■ 4TFK (Short, Medium), 4TFR (Medium) Applications Workpiece Material Application Depth of Cut Outside Dia. φ3 φ4 φ5 φ6 φ8 φ10 φ12 φ16 φ20 (ap×ae) (mm) Dc (mm) Shouldering 1.5Dc×0.2Dc Spindle Revolution (min-1) 13,800 10,300 8,300 6,900 5,200 4,100 3,400 2,600 2,100 Carbon Steel, Cast Iron Feed Rate (mm/min) 1,490 1,570 1,590 1,660 1,630 1,490 1,410 1,240 1,080 Slotting Dc≤φ12 : ap≤1.0Dc Spindle Revolution (min-1) 11,100 8,400 6,700 5,600 4,200 3,300 2,800 2,100 1,700 Dc>φ12 : ap≤12 Feed Rate (mm/min) 770 790 790 800 750 690 600 540 410 Shouldering 1.5Dc×0.2Dc Spindle Revolution (min-1) 10,600 8,000 6,400 5,300 4,000 3,200 2,700 2,000 1,600 Alloy Steel Feed Rate (mm/min) 900 1,020 1,020 1,020 920 870 800 720 640 Slotting Dc≤φ12 : ap≤1.0Dc Spindle Revolution (min-1) 8,500 6,400 5,100 4,200 3,200 2,500 2,100 1,600 1,300 ap Dc>φ12 : ap≤12 Feed Rate (mm/min) 540 530 550 590 570 530 500 450 410 Shouldering 1.5Dc×0.05Dc Spindle Revolution (min-1) 9,500 7,200 5,700 4,800 3,600 2,900 2,400 1,800 1,400 ae Pre-hardened steel Feed Rate (mm/min) 690 760 810 850 830 800 770 640 590 (30~45HRC) Spindle Revolution (min-1) 7,400 5,600 4,500 3,700 2,800 2,200 1,900 1,400 1,100 Shouldering Slotting ap≤0.5×Dc Feed Rate (mm/min) 480 540 570 600 550 490 460 380 340 Shouldering 1.5Dc×0.05Dc Spindle Revolution (min-1) 9,500 7,200 5,700 4,800 3,600 2,900 2,400 1,800 1,400 Stainless Steel Feed Rate (mm/min) 690 760 810 850 830 800 770 640 590 Slotting ap≤0.5×Dc Spindle Revolution (min-1) 5,500 4,200 3,800 3,500 2,800 2,200 1,900 1,400 1,100 Feed Rate (mm/min) 120 130 180 360 420 370 340 280 250 ap Shouldering 1.5Dc×0.1Dc Spindle Revolution (min-1) 8,500 6,400 5,100 4,200 3,200 2,500 2,100 1,600 1,300 Titanium Alloys Feed Rate (mm/min) 500 520 520 640 700 730 670 560 450 Slotting Dc≤φ12 : ap≤1.0Dc Spindle Revolution (min-1) 7,400 5,600 4,500 3,700 2,800 2,200 1,900 1,400 1,100 Dc>φ12 : ap≤12 Feed Rate (mm/min) 290 330 330 350 370 410 380 290 230 Slotting Spindle Revolution (min-1) 4,200 3,200 2,500 2,100 1,600 1,300 1,100 800 640 Shouldering 1.5Dc×0.05Dc Feed Rate (mm/min) 250 250 250 250 240 230 220 210 200 Heat-resistant Alloys Spindle Revolution (min-1) 3,000 2,200 1,800 1,500 1,100 900 700 600 400 Slotting ap≤0.3×Dc Feed Rate (mm/min) 90 100 100 100 110 130 120 90 70 * Machining with water soluble coolant is recommended for stainless steel, titanium alloys and heat-resistant alloys. ■ 4TFK (Long) Applications Workpiece Material Application Depth of Cut Outside Dia. φ3 φ4 φ5 φ6 φ8 φ10 φ12 φ16 φ20 (ap×ae) (mm) Dc (mm) Carbon Steel, Cast Iron Shouldering 2.5Dc×0.1Dc Spindle Revolution (min-1) 11,000 8,200 6,600 5,500 4,200 3,300 2,700 2,100 1,700 Feed Rate (mm/min) 970 1,020 1,030 1,080 1,060 970 920 810 700 Alloy Steel Shouldering 2.5Dc×0.1Dc Spindle Revolution (min-1) 6,000 4,600 3,600 3,000 2,300 1,800 1,500 1,100 910 L Feed Rate (mm/min) 490 550 550 550 500 470 430 390 350 Pre-hardened steel Shouldering 2.5Dc×0.05Dc Spindle Revolution (min-1) 6,000 4,600 3,600 3,000 2,300 1,800 1,500 1,100 910 (30~45HRC) Feed Rate (mm/min) 490 550 550 550 500 470 430 390 350 ap Spindle Revolution (min-1) 4,800 3,600 2,900 2,400 1,800 1,500 1,200 900 700 Stainless Steel Shouldering 2.5Dc×0.05Dc Feed Rate (mm/min) 350 380 410 430 420 400 390 320 300 ae Spindle Revolution (min-1) 4,300 3,200 2,600 2,100 1,600 1,300 1,100 800 700 Solid End Mill Titanium Alloys Shouldering 2.5Dc×0.05Dc Feed Rate (mm/min) 250 260 260 320 350 370 340 280 230 Shouldering Heat-resistant Shouldering 2.5Dc×0.02Dc Spindle Revolution (min-1) 2,100 1,600 1,300 1,100 800 650 550 400 320 Alloys Feed Rate (mm/min) 125 125 125 125 120 115 110 105 100 * Machining with water soluble coolant is recommended for stainless steel, titanium alloys and heat-resistant alloys. Slotting is not recommended. ■ 4YEKM, 4YECM, 4YERM Applications Workpiece Material Application Depth of Cut Outside Dia. φ4 φ5 φ6 φ8 φ10 φ12 φ16 φ20 φ25 (ap×ae) (mm) Dc (mm) Shouldering 1Dc×0.5Dc Spindle Revolution (min-1) 8,400 6,700 5,600 4,200 3,300 2,800 2,100 1,700 1,300 Carbon Steel Feed Rate (mm/min) 840 800 890 840 790 720 580 510 390 Alloy Steel Spindle Revolution (min-1) 8,400 6,700 5,600 4,200 3,300 2,800 2,100 1,700 1,300 (~30HRC) Slotting 1Dc Feed Rate (mm/min) 840 800 890 840 790 720 580 510 390 ap Shouldering 1Dc×0.3Dc Spindle Revolution (min-1) 6,800 5,400 4,500 3,400 2,700 2,300 1,700 1,400 1,100 Carbon Steel Feed Rate (mm/min) 540 540 630 610 540 500 400 360 300 Alloy Steel Spindle Revolution (min-1) 6,800 5,400 4,500 3,400 2,700 2,300 1,700 1,400 1,100 ae (30~40HRC) Slotting 1Dc Feed Rate (mm/min) 540 540 630 610 540 500 400 360 300 Shouldering Spindle Revolution (min-1) 6,400 5,100 4,200 3,200 2,600 2,100 1,600 1,300 1,000 Shouldering 1Dc×0.25Dc Feed Rate (mm/min) 510 510 580 570 520 460 380 330 280 Stainless Steel Spindle Revolution (min-1) 6,400 5,100 4,200 3,200 2,600 2,100 1,600 1,300 1,000 Slotting 0.5Dc Feed Rate (mm/min) 510 510 580 570 520 460 380 330 280 Shouldering 1Dc×0.25Dc Spindle Revolution (min-1) 4,000 3,200 2,700 2,000 1,600 1,300 1,000 800 600 Titanium Alloys Feed Rate (mm/min) 190 190 210 240 190 200 180 190 160 Slotting 0.5Dc Spindle Revolution (min-1) 4,000 3,200 2,700 2,000 1,600 1,300 1,000 800 600 ap Feed Rate (mm/min) 190 190 210 240 190 200 180 190 160 Shouldering 1Dc×0.25Dc Spindle Revolution (min-1) 2,400 1,900 1,600 1,200 1,000 800 600 500 400 Heat-resistant Feed Rate (mm/min) 100 80 100 130 100 120 110 110 80 Alloys Spindle Revolution (min-1) 2,400 1,900 1,600 1,200 1,000 800 600 500 400 Slotting Slotting 0.3Dc Feed Rate (mm/min) 100 80 100 130 100 120 110 110 80 * Machining with water soluble coolant is recommended for stainless steel, titanium alloys and heat-resistant alloys. 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