Brown & Sharpe Mfg. Co.
327
TABLE OF CUTTING SPEEDS
FT. Per Minute |
15 | 17.5 | 20 | 22.5 | 25 | 27.5 | 30 | 35 | 40 | 45 | 50 | 55 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Diam. | REVOLUTIONS PER MINUTE | |||||||||||
1⁄16 | 917 | 1070 | 1222 | 1375 | 1528 | 1681 | 1833 | 2139 | 2445 | 2750 | 3056 | 3361 |
1⁄8 | 458 | 535 | 611 | 688 | 764 | 840 | 917 | 1070 | 1222 | 1375 | 1528 | 1681 |
3⁄16 | 306 | 357 | 407 | 458 | 509 | 560 | 611 | 713 | 815 | 917 | 1019 | 1120 |
1⁄4 | 229 | 267 | 306 | 344 | 382 | 420 | 458 | 535 | 611 | 688 | 764 | 840 |
5⁄16 | 183 | 214 | 244 | 275 | 306 | 336 | 367 | 428 | 489 | 550 | 611 | 672 |
3⁄8 | 153 | 178 | 204 | 229 | 255 | 280 | 306 | 357 | 407 | 458 | 509 | 560 |
7⁄16 | 131 | 153 | 175 | 196 | 218 | 240 | 262 | 306 | 349 | 393 | 437 | 480 |
1⁄2 | 115 | 134 | 153 | 172 | 191 | 210 | 229 | 267 | 306 | 344 | 382 | 420 |
5⁄8 | 91.7 | 107 | 122 | 138 | 153 | 168 | 183 | 214 | 244 | 275 | 306 | 336 |
3⁄4 | 76.4 | 89.1 | 102 | 115 | 127 | 140 | 153 | 178 | 204 | 229 | 255 | 280 |
7⁄8 | 65.5 | 76.4 | 87.3 | 98.2 | 109 | 120 | 131 | 153 | 175 | 196 | 218 | 240 |
1 | 57.3 | 66.8 | 76.4 | 85.9 | 95.5 | 105 | 115 | 134 | 153 | 172 | 191 | 210 |
11⁄8 | 50.9 | 59.4 | 67.9 | 76.4 | 84.9 | 93.4 | 102 | 119 | 136 | 153 | 170 | 187 |
1+1/4 | 45.8 | 53.5 | 61.1 | 68.8 | 76.4 | 84.0 | 91.7 | 107 | 122 | 138 | 153 | 168 |
13⁄8 | 41.7 | 48.6 | 55.6 | 62.5 | 69.5 | 76.4 | 83.3 | 97.2 | 111 | 125 | 139 | 153 |
11⁄2 | 38.2 | 44.6 | 50.9 | 57.3 | 63.7 | 70.0 | 76.4 | 89.1 | 102 | 115 | 127 | 140 |
15⁄8 | 35.3 | 41.1 | 47.0 | 52.9 | 58.8 | 64.6 | 70.5 | 82.3 | 94.0 | 106 | 118 | 129 |
13⁄4 | 32.7 | 38.2 | 43.7 | 49.1 | 54.6 | 60.0 | 65.5 | 76.4 | 87.3 | 98.2 | 109 | 120 |
17⁄8 | 30.6 | 35.7 | 40.7 | 45.8 | 50.9 | 56.0 | 61.1 | 71.3 | 81.5 | 91.7 | 102 | 112 |
2 | 28.7 | 33.4 | 38.2 | 43.0 | 47.7 | 52.5 | 57.3 | 66.8 | 76.4 | 85.9 | 95.5 | 105 |
21⁄4 | 25.5 | 29.7 | 34.0 | 38.2 | 42.4 | 46.7 | 50.9 | 59.4 | 67.9 | 76.4 | 84.9 | 93.4 |
21⁄2 | 22.9 | 26.7 | 30.6 | 34.4 | 38.2 | 42.0 | 45.8 | 53.5 | 61.1 | 68.8 | 76.4 | 84.0 |
23⁄4 | 20.8 | 24.3 | 27.8 | 31.3 | 34.7 | 38.2 | 41.7 | 48.6 | 55.6 | 62.5 | 69.5 | 76.4 |
3 | 19.1 | 22.3 | 25.5 | 28.6 | 31.8 | 35.0 | 38.2 | 44.6 | 50.9 | 57.3 | 63.7 | 70.0 |
31⁄4 | 17.6 | 20.6 | 23.5 | 26.4 | 29.4 | 32.3 | 35.3 | 41.1 | 47.0 | 52.9 | 58.8 | 64.6 |
31⁄2 | 16.4 | 19.1 | 21.8 | 24.5 | 27.3 | 30.0 | 32.7 | 38.2 | 43.7 | 49.1 | 54.6 | 60.0 |
33⁄4 | 15.3 | 17.8 | 20.4 | 22.9 | 25.5 | 28.0 | 30.6 | 35.7 | 40.7 | 45.8 | 50.9 | 56.0 |
4 | 14.3 | 16.7 | 19.1 | 21.5 | 23.9 | 26.3 | 28.7 | 33.4 | 38.2 | 43.0 | 47.7 | 52.5 |
41⁄2 | 12.7 | 14.9 | 17.0 | 19.1 | 21.2 | 23.3 | 25.5 | 29.7 | 34.0 | 38.2 | 42.4 | 46.7 |
5 | 11.5 | 13.4 | 15.3 | 17.2 | 19.1 | 21.0 | 22.9 | 26.7 | 30.6 | 34.4 | 38.2 | 42.0 |
51⁄2 | 10.4 | 12.2 | 13.9 | 15.6 | 17.4 | 19.1 | 20.8 | 24.3 | 27.8 | 31.3 | 34.7 | 38.2 |
6 | 9.5 | 11.1 | 12.7 | 14.3 | 15.9 | 17.5 | 19.1 | 22.3 | 25.5 | 28.6 | 31.8 | 35.0 |
61⁄2 | 8.8 | 10.3 | 11.8 | 13.2 | 14.7 | 16.2 | 17.6 | 20.6 | 23.5 | 26.4 | 29.4 | 32.3 |
7 | 8.2 | 9.5 | 10.9 | 12.3 | 13.6 | 15.0 | 16.4 | 19.1 | 21.8 | 24.5 | 27.3 | 30.0 |
71⁄2 | 7.6 | 8.9 | 10.2 | 11.5 | 12.7 | 14.0 | 15.3 | 17.8 | 20.4 | 22.9 | 25.5 | 28.0 |
8 | 7.2 | 8.4 | 9.5 | 10.7 | 11.9 | 13.1 | 14.3 | 16.7 | 19.1 | 21.5 | 23.9 | 26.3 |
81⁄2 | 6.7 | 7.9 | 9.0 | 10.1 | 11.2 | 12.4 | 13.5 | 15.7 | 18.0 | 20.2 | 22.5 | 24.7 |
9 | 6.4 | 7.4 | 8.5 | 9.5 | 10.6 | 11.7 | 12.7 | 14.9 | 17.0 | 19.1 | 21.2 | 23.3 |
91⁄2 | 6.0 | 7.0 | 8.0 | 9.1 | 10.1 | 11.1 | 12.1 | 14.1 | 16.1 | 18.1 | 20.1 | 22.1 |
10 | 5.7 | 6.7 | 7.6 | 8.6 | 9.5 | 10.5 | 11.5 | 13.4 | 15.3 | 17.2 | 19.1 | 21.0 |
11 | 5.2 | 6.1 | 6.9 | 7.8 | 8.7 | 9.5 | 10.5 | 11.5 | 13.4 | 15.3 | 17.2 | 19.1 |
12 | 4.8 | 5.6 | 6.4 | 7.2 | 8.0 | 8.8 | 9.5 | 11.1 | 12.7 | 14.3 | 15.9 | 17.5 |
13 | 4.4 | 5.1 | 5.9 | 6.6 | 7.3 | 8.1 | 8.8 | 10.3 | 11.8 | 13.2 | 14.7 | 16.2 |
14 | 4.1 | 4.8 | 5.5 | 6.1 | 6.8 | 7.5 | 8.2 | 9.5 | 10.9 | 12.3 | 13.6 | 15.0 |
15 | 3.8 | 4.5 | 5.1 | 5.7 | 6.4 | 7.0 | 7.6 | 8.9 | 10.2 | 11.5 | 12.7 | 14.0 |
16 | 3.6 | 4.2 | 4.8 | 5.4 | 6.0 | 6.6 | 7.2 | 8.4 | 9.5 | 10.7 | 11.9 | 13.1 |
17 | 3.4 | 3.9 | 4.5 | 5.1 | 5.6 | 6.2 | 6.7 | 7.9 | 9.0 | 10.1 | 11.2 | 12.4 |
18 | 3.2 | 3.7 | 4.2 | 4.8 | 5.3 | 5.8 | 6.4 | 7.4 | 8.5 | 9.5 | 10.6 | 11.7 |
15 | 17.5 | 20 | 22.5 | 25 | 27.5 | 30 | 35 | 40 | 45 | 50 | 55 |