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| Cutting speed V (m/min.) |
| D |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
15 |
20 |
25 |
30 |
35 |
40 |
45 |
50 |
55 |
60 |
80 |
100 |
| mm |
R.P.M. |
| 0.5 |
1910 |
2546 |
3183 |
3820 |
5093 |
6366 |
7639 |
9549 |
12732 |
15915 |
19099 |
22282 |
25465 |
28648 |
31831 |
35014 |
38197 |
50930 |
63662 |
| 0.8 |
1194 |
1592 |
1989 |
2387 |
3183 |
3979 |
4775 |
5968 |
7958 |
9947 |
11937 |
13926 |
15915 |
17905 |
19894 |
21884 |
23873 |
31831 |
39789 |
| 1 |
955 |
1273 |
1592 |
1910 |
2546 |
3183 |
3820 |
4775 |
6366 |
7958 |
9549 |
11141 |
12732 |
14324 |
15915 |
17507 |
19099 |
25465 |
31831 |
| 1.2 |
796 |
1061 |
1326 |
1592 |
2122 |
2653 |
3183 |
3979 |
5305 |
6631 |
7958 |
9284 |
10610 |
11937 |
13263 |
14589 |
15915 |
21221 |
26526 |
| 1.5 |
637 |
849 |
1061 |
1273 |
1698 |
2122 |
2546 |
3183 |
4244 |
5305 |
6366 |
7427 |
8488 |
9549 |
10610 |
11671 |
12732 |
16977 |
21221 |
| 2 |
477 |
637 |
796 |
955 |
1273 |
1592 |
1910 |
2387 |
3183 |
3979 |
4775 |
5570 |
6366 |
7162 |
7958 |
8754 |
9549 |
12732 |
15915 |
| 4 |
239 |
318 |
398 |
477 |
637 |
796 |
955 |
1194 |
1592 |
1989 |
2387 |
2785 |
3183 |
3581 |
3979 |
4377 |
4775 |
6366 |
7958 |
| 6 |
159 |
212 |
265 |
318 |
424 |
531 |
637 |
796 |
1061 |
1326 |
1592 |
1857 |
2122 |
2387 |
2653 |
2918 |
3183 |
4244 |
5305 |
| 8 |
119 |
159 |
199 |
239 |
318 |
398 |
477 |
597 |
796 |
995 |
1194 |
1393 |
1592 |
1790 |
1989 |
2188 |
2387 |
3183 |
3979 |
| 10 |
95 |
127 |
159 |
191 |
255 |
318 |
382 |
477 |
637 |
796 |
955 |
1114 |
1273 |
1432 |
1592 |
1751 |
1910 |
2546 |
3183 |
| 12 |
80 |
106 |
133 |
159 |
212 |
265 |
318 |
398 |
531 |
663 |
796 |
928 |
1061 |
1194 |
1326 |
1459 |
1592 |
2122 |
2653 |
| 14 |
68 |
91 |
114 |
136 |
182 |
227 |
273 |
341 |
455 |
568 |
682 |
796 |
909 |
1023 |
1137 |
1251 |
1364 |
1819 |
2274 |
| 16 |
60 |
80 |
99 |
119 |
159 |
199 |
239 |
298 |
398 |
497 |
597 |
696 |
796 |
895 |
995 |
1094 |
1194 |
1592 |
1989 |
| 18 |
53 |
71 |
88 |
106 |
141 |
177 |
212 |
265 |
354 |
442 |
531 |
619 |
707 |
796 |
884 |
973 |
1061 |
1415 |
1768 |
| 20 |
48 |
64 |
80 |
95 |
127 |
159 |
191 |
239 |
318 |
398 |
477 |
557 |
637 |
716 |
796 |
875 |
955 |
1273 |
1592 |
| 22 |
43 |
58 |
72 |
87 |
116 |
145 |
174 |
217 |
289 |
362 |
434 |
506 |
579 |
651 |
723 |
796 |
868 |
1157 |
1447 |
| 24 |
40 |
53 |
66 |
80 |
106 |
133 |
159 |
199 |
265 |
332 |
398 |
464 |
531 |
597 |
663 |
729 |
796 |
1061 |
1326 |
| 26 |
37 |
49 |
61 |
73 |
98 |
122 |
147 |
184 |
245 |
306 |
367 |
428 |
490 |
551 |
612 |
673 |
735 |
979 |
1224 |
| 28 |
34 |
45 |
57 |
68 |
91 |
114 |
136 |
171 |
227 |
284 |
341 |
398 |
455 |
512 |
568 |
625 |
682 |
909 |
1137 |
| 30 |
32 |
42 |
53 |
64 |
85 |
106 |
127 |
159 |
212 |
265 |
318 |
371 |
424 |
477 |
531 |
584 |
637 |
849 |
1061 |
| 32 |
30 |
40 |
50 |
60 |
80 |
99 |
119 |
149 |
199 |
249 |
298 |
348 |
398 |
448 |
497 |
547 |
597 |
796 |
995 |
| 34 |
28 |
37 |
47 |
56 |
75 |
94 |
112 |
140 |
187 |
234 |
281 |
328 |
374 |
421 |
468 |
515 |
562 |
749 |
936 |
| 36 |
27 |
35 |
44 |
53 |
71 |
88 |
106 |
133 |
177 |
221 |
265 |
309 |
354 |
398 |
442 |
486 |
531 |
707 |
884 |
| 38 |
25 |
34 |
42 |
50 |
67 |
84 |
101 |
126 |
168 |
209 |
251 |
293 |
335 |
377 |
419 |
461 |
503 |
670 |
838 |
| 40 |
24 |
32 |
40 |
48 |
64 |
80 |
95 |
119 |
159 |
199 |
239 |
279 |
318 |
358 |
398 |
438 |
478 |
637 |
796 |
| 42 |
23 |
30 |
38 |
45 |
61 |
76 |
91 |
114 |
152 |
189 |
227 |
265 |
303 |
341 |
379 |
417 |
455 |
606 |
758 |
| 44 |
22 |
29 |
36 |
43 |
58 |
72 |
87 |
109 |
145 |
181 |
217 |
253 |
289 |
326 |
362 |
398 |
434 |
579 |
723 |
| 46 |
21 |
28 |
35 |
42 |
55 |
69 |
83 |
104 |
138 |
173 |
208 |
242 |
277 |
311 |
346 |
381 |
415 |
554 |
692 |
| 48 |
20 |
27 |
33 |
40 |
53 |
66 |
80 |
99 |
133 |
166 |
199 |
232 |
265 |
298 |
332 |
365 |
398 |
351 |
663 |
| 50 |
19 |
25 |
32 |
38 |
51 |
64 |
76 |
95 |
127 |
159 |
191 |
223 |
255 |
286 |
318 |
350 |
382 |
509 |
637 |
| 52 |
18 |
24 |
31 |
37 |
49 |
61 |
73 |
92 |
122 |
153 |
184 |
214 |
245 |
275 |
306 |
337 |
367 |
490 |
612 |
| 54 |
18 |
24 |
29 |
35 |
47 |
59 |
71 |
88 |
118 |
147 |
177 |
206 |
236 |
265 |
295 |
324 |
354 |
472 |
589 |
| 56 |
17 |
23 |
28 |
34 |
45 |
57 |
68 |
85 |
114 |
142 |
171 |
199 |
227 |
256 |
284 |
313 |
341 |
455 |
568 |
| 58 |
16 |
22 |
27 |
33 |
44 |
55 |
66 |
82 |
110 |
137 |
165 |
192 |
220 |
247 |
274 |
302 |
329 |
439 |
549 |
| 60 |
16 |
21 |
27 |
32 |
42 |
53 |
64 |
80 |
106 |
133 |
159 |
186 |
212 |
239 |
265 |
292 |
318 |
424 |
531 |
| 62 |
|
21 |
26 |
31 |
41 |
51 |
62 |
77 |
103 |
128 |
154 |
180 |
205 |
231 |
257 |
282 |
308 |
411 |
513 |
| 64 |
|
20 |
25 |
30 |
40 |
50 |
60 |
75 |
99 |
124 |
149 |
174 |
199 |
224 |
249 |
274 |
298 |
398 |
497 |
| 66 |
|
19 |
24 |
29 |
39 |
48 |
58 |
72 |
96 |
121 |
145 |
169 |
193 |
217 |
241 |
265 |
289 |
386 |
482 |
| 68 |
|
19 |
23 |
28 |
37 |
47 |
56 |
70 |
94 |
117 |
140 |
164 |
187 |
211 |
234 |
257 |
281 |
374 |
468 |
| 70 |
|
18 |
23 |
27 |
36 |
45 |
55 |
68 |
91 |
114 |
136 |
159 |
182 |
205 |
227 |
250 |
273 |
364 |
455 |
| 72 |
|
18 |
22 |
27 |
35 |
44 |
53 |
66 |
88 |
111 |
133 |
155 |
177 |
199 |
221 |
243 |
265 |
354 |
442 |
| 74 |
|
17 |
22 |
26 |
34 |
43 |
52 |
65 |
86 |
108 |
129 |
151 |
172 |
194 |
215 |
237 |
258 |
344 |
430 |
| 76 |
|
17 |
21 |
25 |
34 |
42 |
50 |
63 |
84 |
105 |
126 |
147 |
168 |
188 |
209 |
230 |
251 |
335 |
419 |