Metric Drill Size Cutting Speed & RPM

Metric Drill Size 5-45 Feet per Minute

Drill Size (mm) Cutting Speed, Feet per Minute
5 6 8 10 12 16 20 25 30 35 40 45
Revolutions per Minute
5 318 382 509 637 764 1019 1273 1592 1910 2228 2546 2865
6 265 318 424 530 637 849 1061 1326 1592 1857 2122 2387
8 199 239 318 398 477 637 796 995 1194 1393 1592 1790
10 159 191 255 318 382 509 637 796 955 1114 1273 1432
12 133 159 212 265 318 424 531 663 796 928 1061 1194
16 99.5 119 159 199 239 318 398 497 597 696 796 895
20 79.6 95.5 127 159 191 255 318 398 477 557 637 716
25 63.7 76.4 102 127 153 204 255 318 382 446 509 573
30 53.1 63.7 84.9 106 127 170 212 265 318 371 424 477
35 45.5 54.6 72.8 90.9 109 145 182 227 273 318 364 409
40 39.8 47.7 63.7 79.6 95.5 127 159 199 239 279 318 358
45 35.4 42.4 56.6 70.7 84.9 113 141 177 212 248 283 318
50 31.8 38.2 51 63.7 76.4 102 127 159 191 223 255 286
55 28.9 34.7 46.3 57.9 69.4 92.6 116 145 174 203 231 260
60 26.6 31.8 42.4 53.1 63.7 84.9 106 133 159 186 212 239
65 24.5 29.4 39.2 49 58.8 78.4 98 122 147 171 196 220
70 22.7 27.3 36.4 45.5 54.6 72.8 90.9 114 136 159 182 205
75 21.2 25.5 34 42.4 51 68 84.9 106 127 149 170 191
80 19.9 23.9 31.8 39.8 47.7 63.7 79.6 99.5 119 139 159 179
90 17.7 21.2 28.3 35.4 42.4 56.6 70.7 88.4 106 124 141 159
100 15.9 19.1 25.5 31.8 38.2 51 63.7 79.6 95.5 111 127 143
110 14.5 17.4 23.1 28.9 34.7 46.2 57.9 72.3 86.8 101 116 130
120 13.3 15.9 21.2 26.5 31.8 42.4 53.1 66.3 79.6 92.8 106 119
130 12.2 14.7 19.6 24.5 29.4 39.2 49 61.2 73.4 85.7 97.9 110
140 11.4 13.6 18.2 22.7 27.3 36.4 45.5 56.8 68.2 79.6 90.9 102
150 10.6 12.7 17 21.2 25.5 34 42.4 53.1 63.7 74.3 84.9 95.5
160 9.9 11.9 15.9 19.9 23.9 31.8 39.8 49.7 59.7 69.6 79.6 89.5
170 9.4 11.2 15 18.7 22.5 30 37.4 46.8 56.2 65.5 74.9 84.2
180 8.8 10.6 14.1 17.7 21.2 28.3 35.4 44.2 53.1 61.9 70.7 79.6
190 8.3 10 13.4 16.8 20.1 26.8 33.5 41.9 50.3 58.6 67 75.4
200 8 39.5 12.7 15.9 19.1 25.5 31.8 39.8 47.7 55.7 63.7 71.6
220 7.2 8.7 11.6 14.5 17.4 23.1 28.9 36.2 43.4 50.6 57.9 65.1
240 6.6 8 10.6 13.3 15.9 21.2 26.5 33.2 39.8 46.4 53.1 59.7
260 6.1 7.3 9.8 12.2 14.7 19.6 24.5 30.6 36.7 42.8 49 55.1
280 5.7 6.8 9.1 11.4 13.6 18.2 22.7 28.4 34.1 39.8 45.5 51.1
300 5.3 6.4 8.5 10.6 12.7 17 21.2 26.5 31.8 37.1 42.4 47.7
350 4.5 5.4 7.3 9.1 10.9 14.6 18.2 22.7 27.3 31.8 36.4 40.9
400 4 4.8 6.4 8 9.5 12.7 15.9 19.9 23.9 27.9 31.8 35.8
450 3.5 4.2 5.7 7.1 8.5 11.3 14.1 17.7 21.2 24.8 28.3 31.8
500 3.2 3.8 5.1 6.4 7.6 10.2 12.7 15.9 19.1 22.3 25.5 28.6

Metric Drill Size 50-200 Feet per Minute

Drill Size (mm) Cutting Speed, Feet per Minute
50 55 60 65 70 75 80 85 90 95 100 200
Revolutions per Minute
5 3183 3501 3820 4138 4456 4775 5093 5411 5730 6048 6366 12,732
6 2653 2918 3183 3448 3714 3979 4244 4509 4775 5039 5305 10,610
8 1989 2188 2387 2586 2785 2984 3183 3382 3581 3780 3979 7958
10 1592 1751 1910 2069 2228 2387 2546 2706 2865 3024 3183 6366
12 1326 1459 1592 1724 1857 1989 2122 2255 2387 2520 2653 5305
16 995 1094 1194 1293 1393 1492 1591 1691 1790 1890 1989 3979
20 796 875 955 1034 1114 1194 1273 1353 1432 1512 1592 3183
25 637 700 764 828 891 955 1019 1082 1146 1210 1273 2546
30 530 584 637 690 743 796 849 902 955 1008 1061 2122
35 455 500 546 591 637 682 728 773 819 864 909 1818
40 398 438 477 517 557 597 637 676 716 756 796 1592
45 354 389 424 460 495 531 566 601 637 672 707 1415
50 318 350 382 414 446 477 509 541 573 605 637 1273
55 289 318 347 376 405 434 463 492 521 550 579 1157
60 265 292 318 345 371 398 424 451 477 504 530 1061
65 245 269 294 318 343 367 392 416 441 465 490 979
70 227 250 273 296 318 341 364 387 409 432 455 909
75 212 233 255 276 297 318 340 361 382 403 424 849
80 199 219 239 259 279 298 318 338 358 378 398 796
90 177 195 212 230 248 265 283 301 318 336 354 707
100 159 175 191 207 223 239 255 271 286 302 318 637
110 145 159 174 188 203 217 231 246 260 275 289 579
120 133 146 159 172 186 199 212 225 239 252 265 530
130 122 135 147 159 171 184 196 208 220 233 245 490
140 114 125 136 148 159 171 182 193 205 216 227 455
150 106 117 127 138 149 159 170 180 191 202 212 424
160 99.5 109 119 129 139 149 159 169 179 189 199 398
170 93.6 103 112 122 131 140 150 159 169 178 187 374
180 88.4 97.3 106 115 124 133 141 150 159 168 177 354
190 83.8 92.1 101 109 117 126 134 142 151 159 167 335
200 79.6 87.5 95.5 103 111 119 127 135 143 151 159 318
220 72.3 79.6 86.8 94 101 109 116 123 130 137 145 289
240 66.3 72.9 79.6 86.2 92.8 99.5 106 113 119 126 132 265
260 61.2 67.3 73.4 79.6 85.7 91.8 97.9 104 110 116 122 245
280 56.8 62.5 68.2 73.9 79.6 85.3 90.9 96.6 102 108 114 227
300 53.1 58.3 63.7 69 74.3 79.6 84.9 90.2 95.5 101 106 212
350 45.5 50 54.6 59.1 63.7 68.2 72.8 77.3 81.8 99.1 91 182
400 39.8 43.8 47.7 51.7 55.7 59.7 63.7 67.6 71.6 75.6 79.6 159
450 35.4 38.9 42.4 46 49.5 53.1 56.6 60.1 63.6 67.2 70.7 141
500 31.8 35 38.2 41.4 44.6 47.7 50.9 54.1 57.3 60.5 63.6 127