TM 9-3417-213-14 & P
INSTRUCTION MANUAL
XI.
GENERAL SPEED RECOMMENDATIONS:
FEET PER MINUTE
ROUGH
ROUGH AND
LIGHT AND
MATERIAL TO BE CUT
CUT
FINISH
FINISH CUT
Cast Iron-Soft-(Under 200 Brinnell
70
80-90
120
Cast Iron-Med.-(200-300 Brinnell)
55
60-70
90
Cast Iron-Hard-(over 200 Brinnell)
40
50-60
70
Steel (Chrome Nickel 40-45 Shore)
30
40
50
Steel (Stainless)
60
80
90
Steel (Low Carbon)
80
90
140
Steel (High Carbon)
40
50
70
Bronze (Medium)
90
120
150
Bronze (Hard)
65
90
130
Brass (Hard)
100
150
200
Copper
150
200
300
Duraluminum
400
---
600
Aluminum
600
---
1000
XII.
TABLE OF CUTTING SPEEDS AND FEEDS
FEET PER
MINUTE
15
20
25
30
40
50
60
70
80
90
100
DIAMETER,
INCHES
REVOLUTIONS PER MINUTE
1/16"
917
1222
1528
1833
2445
3056
3667
4278
4889
5500
6112
1/8"
458
611
764
917
1222
1528
1833
2139
2445
2750
3056
3/16"
306
407
509
611
815
1019
1222
1426
1630
1833
2037
1/4"
229
306
382
458
611
764
917
1070
1375
1375
1528
5/16"
183
244
306
367
489
611
733
856
978
1100
1222
3/8"
153
204
255
306
407
509
611
713
815
917
1019
7/ 16"
131
175
218
262
349
437
524
611
698
786
873
1/2"
115
153
191
229
306
382
458
535
611
688
764
5/8"
91
122
153
183
244
306
367
428
489
550
611
3/ 4"
76
102
127
153
204
255
306
357
407
458
509
7/8"
65
87
109
131
175
218
262
306
349
393
437
1"
57
76
95
115
153
191
229
267
306
344
382
1-1/8"
50
67
84
102
136
170
204
238
272
306
340
1-1/4"
45
61
76
91
122
153
183
214
244
275
306
1-3/8"
41
55
69
83
111
139
167
194
222
250
278
1-1/2"
38
50
63
76
102
127
153
178
204
229
255
1-5/8"
35
47
58
70
94
118
141
165
188
212
235
1-3/4"
32
43
54
65
87
109
131
153
175
196
218
1-7/8"
30
40
50
61
81
102
122
143
163
183
204
2"
28
38
47
57
76
95
115
134
153
172
191
20