Cutter Diameter
High Tensil Steel
Mild Steel
INCH
RPM
RPM
7/16
262
698
1/2
229
611
9/16
204
543
5/8
183
489
11/16
167
444
3/4
153
407
13/16
141
376
7/8
131
349
15/16
122
326
1
115
306
1.1/16
108
288
1.1/8
102
272
1.3/16
96
257
1.1/4
92
244
1.5/16
87
233
1.3/8
83
222
1.7/16
80
213
1.1/2
76
204
1.9/16
73
196
1.5/8
71
188
1.11/16
68
181
1.3/4
65
175
1.13/16
63
169
1.7/8
61
163
1.15/16
59
158
2
57
153
2.1/16
56
148
2.1/8
54
144
2.3/16
52
140
2.1/4
51
136
2.5/16
50
132
2.3/8
48
129
2.7/16
47
125
2.1/2
46
122
2.9/16
45
119
2.5/8
44
116
2.11/16
43
114
2.3/4
42
111
2.13/16
41
109
2.7/8
40
106
2.15/16
39
104
3
38
102
3.1/16
37
100
3.1/8
37
98
3.3/16
36
96
3.1/4
35
94
3.5/16
35
92
3.3/8
34
91
3.7/16
33
89
3.1/2
33
87
3.9/16
32
86
3.5/8
32
84
3.11/16
31
83
3.3/4
31
81
3.13/16
30
80
3.7/8
30
79
3.15/16
29
78
4
29
76
Cutter Diameter
High Tensil Steel
Mild Steel
MM
RPM
RPM
12
239
637
14
205
546
16
179
477
18
159
424
20
143
382
22
130
347
24
119
318
26
110
294
28
102
273
30
95
255
32
90
239
34
84
225
36
80
212
38
75
201
40
72
191
42
68
182
44
65
174
46
62
166
48
60
159
50
57
153
52
55
147
54
53
141
56
51
136
58
49
132
60
48
127
62
46
123
64
45
119
66
43
116
68
42
112
70
41
109
72
40
106
74
39
103
76
38
101
78
37
98
80
36
95
82
35
93
84
34
91
86
33
89
88
33
87
90
32
85
92
31
83
94
30
81
96
30
80
98
29
78
100
29
76
 
         



        
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