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USER GUIDE
Kc Values
ISCAR Material Group kc Value N/mm 2 kc Value kpsi
1 1350 196
2 1500 218
3 1675 243 THREAD DRILLING
4 1700 247
5 1900 276
6 1775 257
7 1675 243
8 1725 250
9 1800 261
10 2450 355
11 2500 363
12 1875 272
13 1875 272
14 2150 312
15 1150 167
16 1350 196
17 1225 178
18 1350 196
19 1225 178
20 1450 206
21 700 102
22 800 116
23 700 102
26 700 102
27 750 109
28 700 102
31 2600 377
32 3100 450
33 3300 479
34 3300 479
35 3300 479
36 1700 247
37 2110 306
38 4600 667
39 4700 682
40 4600 667
41 4500 653
Tool Family Dia. (mm) Dia. (in) L/D Ratio Hole accuracy*
DR 12-80 .469-3.15 2XD-5XD IT 12-13
SUMOCHAM 4-32.9 .157-1.26 1.5XD-12XD IT 8-9
CHAM-IQ-DRILL 33-40 1.299-1.575 1.5XD-8XD IT 8-9
COMBICHAM 26-50 1.125-2.00 5XD IT 9-10
LOGIQ 12-25 .472-.984 1.5XD-8XD IT 8-9
MODUDRILL 33-40 1.299-1.575 3XD-12XD IT 9-10
* ISO tolerance grade, provided in average cutting conditions
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