) ☆0.1~0.15~0.2 ☆0.1~0.15~0.2 ★0.06~0.12~0.2 ☆0.15~0.2~0.25 ☆150~200~250 - - ★180~240~300 Stainless Steel (Precipitation Hardening) ☆0.1~0.15~0.2 ★0.1~0.15~0.2 ☆0.06~0.12~0.2 ☆0.15~0.2~0.25 ★90~120~150 - - - Gray Cast Iron ★0.1~0.2~0.3 ☆0.1~0.2~0.3 - ☆0.15~0.3~0.35 - - ★120~180~250 - Nodular Cast Iron ★0.1~0.15~0.25 ☆0.1~0.15~0.25 - ☆0.15~0.2~0.3 - - ★100~150~200 - Ni-base heat-resistant alloys ☆0.1~0.12~0.15 ★0.1~0.12~0.15 ☆0.06~0.1~0.15 ☆0.12~0.15~0.2 ☆20~30~50 - - ★20~30~50 Titanium Alloys ☆0.1~0.12~0.15 ☆0.1~0.12~0.15 ★0.06~0.1~0.15 - ★40~60~80 - ☆30~50~70 - * Machining with coolant is recommended for Ni-base heat-resistant alloys and titanium alloys. ★:1st Recommendation ☆:2nd Recommendation * RDGT/RPGT are recommended for stainless steel, Ni-base heat-resistant alloys and titanium alloy. * The bold-faced number indicates a center value of recommended cutting condition. Adjust the cutting speed and the feed rate within the above conditions according to the actual machining situation. * Recommended feed rate in the table is the reference value when ap is r/2. (2mm for RD**08 / 2.5mm for RP**10 / 3mm for RP**12 / 4mm for RP**16) For other ap, calculate the recommended feed rate based on the conversion factor below. * For MRX16-S16-08-2T(-160), MRX16-W-08-2T, MRX20-S20-10-2T(-180) and MRX20-W20-10-2T, set the feed rate not higher than 50% of the recommended cutting conditions. ■ Conversion factor for feed per tooth by depth of cut (ap) Insert Max. ap Conversion factor for feed per tooth fz ap=0.5mm ap=1mm ap=1.5mm ap=2mm ap=2.5mm ap=3mm ap=4mm ap=5mm ap=6mm ap=8mm RD**08 type (GM/SM/GH chipbreaker) 4mm 1.7 1.3 1.1 1 0.9 0.8 0.8 - - - (Standard) RP**10 type (GM/SM/GH chipbreaker) 5mm 1.9 1.4 1.2 1 1 0.9 0.8 0.8 - - (Standard) RP**12 type (GM/SM/GH chipbreaker) 6mm 2.1 1.5 1.3 1.1 1 1 0.9 0.8 0.8 - (Standard) RP**16 type (GM/SM/GH chipbreaker) 8mm 2.4 1.7 1.4 1.3 1.1 1.1 1 0.9 0.8 0.8 (Standard) M · Example (RPMT12 type, Carbon Steel, GM chipbreaker, ap=1mm) fz=0.2mm/t × 1.5 = fz=0.3mm/t (Reference value for carbon steel and GM chipbreaker) (Conversion factor for RP**12 type, ap=1mm) (Recommended feed rate) Milling ■ Recommended cutting conditions for Drilling / Ramping / Helical milling Tool spec. Max. ap Drilling Ramping Helical Milling Max. Cutting Depth Min. cutting length X Max. Max. Cutting Length L Min. Cutting Dia. Min. Cutting Dia. Max. Cutting Dia. Insert Tool Dia. ap Pd for flat bottom surface ramping angle tan αmax at Max. Ramping Angle φDh1 for flat bottom facing φDh3 αmax( ゚ ) φDh2 16 0.7 9 8 0.141 28 20 24 30 Inserts RD**08 type 20 4 13 9 0.158 25 26 32 38 25 1.4 18 5 0.087 45 36 42 48 Lead Angle 45°/20° 20 0.6 11 5 0.087 57 26 30 38 Lead Angle 25 16 10 0.176 28 33 40 48 15° 32 23 6 0.105 47 47 54 62 Lead Angle RP**10 type 40 5 1.9 31 4 0.070 71 63 70 78 0° 50 41 3 0.052 95 83 90 98 High Feed 63 54 2 0.035 143 109 116 124 Multi- 32 21 9 0.158 37 43 52 62 Function 40 29 5 0.087 68 59 68 78 Slot Mill RP**12 type 50 6 2.4 39 4 0.070 85 79 88 98 63 52 2 0.035 171 105 114 124 Ball-nose 80 69 139 148 158 Radius 100 89 1 0.017 343 179 188 198 Others 40 25 11 0.194 41 51 64 78 50 35 7 0.123 65 71 84 98 RP**16 type 63 8 3.4 48 4 0.070 114 97 110 124 80 65 3 0.052 152 131 144 158 100 85 2 0.035 229 171 184 198 125 110 1 0.017 458 221 234 248 * Above is the value considering the clearance 1mm between the tool body and the workpiece. Unit:mm M178