Machinery's Handbook, 31st Edition
1086
RPM FOR VARIOUS SPEEDS AND DIAMETERS Revolutions per Minute for Various Cutting Speeds and Diameters
Cutting Speed, Feet per Minute
Dia., Inches
40
50
60
70
80
90 100 120 140 160 180 200
Revolutions per Minute
611 489 408 349 306 272 245 222 203 190 175 163 153 144 136 129 123 116 111 106 102
764 611 509 437 382 340 306 273 254 237 219 204 191 180 170 161 153 146 139 133 127
917 1070 1222 1376 1528 1834 2139 2445 2750 3056
1 ∕ 4
733 611 524 459 407 367 333 306 284 262 244 229 215 204 193 183 175 167 159 153 146 141 136 131 122
856 713 611 535 475 428 389 357 332 306 285 267 251 238 225 214 204 195 186 178 171 165 158 153 143 134 126 119
978 1100 1222 1466 1711 1955 2200 2444
5 ∕ 16
815 699 611 543 489 444 408 379 349 326 306 287 272 258 245 233 222 212 204 195 188 181 175 163 153 144 136 129 122 116
916 1018 1222 1425 1629 1832 2036
3 ∕ 8
786 688 611 552 500 458 427 392 366 344 323 306 290 274 262 250 239 230 220 212 203 196 184 172 162 153 145 138 131 125 119 114
874 1049 1224 1398 1573 1748
7 ∕ 16
764 679 612 555 508 474 438 407 382 359 340 322 306 291 278 265 254 244 234 226 218 204 191 180 170 161 153 145 139 132 127 122 117 113
917 1070 1222 1375 1528
1 ∕ 2
813 736 666 610 569 526 488 458 431 408 386 367 349 334 318 305 293 281 271 262 244 229 216 204 193 184 174 167 158 152 146 140 136 131 126 122
951 1086 1222 1358
9 ∕ 16
857 770 711 664 613 570 535 503 476 451 428 407 389 371 356 342 328 316 305 286 267 252 238 225 213 203 195 185 178 171 164 158 153 147 143 138 134 126 119
979 1102 1224
5 ∕ 8
888 813 758 701 651 611 575 544 515 490 466 445 424 406 390 374 362 349 326 306 288 272 258 245 232 222 211 203 195 188 181 174 168 163 158 153 144 136 129 122 116
999 1101 914 1016
11 ∕ 16
3 ∕ 4
853 788 733 688 646 612 580 551 524 500 477 457 439 421 407 392 367 344 324 306 290 275 261 250 238 228 219 211 203 196 189 184 177 172 162 153 145 138 131 125 120 114
948 876 814 764 718 680 644 612 582 556 530 508 488 468 452 436 408 382 360 340 322 306 290 278 264 254 244 234 226 218 210 205 197 191 180 170 161 153 145 139 133 127
13 ∕ 16
7 ∕ 8
15 ∕ 16
1
1 1 ∕ 16 1 1 ∕ 8 1 3 ∕ 16 1 1 ∕ 4 1 5 ∕ 16 1 3 ∕ 8 1 7 ∕ 16 1 1 ∕ 2 1 9 ∕ 16 1 5 ∕ 8 1 11 ∕ 16
97.6 122 93.9 117 90.4 113 87.3 109 81.5 102
1 3 ∕ 4 1 7 ∕ 8 2 1 ∕ 8 2 1 ∕ 4 2 3 ∕ 8 2 1 ∕ 2 2 2 5 ∕ 8 2 3 ∕ 4 2 7 ∕ 8 3 1 ∕ 8 3 1 ∕ 4 3 3 ∕ 8 3 1 ∕ 2 3 3 5 ∕ 8 3 3 ∕ 4 3 7 ∕ 8 4 1 ∕ 4 4 1 ∕ 2 4 3 ∕ 4 4 5 1 ∕ 4 5 1 ∕ 2 5 3 ∕ 4 5
76.4 95.5 115 72.0 90.0 108 68.0 85.5 102
64.4 80.5 96.6 113 61.2 76.3 91.7 107 58.0 72.5 87.0 102
55.6 69.5 83.4 97.2 111 52.8 66.0 79.2 92.4 106 51.0 63.7 76.4 89.1 102
48.8 61.0 73.2 85.4 97.6 110 46.8 58.5 70.2 81.9 93.6 105 45.2 56.5 67.8 79.1 90.4 102
43.6 54.5 65.5 76.4 87.4 98.1 109 42.0 52.5 63.0 73.5 84.0 94.5 105 40.8 51.0 61.2 71.4 81.6 91.8 102
39.4 49.3 59.1 69.0 78.8 88.6 98.5 118 38.2 47.8 57.3 66.9 76.4 86.0 95.6 115 35.9 44.9 53.9 62.9 71.8 80.8 89.8 108 34.0 42.4 51.0 59.4 67.9 76.3 84.8 102
32.2 40.2 48.2 56.3 64.3 72.4 80.4 96.9 113 30.6 38.2 45.9 53.5 61.1 68.8 76.4 91.7 107 29.1 36.4 43.6 50.9 58.2 65.4 72.7 87.2 102
27.8 34.7 41.7 48.6 55.6 62.5 69.4 83.3 97.2 111 26.6 33.2 39.8 46.5 53.1 59.8 66.4 80.0 93.0 106 25.5 31.8 38.2 44.6 51.0 57.2 63.6 76.3 89.0 102
6
6 1 ∕ 4 24.4 30.6 36.7 42.8 48.9 55.0 61.1 73.3 85.5 97.7 110 122 6 1 ∕ 2 23.5 29.4 35.2 41.1 47.0 52.8 58.7 70.4 82.2 93.9 106 117 6 3 ∕ 4 22.6 28.3 34.0 39.6 45.3 50.9 56.6 67.9 79.2 90.6 102 113 7 21.8 27.3 32.7 38.2 43.7 49.1 54.6 65.5 76.4 87.4 98.3 109 7 1 ∕ 4 21.1 26.4 31.6 36.9 42.2 47.4 52.7 63.2 73.8 84.3 94.9 105 7 1 ∕ 2 20.4 25.4 30.5 35.6 40.7 45.8 50.9 61.1 71.0 81.4 91.6 102 7 3 ∕ 4 19.7 24.6 29.5 34.4 39.4 44.3 49.2 59.0 68.9 78.7 88.6 98.4 8 19.1 23.9 28.7 33.4 38.2 43.0 47.8 57.4 66.9 76.5 86.0 95.6
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