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（180〜250HB）vf(IPM)n(min-1)vf(IPM)48393430212116483934302121163740322121374032212156565141373256565141373256565141373232315657464136n(min-1)vf(IPM)64524640302418645246403024185752422828575242282885857752464085857752464085857752464040388577625648n(min-1)26,608 21,546 19,152 16,758 14,911 14,911 11,149 26,608 21,546 19,152 16,758 14,911 14,911 11,149 20,452 18,605 14,911 11,560 11,560 20,452 18,605 14,911 11,560 11,560 17,700 17,700 16,100 13,000 11,600 10,100 17,700 17,700 16,100 13,000 11,600 10,100 17,700 17,700 16,100 13,000 11,600 10,100 10,100 9,600 17,700 16,100 13,000 11,600 10,100 vf(IPM)67544842312519675448423125196055442929605544292990908255494390908255494390908255494343419082665951n(min-1)28,008 22,680 20,160 17,640 15,696 15,696 11,736 28,008 22,680 20,160 17,640 15,696 15,696 11,736 21,528 19,584 15,696 12,168 12,168 21,528 19,584 15,696 12,168 12,168 18,700 18,700 17,000 13,800 12,200 10,700 18,700 18,700 17,000 13,800 12,200 10,700 18,700 18,700 17,000 13,800 12,200 10,700 10,700 10,200 18,700 17,000 13,800 12,200 10,700 vf(IPM)756054473528217560544735282167614932326761493232100100916154481001009161544810010091615448484510091736557n(min-1)vf(IPM)n(min-1)【Note】Please refer to P.A223362926232015113629262320151135322516163532251616474742343027474742343027474742343027272547483934301234512120%100%90%Pre-hardened（35〜45HRC）steel80%Hardened steel（45〜55HRC）Hardened steel（55〜65HRC）23,947 19,391 17,237 15,082 13,420 13,420 10,034 23,947 19,391 17,237 15,082 13,420 13,420 10,034 18,406 16,744 13,420 10,404 10,404 18,406 16,744 13,420 10,404 10,404 15,600 15,600 14,200 11,500 10,200 8,900 15,600 15,600 14,200 11,500 10,200 8,900 15,600 15,600 14,200 11,500 10,200 8,900 8,900 8,500 15,600 14,200 11,500 10,200 8,900 22,749 18,422 16,375 14,328 12,749 12,749 9,533 22,749 18,422 16,375 14,328 12,749 12,749 9,533 17,486 15,907 12,749 9,883 9,883 17,486 15,907 12,749 9,883 9,883 14,600 14,600 13,200 10,700 9,500 8,300 14,600 14,600 13,200 10,700 9,500 8,300 14,600 14,600 13,200 10,700 9,500 8,300 8,300 7,900 14,600 13,200 10,700 9,500 8,300 65%60%Tool dia.Under necklengthCornerradiusRE(mm)DC(mm)LU(mm)46810121620468101216204812152048121520468121620468121620468121620253048121620Work materialRatio to standard depth of cutap(inch)0.050.10.051.50.10.050.10.20.3Copper38,900 31,500 28,000 24,500 21,800 21,800 16,300 38,900 31,500 28,000 24,500 21,800 21,800 16,300 29,900 27,200 21,800 16,900 16,900 29,900 27,200 21,800 16,900 16,900 24,900 24,900 22,700 18,400 16,300 14,300 24,900 24,900 22,700 18,400 16,300 14,300 24,900 24,900 22,700 18,400 16,300 14,300 14,300 13,600 24,900 22,700 18,400 16,300 14,300 9376675944352693766759443526847661414184766141411201201097465571201201097465571201201097465575754120109887869.0005.0004.0003.0002.0002.0001.0001.0008.0007.0006.0004.0003.0002.0002.0008.0006.0003.0002.0002.0011.0008.0007.0006.0004.0014.0012.0010.0008.0006.0004.0017.0017.0014.0014.0009.0007.0031.0031.0028.0016.0016.0014.0010.0007.0043.0035.0024.0024.0015Carbon steelAlloy steelStainless steel（25〜35HRC）Tool steel31,120 25,200 22,400 19,600 17,440 17,440 13,040 31,120 25,200 22,400 19,600 17,440 17,440 13,040 23,920 21,760 17,440 13,520 13,520 23,920 21,760 17,440 13,520 13,520 20,800 20,800 18,900 15,300 13,600 11,900 20,800 20,800 18,900 15,300 13,600 11,900 20,800 20,800 18,900 15,300 13,600 11,900 11,900 11,300 20,800 18,900 15,300 13,600 11,900 A221Recommended cutting conditions EPDRF-THInch6