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Cutting Speeds
Cutting Speeds Conversion Table
Diameter
Feet Per Minute
More...
10
15
20
25
30
40
50
70
100
Inches
M/M's
3
4.5
6
7.5
9
12
15
21
30
1/16
1.6
611
916
1222
1527
1833
2445
3056
4278
6112
2
485
728
970
1212
1455
1941
2426
3397
4853
3/32
2.5
407
611
815
1017
1222
1630
2037
2852
4075
1/8
3
306
458
611
765
917
1222
1528
2139
3056
3.5
277
415
554
692
831
1108
1386
1940
2772
5/32
4
244
367
489
610
733
978
1222
1711
2445
4.5
222
333
444
555
666
889
1111
1555
2222
3/16
5
204
306
407
510
611
815
1019
1426
2037
1/4
6
153
229
306
382
458
611
764
1070
1528
7
139
209
278
347
417
554
693
970
1386
5/16
8
122
183
244
305
367
489
611
856
1222
3/8
10
102
153
204
255
306
407
509
713
1019
Jul-16
11
87
131
175
217
262
349
437
611
873
01-Feb
12
76
115
153
190
229
306
382
535
764
Sep-16
14
68
102
134
170
204
272
340
475
679
05-Aug
16
61
91
122
152
183
245
306
428
611
Nov-16
18
54
81
108
135
162
216
270
377
539
03-Apr
19
51
77
102
127
153
204
255
357
509
13/16
20
49
73
98
123
147
194
243
339
485
07-Aug
22
44
65
87
110
131
175
218
306
437
15/16
24
40
60
80
100
120
162
202
283
404
1
25
38
58
76
95
115
153
191
267
382
1.1/16
27
36
54
72
90
108
144
180
251
359
1.3/16
30
32
48
64
80
96
129
162
227
324
1.1/4
32
31
46
61
78
92
122
153
214
306
1.5/16
33
29
44
58
73
87
118
147
206
294
1.3/8
35
28
41
56
70
83
111
139
222
278
1.7/16
36
27
40
54
68
81
108
135
189
270
1.1/2
38
25
38
51
63
76
102
127
178
255
1.9/16
39
24
36
48
60
72
100
120
168
240
1.5/8
42
24
35
47
58
71
94
118
165
235
1.3/4
45
22
33
44
55
65
87
109
153
218
1.7/8
48
20
31
41
50
61
82
102
143
204
2
52
19
29
38
48
57
76
96
134
191
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