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RPM CHART FOR ALL ALFRA CUTTERS

 

FOR HSS-Co-Eco CUTTER
Material
Unalloyed Steel
up to
700 N/mm²
Alloyed Steel
up to
1000N/mm²
Alu alloy
Vc=m/min
Lubricants
30
Cutting oil
20
Cutting oil
30
Cutting oil
Ø mm
Ø inch
R/min
R/min
R/min
12
15/32
796
531
796
13
33/64
735
490
735
14
35/64
682
455
682
15
19/32
637
425
637
16
5/8
597
398
597
17
43/64
562
375
562
18
45/64
531
354
531
19
3/4
503
335
503
20
25/32
478
318
478
21
53/64
455
303
455
22
7/8
434
290
434
23
29/32
415
277
415
24
15/16
398
265
398
25
63/64
382
255
382
26
1 1/32
367
245
367
27
1 1/16
354
236
354
28
1 3/32
341
227
341
29
1 9/64
329
220
329
30
1 3/16
318
212
318
31
1 7/32
308
205
308
32
1 17/64
299
199
299
33
1 19/64
290
193
290
34
1 11/32
281
187
281
35
1 3/8
273
182
273
36
1 27/64
265
177
265
37
1 29/64
258
172
258
38
1 1/2
251
168
251
39
1 17/32
245
163
245
40
1 37/64
239
159
239
41
1 39/64
233
155
233
42
1 21/32
227
152
227
43
1 11/16
222
148
222
44
1 47/64
217
145
217
45
1 25/32
212
142
212
46
1 13/16
208
138
208
47
1 55/64
203
136
203
48
1 57/64
199
133
199
49
1 15/16
195
130
195
50
1 31/32
191
127
191
60
2 3/8
159
106
159

 

 

 

FOR TCT CUTTER
Material
Unalloyed Steel
up to
700 N/mm²
Alloyed Steel
up to
1000N/mm²
Alu alloy
Vc=m/min
Lubricants
50
Cutting oil
35
Cutting oil
60
Cutting oil
Ø mm
Ø inch
R/min
R/min
R/min
18
45/64
885
619
1062
19
3/4
838
587
1006
20
25/32
796
557
955
21
53/64
758
531
910
22
7/8
724
507
869
23
29/32
692
485
831
24
15/16
663
464
796
25
63/64
637
446
764
26
1 1/32
612
429
735
27
1 1/16
590
413
708
28
1 3/32
569
398
682
29
1 9/64
549
384
659
30
1 3/16
531
372
637
31
1 7/32
514
360
616
32
117/64
498
348
597
33
1 19/64
483
338
579
34
1 11/32
468
328
562
35
1 3/8
455
318
546
36
1 27/64
442
310
531
37
1 29/64
430
301
531
38
1 1/2
419
293
503
39
1 17/32
408
286
490
40
1 37/64
398
279
478
41
1 39/64
388
272
466
42
1 21/32
379
265
455
43
1 11/16
370
259
444
44
1 47/64
362
253
434
45
1 25/32
354
548
425
46
1 13/16
346
242
415
47
1 55/64
339
237
407
48
1 57/64
332
232
398
49
1 15/16
325
227
390
50
1 31/32
318
223
382
55
2 5/32
290
203
347
60
2 3/8
265
186
318
65
2 9/16
245
171
294
70
2 3/4
227
159
273
75
2 61/64
212
149
255
80
3 5/32
199
139
239
85
 3 11/32
187
131
225
90
 3 35/64
177
124
212
95
 3 47/64
168
117
201
100
 3 15/16
159
111
191
     
   
 
 
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