Recommended Cutting Conditions ■ 3RDSL, 4RDSL, 5RDSL (Shouldering) Applications Workpiece Material Depth of Cut Outside Dia. φ6 φ8 φ10 φ12 φ16 φ20 φ25 (ap×ae) (mm) Dc (mm) Spindle Revolution (min-1) 7,800 5,900 4,700 3,900 2,900 2,300 1,900 <22HRC 2.5Dc×0.5Dc Feed Rate (mm/min) 700 700 770 780 840 840 940 Spindle Revolution (min-1) 6,700 5,000 4,000 3,400 2,500 2,000 1,600 22~32HRC Feed Rate (mm/min) 500 500 600 600 600 640 720 Spindle Revolution (min-1) 4,500 3,400 2,700 2,200 1,700 1,300 1,100 Steel 32~40HRC 2.5Dc×0.4Dc Feed Rate (mm/min) 220 220 290 290 280 280 280 Spindle Revolution (min-1) 3,400 2,500 2,000 1,700 1,300 1,000 800 ap 40~45HRC Feed Rate (mm/min) 150 150 180 180 180 180 180 ae Spindle Revolution (min-1) 2,900 2,200 1,800 1,500 1,100 900 700 45~50HRC 2.5Dc×0.3Dc Shouldering Feed Rate (mm/min) 110 110 130 130 120 120 120 Spindle Revolution (min-1) 3,700 2,800 2,200 1,900 1,400 1,100 900 Stainless Steel 1.5Dc×0.1Dc Feed Rate (mm/min) 120 150 200 200 220 200 230 Spindle Revolution (min-1) 6,700 5,000 4,000 3,400 2,500 2,000 1,600 Cast Iron 2.5Dc×0.5Dc Feed Rate (mm/min) 600 600 720 720 720 770 970 * Machining with water soluble coolant is recommended for stainless steel. Slotting is not recommended. ■ 4RFSM, 6RFSM Depth of Cut Outside Dia. φ16 φ20 Applications Workpiece Material Application (ap×ae) (mm) Dc (mm) φ6 φ8 φ10 φ12 4 flutes 6 flutes 4 flutes 6 flutes φ25 Spindle Revolution (min-1) 8,000 6,000 4,800 4,000 3,000 3,000 2,400 2,400 1,900 Shouldering 1.5Dc×0.4Dc Feed Rate (mm/min) 630 630 630 640 640 900 640 930 800 L 35~45HRC Spindle Revolution (min-1) 6,400 4,800 3,800 3,200 2,400 2,400 1,900 1,900 1,500 Slotting 0.5Dc Feed Rate (mm/min) 480 480 490 500 500 720 500 750 640 Spindle Revolution (min-1) 5,800 4,400 3,500 2,900 2,200 2,200 1,800 1,800 1,400 Shouldering 1.5Dc×0.33Dc Feed Rate (mm/min) 350 350 350 350 350 530 350 530 460 Solid End Mill Steel 45~55HRC Spindle Revolution (min-1) 4,700 3,500 2,800 2,300 1,800 1,800 1,400 1,400 1,100 Slotting 0.5Dc Feed Rate (mm/min) 280 280 280 280 280 420 280 420 370 Spindle Revolution (min-1) 4,800 3,600 2,900 2,400 1,800 1,800 1,400 1,400 1,100 Shouldering 1.5Dc×0.25Dc Feed Rate (mm/min) 190 220 230 240 220 320 230 340 310 ap 55~60HRC Spindle Revolution (min-1) 3,800 2,900 2,300 1,900 1,400 1,400 1,100 1,100 900 Slotting 0.3Dc Feed Rate (mm/min) 150 170 180 180 180 260 180 280 250 ae Shouldering Spindle Revolution (min-1) 3,700 2,800 2,200 1,900 1,400 1,400 1,100 1,100 900 Shouldering 1.5Dc×0.4Dc Feed Rate (mm/min) 300 280 260 300 280 420 290 430 380 Stainless Steel Spindle Revolution (min-1) 3,200 2,400 1,900 1,600 1,200 1,200 1,000 1,000 800 Slotting 0.5Dc Feed Rate (mm/min) 200 190 180 200 190 290 210 310 270 Spindle Revolution (min-1) 3,700 2,800 2,200 1,900 1,400 1,400 1,100 1,100 900 Shouldering 2Dc×0.4Dc Feed Rate (mm/min) 390 390 390 390 390 590 390 540 450 ap <40HRC Titanium Alloys Spindle Revolution (min-1) 3,000 2,200 1,800 1,500 1,100 1,100 900 900 700 Slotting 0.5Dc Feed Rate (mm/min) 310 310 310 310 310 470 310 430 360 Slotting Spindle Revolution (min-1) 3,200 2,400 1,900 1,600 1,200 1,200 1,000 1,000 800 Shouldering 1.5Dc×0.25Dc Feed Rate (mm/min) 300 300 300 300 300 430 300 430 370 >40HRC Spindle Revolution (min-1) 2,500 1,900 1,500 1,300 1,000 1,000 800 800 600 Slotting 0.3Dc Feed Rate (mm/min) 230 230 230 230 230 340 230 340 290 Spindle Revolution (min-1) 1,600 1,200 1,000 800 600 600 500 500 400 Heat-resistant Shouldering 1Dc×0.2Dc Alloys Feed Rate (mm/min) 100 100 100 100 100 140 100 140 130 (Ni-base heat- Spindle Revolution (min-1) 1,300 1,000 800 600 500 500 400 400 300 resistant alloys) Slotting 0.25Dc Feed Rate (mm/min) 80 80 80 80 80 120 80 120 100 * Machining with water soluble coolant is recommended for stainless steel, titanium alloys and heat-resistant alloys. L64