|
|
Conversion Table,Surface
Feet Per Minute To Revolutions Minute
GO BACK to USE
GUIDE
Surface Feet
Per Minute |
20 |
25 |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
110 |
120 |
130 |
140 |
150 |
| Tap Size |
Revolutions Per Minute
|
| 0 |
1273 |
1592 |
1910 |
2546 |
3183 |
3820 |
4456 |
5093 |
5730 |
6366 |
7003 |
7639 |
8276 |
8913 |
9549 |
| 1 |
1047 |
1308 |
1570 |
2093 |
2617 |
3140 |
3663 |
4186 |
4710 |
5233 |
5756 |
6279 |
6808 |
7326 |
7849 |
| 2 |
888 |
1110 |
1333 |
1777 |
2221 |
2665 |
3109 |
3554 |
3999 |
4442 |
4886 |
5330 |
5774 |
6218 |
6662 |
| 3 |
772 |
964 |
1157 |
1543 |
1929 |
2315 |
2701 |
3086 |
3472 |
3858 |
4244 |
4629 |
5015 |
5401 |
5787 |
| 4 |
682 |
853 |
1023 |
1364 |
1705 |
2046 |
2387 |
2728 |
3069 |
3411 |
3751 |
4092 |
4434 |
4775 |
5116 |
| 5 |
611 |
764 |
917 |
1222 |
1528 |
1833 |
2139 |
2445 |
2750 |
3056 |
3361 |
3667 |
3973 |
4278 |
4584 |
| 6 |
553 |
691 |
829 |
1106 |
1382 |
1658 |
1934 |
2211 |
2487 |
2764 |
3040 |
3316 |
3592 |
3869 |
4145 |
| 8 |
466 |
583 |
699 |
932 |
1165 |
1398 |
1631 |
1864 |
2097 |
2330 |
2563 |
2796 |
3029 |
3262 |
3495 |
| 10 |
402 |
502 |
603 |
804 |
1005 |
1205 |
1406 |
1607 |
1808 |
2009 |
2210 |
2411 |
2612 |
2813 |
3014 |
| 12 |
354 |
442 |
531 |
707 |
884 |
1061 |
1238 |
1415 |
1592 |
1769 |
1945 |
2122 |
2300 |
2476 |
2653 |
| 1/4 |
306 |
382 |
458 |
611 |
764 |
917 |
1070 |
1222 |
1375 |
1528 |
1681 |
1833 |
1986 |
2139 |
2292 |
| 5/16 |
245 |
306 |
367 |
489 |
611 |
733 |
856 |
978 |
1100 |
1222 |
1345 |
1467 |
1589 |
1711 |
1833 |
| 3/8 |
204 |
255 |
306 |
407 |
509 |
611 |
713 |
815 |
917 |
1019 |
1120 |
1222 |
1324 |
1426 |
1528 |
| 7/16 |
175 |
219 |
262 |
349 |
437 |
524 |
611 |
698 |
786 |
873 |
960 |
1048 |
1135 |
1222 |
1310 |
| 1/2 |
153 |
191 |
229 |
306 |
382 |
458 |
535 |
611 |
688 |
764 |
840 |
917 |
993 |
1070 |
1146 |
| 9/16 |
137 |
172 |
206 |
275 |
344 |
412 |
481 |
550 |
619 |
687 |
756 |
825 |
893 |
963 |
1031 |
| 5/8 |
122 |
153 |
183 |
244 |
306 |
367 |
428 |
489 |
550 |
611 |
672 |
733 |
794 |
856 |
917 |
| 3/4 |
102 |
128 |
153 |
203 |
255 |
306 |
357 |
407 |
458 |
509 |
560 |
611 |
662 |
713 |
764 |
| 7/8 |
87 |
109 |
131 |
175 |
218 |
262 |
306 |
350 |
392 |
437 |
480 |
524 |
568 |
611 |
655 |
| 1 |
76 |
96 |
115 |
153 |
191 |
230 |
268 |
306 |
344 |
382 |
420 |
458 |
497 |
535 |
573 |
Formula Example
(1/4-20 Tap)
SFM x 3.82 20 x 3.82
RPM = ！！！！！！ = ！！！！！！ = 305 RPM
Tap DIA. 0 .250
MILLIMETERS TO INCHES
| Millimeters |
Inches |
Millimeters |
Inches |
Millimeters |
Inches |
| .05 |
.00197 |
.7 |
.02756 |
5 |
.19685 |
| .1 |
.00394 |
.8 |
.03150 |
6 |
.23622 |
| .2 |
.00787 |
.9 |
.03543 |
7 |
.27559 |
| .3 |
.01181 |
1.0 |
.03937 |
8 |
.31496 |
| .4 |
.01575 |
2 |
.07874 |
9 |
.35433 |
| .5 |
.01969 |
3 |
.11811 |
10 |
.39370 |
| .6 |
.02362 |
4 |
.15748 |
|
|
|
|
|
|
