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LFTA - High performance drills
CUTTING PARAMETERS
INFO
238LFTA
Material Group
ISO 513
P1

P2
P3

P4
M1

Hardness/Rm 500-700 N/mm² 600-1000 N/mm² < 750 N/mm²
Vc (m/min) 30-40 20-30 14-18
D
(mm) n
(rpm)
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 5570
3720
2790
2230
1860
1590
1390
1240
1110
1010
930
860
800
740
700
660
620
590
560
fn
Vf
(mm/rev) (mm/min)
0.054
0.076
0.097
0.119
0.140
0.162
0.184
0.205
0.227
0.248
0.270
0.292
0.313
0.335
0.356
0.378
0.400
0.421
0.443
300
280
270
260
260
260
260
250
250