ATA International Product Catalogue

306557 1450 α/2 Recommended cutting data for DIAMOND-cated solid carbide Karnasch end mills These conditons are for general guidance; in actual maching conditions adjust the parameters according to your actual machine and work-piece conditions. If the rpm available is lower than recommended please reduce the feed rate to the same ratio. Use only accurate and highly rigid machines. Cutting conditions for arc radius r3 Material Group 14.0 Graphite d4 r1 r3 a/2 rpm Vf mm/min fz mm ap mm ae mm 2.50 0.50 12.5 10.17° 35,000 4,200 0.03 0.22 0.05-0.1 5.00 0.50 350 12.60° 33,000 6,600 0.05 1.18 0.05-0.1 3.75 0.75 18.75 10.19° 33,000 5,280 0.04 0.27 0.05-0.1 5.00 1.00 25 10.18° 32,000 6,400 0.05 0.32 0.05-0.1 7.00 1.00 350 13.39° 25,000 6,000 0.06 1.18 0.05-0.1 7.50 1.50 37.5 10.18° 25,000 6,000 0.06 0.39 0.05-0.1 10.00 2.00 50 10.18° 16,000 4,480 0.07 0.45 0.05-0.1 9.00 2.00 350 12.16° 20,000 5,600 0.07 1.18 0.05-0.1 Cutting conditions for ball radius r1 Material Group 2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 3.1 - 3.2 Heat treated steels < 35 HRC (1200 N/mm²) d4 r1 r3 a/2 rpm Vf mm/min fz mm ap mm ae mm 2.50 0.50 12.5 10.17° 42,000 3,024 0.018 0.09 0.30 5.00 0.50 350 12.60° 39,500 2,844 0.018 0.09 0.30 3.75 0.75 18.75 10.19° 39,500 4,424 0.028 0.10 0.30 5.00 1.00 25 10.18° 38,500 5,390 0.035 0.19 0.55 7.00 1.00 350 13.39° 30,000 4,200 0.035 0.19 0.55 7.50 1.50 37.5 10.18° 30,000 4,800 0.040 0.28 0.85 10.00 2.00 50 10.18° 19,500 3,510 0.045 0.38 1.15 9.00 2.00 350 12.16° 24,000 4,320 0.045 0.38 1.15 Cutting conditions for ball radius r1 and arc radius r3 Material Group 2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 3.1 - 3.2 Heat treated steels < 35 HRC (1200 N/mm²) d4 r1 r3 a/2 rpm Vf mm/min fz mm 2.50 0.50 12.5 10.17° 37,500 3,750 0.025 5.00 0.50 350 12.60° 35,500 5,680 0.040 3.75 0.75 18.75 10.19° 35,500 4,686 0.033 5.00 1.00 25 10.18° 34,500 5,520 0.040 7.00 1.00 350 13.39° 27,000 4,860 0.045 7.50 1.50 37.5 10.18° 27,000 4,860 0.045 10.00 2.00 50 10.18° 17,500 3,850 0.055 9.00 2.00 350 12.16° 21,600 4,752 0.055 For cutting depth and cutting width (ap+ae) refere to the above conditions for each section. Cutting depth ap based on the desired theoretical roughness depth R th Theoretical roughness depth R th (mm) Art. Parabolic radius 0.0001 mm 0.0003 mm 0.0005 mm 0.001 mm 0.003 mm 0.005 mm ap mm ap mm ap mm ap mm ap mm ap mm 30 6557 0250 0125 10 12.5 0.10 0.17 0.22 0.32 0.55 0.71 30 6557 0500 350 175 350 0.53 0.92 1.18 1.67 2.90 3.74 30 6557 0375 01875 15 18.75 0.12 0.21 0.27 0.39 0.67 0.87 30 6557 0500 025 20 25 0.14 0.24 0.32 0.45 0.77 1.00 30 6557 0700 350 175 350 0.53 0.92 1.18 1.67 2.90 3.74 30 6557 0750 0375 30 37.5 0.17 0.30 0.39 0.55 0.95 1.22 30 6557 1000 050 40 50 0.20 0.35 0.45 0.63 1.10 1.41 30 6557 0900 350 175 350 0.53 0.92 1.18 1.67 2.90 3.74 We recommend using the end mills at a working angle of α/2. 11 Index 10 9 OIL 8 7 6 5 4 3 2 1