SPEEDS & FEEDS
The following tables are starting parameters only. Every application is different and may require varying feeds and speeds from this chart.
As the degree of taper increases, you may have to use the large diameter provided to calculate the appropriate RPM, instead of tip size. This usually isn’t necessary until seven degrees. At that time, the tip size would be used to calculate the needed feed per tooth. Tapered end mill usage can be tricky if the proper settings are not adhered to. Please follow these endmill usage charts as closely as possible.
TAPERED END MILLS – HIGH SPEED STEEL – FEED PER TOOTH (ROUGHING AND FINISHING) | |||||||||
---|---|---|---|---|---|---|---|---|---|
Material | SFM | 3/32 to 1/8 | 5/32 to 3/16 | 7/32 to 1/4 | 5/16 to 3/8 | 7/16 to 1/2 | 9/16 to 5/8 | 11/16 to 3/4 | 7/8 to 1″ |
Aluminum 6061 | 600 | 0.0005 | 0.001 | 0.0013 | 0.002 | 0.0035 | 0.004 | 0.0065 | 0.008 |
Stainless Steel 304, 302 | 90 | 0.0003 | 0.0004 | 0.0005 | 0.001 | 0.00013 | 0.003 | 0.0035 | 0.004 |
Cast Iron – Ductile, Grey | 100 | 0.0003 | 0.0004 | 0.0007 | 0.0013 | 0.0025 | 0.003 | 0.004 | 0.005 |
Bronze, Brass, Copper | 125 | 0.0003 | 0.0005 | 0.0008 | 0.001 | 0.0025 | 0.003 | 0.0042 | 0.005 |
Tool Steel A2, D2, H13 | 80 | 0.0002 | 0.0003 | 0.0004 | 0.0006 | 0.0015 | 0.002 | 0.0025 | 0.003 |
Steel 4140, 1020, 4340 | 80 | 0.0004 | 0.0005 | 0.0006 | 0.001 | 0.002 | 0.003 | 0.004 | 0.005 |
Titanium 6A1-6V-25N. 6A1-4V | 60 | 0.0002 | 0.0004 | 0.0005 | 0.0007 | 0.001 | 0.0023 | 0.0025 | 0.003 |
Nickel Base Alloys, Inconel 718, Hastalloy, Waspalloy |
20 | 0.0002 | 0.0004 | 0.0005 | 0.0007 | 0.001 | 0.0015 | 0.002 | 0.003 |
TAPERED END MILLS – MICROGRAIN CARBIDE – FEED PER TOOTH (ROUGHING AND FINISHING) | |||||||||
---|---|---|---|---|---|---|---|---|---|
Material | SFM | 3/32 to 1/8 | 5/32 to 3/16 | 7/32 to 1/4 | 5/16 to 3/8 | 7/16 to 1/2 | 9/16 to 5/8 | 11/16 to 3/4 | 7/8 to 1″ |
Aluminum T6 2014 T6/T651 |
600 | 0.0005 | 0.001 | 0.0013 | 0.002 | 0.0035 | 0.004 | 0.0065 | 0.008 |
Copper, Brass | 90 | 0.0003 | 0.0004 | 0.0005 | 0.001 | 0.00013 | 0.003 | 0.0035 | 0.004 |
Copper Alloy, Bronze | 100 | 0.0003 | 0.0004 | 0.0007 | 0.0013 | 0.0025 | 0.003 | 0.004 | 0.005 |
Magnesium Diecast | 125 | 0.0003 | 0.0005 | 0.0008 | 0.001 | 0.0025 | 0.003 | 0.0042 | 0.005 |
Graphite | 80 | 0.0002 | 0.0003 | 0.0004 | 0.0006 | 0.0015 | 0.002 | 0.0025 | 0.003 |
High Strength 4140, 4340,52100,H11,H13 |
80 | 0.0004 | 0.0005 | 0.0006 | 0.001 | 0.002 | 0.003 | 0.004 | 0.005 |
Mold Steels P20, 01 ,06 |
60 | 0.0002 | 0.0004 | 0.0005 | 0.0007 | 0.001 | 0.0023 | 0.0025 | 0.003 |
Alloy Steel, 200,300,11xx,13xx |
20 | 0.0002 | 0.0004 | 0.0005 | 0.0007 | 0.001 | 0.0015 | 0.002 | 0.003 |
Titanium Alloy 6AL-4V, 6AL-25N-ASTM |
200 | 0.0002 | 0.0003 | 0.0004 | 0.0009 | 0.0012 | 0.002 | 0.003 | 0.0035 |
Stainless Steel 200 Series, 304-L, 316L, 303, 15115 |
225 | 0.0002 | 0.0003 | 0.0004 | 0.0008 | 0.001 | 0.002 | 0.003 | 0.004 |
Ductile Grey Cast Iron | 250 | 0.0005 | 0.0007 | 0.0015 | 0.002 | 0.003 | 0.004 | 0.005 | 0.006 |
Plastics and Acrylics | 400 | 0.001 | 0.0015 | 0.0025 | 0.004 | 0.005 | 0.008 | 0.01 | 0.011 |
Nickel Base Haspaloy, Waspaloy Inconnel, Monel, K-monel, |
75 | 0.0004 | 0.0005 | 0.0007 | 0.0009 | 0.0015 | 0.002 | 0.0025 | 0.003 |
SFM & FPT R.P.M.= 3.82 X SFM divided by Diameter IPM = CL (chipload) X Number of Flutes X R.P.M. |
SURFACE FEET PER MINUTES | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diameter | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 125 | 150 | 200 | 300 | 400 | 500 | 600 | 800 | 1000 |
1/16 | 1122 | 1833 | 2445 | 3056 | 3667 | 4278 | 4889 | 5500 | 6112 | 7639 | 9167 | |||||||
1/8 | 611 | 917 | 1222 | 1528 | 1833 | 2139 | 2445 | 2750 | 3056 | 3820 | 4584 | 6112 | 9167 | |||||
3/16 | 407 | 611 | 815 | 1019 | 1222 | 1426 | 1630 | 1833 | 2037 | 2546 | 3056 | 4074 | 6112 | 8149 | ||||
1/4 | 306 | 458 | 611 | 764 | 917 | 1070 | 1222 | 1375 | 1528 | 1910 | 2292 | 3056 | 4584 | 6112 | 7639 | 9167 | ||
5/16 | 244 | 367 | 489 | 611 | 733 | 856 | 978 | 1100 | 1222 | 1528 | 1833 | 2445 | 3667 | 4889 | 6112 | 7334 | 9778 | |
3/8 | 204 | 306 | 407 | 509 | 611 | 713 | 815 | 917 | 1019 | 1273 | 1528 | 2037 | 3056 | 4074 | 5093 | 6112 | 8149 | |
7/16 | 175 | 260 | 347 | 435 | 520 | 615 | 700 | 780 | 875 | 1094 | 1315 | 1745 | 2620 | 3490 | 4368 | 5240 | 6990 | 8735 |
1/2 | 155 | 230 | 308 | 384 | 460 | 537 | 614 | 691 | 766 | 958 | 1148 | 1530 | 2290 | 3054 | 3821 | 4585 | 6113 | 7640 |
5/8 | 123 | 185 | 246 | 305 | 369 | 430 | 490 | 555 | 615 | 766 | 920 | 1228 | 1838 | 2450 | 3060 | 3669 | 4890 | 6120 |
3/4 | 102 | 155 | 206 | 257 | 308 | 259 | 409 | 460 | 511 | 639 | 766 | 1021 | 1530 | 2040 | 2350 | 3060 | 4080 | 5098 |
7/8 | 87 | 131 | 176 | 220 | 264 | 308 | 350 | 395 | 440 | 550 | 658 | 878 | 1312 | 1748 | 2185 | 2620 | 3494 | 4368 |
1″ | 77 | 116 | 154 | 194 | 230 | 269 | 308 | 346 | 384 | 479 | 576 | 766 | 1148 | 1530 | 1911 | 2295 | 3058 | 3820 |
1-1/8 | 68 | 102 | 138 | 174 | 206 | 239 | 274 | 308 | 341 | 424 | 508 | 678 | 1020 | 1360 | 1699 | 2038 | 2718 | 3398 |
1-1/4 | 61 | 93 | 123 | 156 | 185 | 216 | 245 | 280 | 307 | 383 | 460 | 612 | 917 | 1222 | 1530 | 1835 | 2450 | 3058 |
1-3/8 | 56 | 83 | 113 | 141 | 169 | 198 | 224 | 254 | 280 | 349 | 420 | 559 | 835 | 1112 | 1390 | 1669 | 2223 | 2780 |
1-1/2 | 52 | 77 | 104 | 129 | 154 | 180 | 206 | 230 | 256 | 319 | 383 | 510 | 765 | 1020 | 1273 | 1528 | 2038 | 2548 |
1-5/8 | 49 | 72 | 96 | 120 | 143 | 167 | 190 | 213 | 236 | 298 | 354 | 475 | 706 | 942 | 1178 | 1412 | 1882 | 2352 |
1-3/4 | 44 | 66 | 87 | 110 | 132 | 154 | 178 | 198 | 220 | 275 | 329 | 439 | 658 | 876 | 1092 | 1315 | 1249 | 2186 |
1-7/8 | 41 | 61 | 83 | 103 | 121 | 144 | 161 | 189 | 204 | 256 | 307 | 408 | 612 | 818 | 1020 | 1223 | 1631 | 2038 |
2″ | 38 | 59 | 77 | 98 | 118 | 136 | 155 | 173 | 194 | 241 | 289 | 384 | 576 | 765 | 958 | 1448 | 1530 | 1911 |
2-1/2 | 31 | 47 | 62 | 77 | 94 | 107 | 123 | 138 | 154 | 190 | 230 | 307 | 456 | 612 | 766 | 918 | 1224 | 1530 |
REVOLUTIONS PER MINUTE |
1. SFM + FPT (For Material)
2. Find RPM at intersection of SFM + Diameter
3. Calculate Feed IPM = FPT x Number of Flutes X RPM
WARNING:
All cutting tools can shatter and break during use. Government regulations require that safety glasses be worn during use. We also recommend wearing a simple respiration mask.