Page 663 - Iscar

USER GUIDE
GUNDRILLS

Recommended Machining Conditions

Material Groups

Tensile Strength Hardness Mtl.
ISO Material Condition Rm [N/mm2] HB No.
< 0.25 %C Annealed 420 125 1
> = 0.25 %C Annealed 650 190 2
Non-alloy steel
and cast steel, < 0.55 %C Quenched and tempered 850 250 3
free cutting steel
> = 0.55 %C Annealed 750 220 4
Quenched and tempered 1000 300 5
P Annealed 600 200 6
Low alloy steel and cast steel 930 275 7
(less than 5%
alloying elements) Quenched and tempered 1000 300 8
1200 350 9
High alloy steel, cast steel Annealed 680 200 10
and tool steel Quenched and tempered 1100 325 11
Ferritic/pearlitic 180 15
Grey cast iron (GG)
Pearlitic 260 16
Ferritic 160 17
K Nodular cast iron (GGG)
Pearlitic 250 18
Ferritic 130 19
Malleable cast iron
Pearlitic 230 20

Recommended Machining Conditions for SUMOGUN
SUMOGUN
Feed vs. Drill Diameter
Mtl. Vc D=10-11.9 D=12-13.9 D=14-15.9 D=16-19.9 D=20-25.9
No. m/min mm/rev
1 60-90-110
2 60-80-100 0.10 0.11 0.13 0.13 0.14
3 60-80-100 0.14 0.16 0.18 0.19 0.20
4 50-70-90 0.18 0.20 0.24 0.25 0.27
5 40-50-70
6 50-70-100
0.10 0.10 0.12 0.12 0.13
7 50-70-90
0.14 0.15 0.17 0.18 0.20
8 40-50-70
0.18 0.20 0.22 0.24 0.26
9 30-40-50
10 40-50-70 0.09 0.09 0.10 0.10 0.11
0.14 0.14 0.15 0.16 0.17
11 30-40-60
0.18 0.18 0.20 0.22 0.24
15 60-80-100
16 60-90-100
0.16 0.18 0.18 0.18 0.18
17 60-100-120
0.20 0.22 0.22 0.22 0.22
18 60-90-110
0.25 0.28 0.28 0.28 0.28
19 70-100-120
20 60-90-110
Recommended cutting data

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