Cutting Condition Chart # 5 - 4 Flute End Mills Suggested Speeds and Feeds Side Milling (Fractional) Work Material Aluminum Cast Iron Medium Carbon Steel Mild Steel Pre-hardened, Stainless, Die & Alloy Steels Pre-hardened, Stainless Die & Alloy Steels Hardened Steels Hardness       <HRC30 HRC30-40 HRC40-50 Depth of Cut    Ad= 1.5D Rd=0.1D Mill Diameter (inch) V=330-400 SFM V=100-150 SFM V=100-150 SFM V=80-115 SFM V=80-100 SFM V=50 SFM Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM .030 40000 24.8 16000 6.9 14000 3.3 10000 2.0 10000 1.0 6000 0.6 3/64 31500 24.8 14000 9.6 11000 4.7 8000 3.3 8000 2.0 4800 0.8 1/16 21200 24.8 9500 9.6 7500 4.7 5300 3.3 5400 2.0 3200 0.8 5/64 16000 24.8 7100 13.8 5500 4.7 4000 3.3 4000 2.0 2400 0.8 1/8 12500 24.8 4750 16.5 4500 8.3 3550 6.7 3150 2.5 1600 1.4 5/32 9500 26.2 3550 16.5 3550 9.6 2650 6.7 2360 2.5 1200 1.4 3/16 7500 26.2 2800 16.5 2800 11.0 2120 6.7 1900 2.5 950 1.4 1/4 6300 26.2 2360 16.5 2360 11.0 1700 6.7 1600 2.5 800 1.4 5/16 4750 27.6 1800 16.5 1800 11.0 1320 6.7 1180 2.5 600 1.4 3/8 3750 27.6 1400 17.3 1400 12.2 1060 6.7 950 2.5 480 1.4 1/2 3150 30.7 1180 17.3 1180 12.2 850 6.7 800 2.5 400 1.4 5/8 2360 30.7 900 20.7 900 13.8 670 7.9 600 2.5 300 1.4 3/4 1900 30.7 710 20.7 710 13.8 530 8.3 475 2.5 240 1.4 1 1500 27.6 560 20.7 560 13.8 425 7.9 375 2.0 190 1.1  Cutting Condition Chart # 4 - 2 & 3 Flute End Mills Suggested Speeds and Feeds Side Milling (Fractional) Work Material Aluminum Cast Iron Medium Carbon Steel Mild Steel Pre-hardened, Stainless Die, & Alloy Steels Pre-hardened, Stainless Die, & Alloy Steels Hardened Steels Hardness       <HRC30 HRC30-40 HRC40-50 Depth of Cut    Ad= 1.5D Rd=0.1D Mill Diameter (inch) V=330-400 SFM V=100-150 SFM V=100-150 SFM V=80-115 SFM V=80-100 SFM V=50 SFM Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM .015 100000 15.7 31500 3.9 30000 2.0 25000 1.2 25000 0.6 16000 0.3 .020 62000 17.7 22400 4.9 22000 2.4 16000 1.4 16000 0.7 9500 0.4 .030 40000 17.7 16000 4.9 14000 2.4 10000 1.4 10000 0.7 6000 0.4 3/64 31500 17.7 14000 6.9 11000 3.3 8000 2.4 8000 1.4 4800 0.6 1/16 21200 17.7 9500 6.9 7500 3.3 5300 2.4 5400 1.4 3200 0.6 5/64 16000 17.7 7100 9.8 5500 3.3 4000 2.4 4000 1.4 2400 1.0 1/8 12500 17.7 4750 11.8 4500 5.9 3550 4.7 3150 1.8 1600 1.0 5/32 9500 18.7 3550 11.8 3550 6.9 2650 4.7 2360 1.8 1200 1.0 3/16 7500 18.7 2800 11.8 2800 7.9 2120 4.9 1900 1.8 950 1.0 1/4 6300 18.7 2360 11.8 2360 7.9 1700 4.9 1600 1.8 800 1.0 5/16 4750 19.7 1800 11.8 1800 7.9 1320 4.9 1180 1.8 600 1.0 3/8 3750 19.7 1400 12.4 1400 8.9 1060 4.9 950 1.8 480 1.0 1/2 3150 22.0 1180 12.4 1180 8.9 850 4.9 800 1.8 400 1.0 5/8 2360 22.0 900 14.8 900 9.8 670 5.5 600 1.8 300 1.0 3/4 1900 22.0 710 14.8 710 9.8 530 5.9 475 1.8 240 1.0 1 1500 19.7 560 14.8 560 9.8 425 5.5 375 1.4 190 0.8

Cutting Condition Chart # 5 - 4 Flute End Mills Suggested Speeds and Feeds Slotting (Fractional) Work Material Aluminum Cast Iron Medium Carbon Steel Mild Steel Pre-hardened, Stainless Die & Alloy Steels Pre-hardened, Stainless Die & Alloy Steels Hardened Steels Hardness       <HRC30 HRC30-40 HRC40-50 Depth of Cut    up to 1/32 Ad =0.2D from 1/32 to 5/64 Ad= 0.3D over 5/64 Ad=0.5D Mill Diameter (inch) V=330 SFM V=100-150 SFM V=100-130 SFM V=65-100 SFM V=65-82 SFM V=43 SFM Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM .030 40000 11.0 16000 6.9 14000 3.5 8000 1.4 8000 0.8 6000 0.4 3/64 31500 11.0 14000 7.9 12500 4.1 7500 1.7 7000 0.8 4800 0.4 1/16 21200 11.0 9500 7.9 8500 4.9 6500 2.0 5000 1.1 3200 0.6 5/64 16000 16.5 7100 8.3 6300 5.5 5000 3.3 4000 1.7 2400 0.9 1/8 11200 16.5 4750 8.9 4250 5.5 3200 4.3 2600 1.7 1600 0.9 5/32 8000 16.5 3550 8.9 3150 5.5 2400 4.3 2000 1.7 1200 0.9 3/16 6300 16.5 2800 8.9 2500 5.5 2000 4.3 1600 1.7 950 0.9 1/4 5300 16.5 2360 11.0 2120 5.5 1600 4.3 1300 1.7 800 0.9 5/16 4000 16.5 1800 13.0 1600 5.5 1200 4.3 1000 1.7 600 0.9 3/8 3150 16.5 1400 13.0 1250 5.5 1000 4.3 800 1.7 480 0.9 1/2 2650 16.5 1180 13.0 1060 5.5 820 4.3 700 1.7 400 0.9 5/8 2000 16.5 900 13.0 800 5.5 640 4.7 500 2.0 300 0.7 3/4 1600 16.5 710 13.0 630 5.5 500 4.7 400 2.0 240 0.6 1 1250 16.5 560 13.0 500 5.5 400 4.7 320 2.0 190 0.4  Cutting Condition Chart # 4 - 2 & 3 Flute End Mills Suggested Speeds and Feeds Slotting (Fractional) Work Material Aluminum Cast Iron Medium Carbon Steel Mild Steel Pre-hardened, Stainless Die, & Alloy Steels Pre-hardened, Stainless Die, & Alloy Steels Hardened Steels Hardness       <HRC30 HRC30-40 HRC40-50 Depth of Cut    up to 1/32 Ad =0.2D from 1/32 to 5/64 Ad= 0.3D over 5/64 Ad=0.5D Mill Diameter (inch) V=330 SFM V=100-150 SFM V=100-130 SFM V=65-100 SFM V=65-82 SFM V=43 SFM Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed Speed Feed RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM RPM IPM .015 100000 7.1 31500 3.9 30000 1.4 22400 0.7 21200 0.5 16000 0.3 .020 62000 7.9 22400 4.9 19000 1.6 13000 0.8 12000 0.6 9500 0.3 .030 40000 7.9 16000 4.9 14000 2.5 8000 1.0 8000 0.6 6000 0.3 3/64 31500 7.9 14000 5.5 12500 3.0 7500 1.2 7000 0.6 4800 0.3 1/16 21200 7.9 9500 5.5 8500 3.5 6500 1.4 5000 0.8 3200 0.4 5/64 16000 11.8 7100 5.9 6300 3.9 5000 2.4 4000 1.2 2400 0.6 1/8 11200 11.8 4750 6.3 4250 3.9 3200 3.1 2600 1.2 1600 0.6 5/32 8000 11.8 3550 6.3 3150 3.9 2400 3.1 2000 1.2 1200 0.6 3/16 6300 11.8 2800 6.3 2500 3.9 2000 3.1 1600 1.2 950 0.6 1/4 5300 11.8 2360 7.9 2120 3.9 1600 3.1 1300 1.2 800 0.6 5/16 4000 11.8 1800 9.3 1600 3.9 1200 3.1 1000 1.2 600 0.6 3/8 3150 11.8 1400 9.3 1250 3.9 1000 3.1 800 1.2 480 0.6 1/2 2650 11.8 1180 9.3 1060 3.9 820 3.1 700 1.2 400 0.6 5/8 2000 11.8 900 9.3 800 3.9 640 3.3 500 1.5 300 0.5 3/4 1600 11.8 710 9.3 630 3.9 500 3.3 400 1.5 240 0.4 1 1250 11.8 560 9.3 500 3.9 400 3.3 320 1.5 190 0.3

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