Determining the cutting speed and the speed
Version 1.0 dated 2019-01-08Page 60 Translation of the original instructions
GB
Drilling_VC_GB_basic.fm
OPTIMUM
MASCHINEN - GERMANY
®
8 Determining the cutting speed and the speed
8.1 Table cutting speeds / infeed
8.2 Speed table
Material table
Material to be processed
Recommended
cutting speed
Vc in m/min
Recommended infeed f
in mm/revolution
Drill bit diameter d in mm
2...3 >3...6 >6...12 >12...25 >25...50
Unalloyed construction steels
< 700 N/mm²
30 - 35 0.05 0.10 0.15 0.25 0.35
Alloyed construction steels
> 700 N/mm²
20 - 25 0.04 0.08 0.10 0.15 0.20
Alloyed steels
< 1000 N/mm²
20 - 25 0.04 0.08 0.10 0.15 0.20
Steels, low stability
< 800 N/mm²
40 0.05 0.10 0.15 0.25 0.35
Steel, high stability
> 800 N/mm²
20 0.04 0.08 0.10 0.15 0.20
non-rust steels
> 800 N/mm²
12 0.03 0.06 0.08 0.12 0.18
Cast iron
< 250 N/mm²
15 - 25 0.10 0.20 0.30 0.40 0.60
Cast iron
> 250 N/mm²
10 - 20 0.05 0.15 0.25 0.35 0.55
CuZn alloy
brittle
60 - 100 0.10 0.15 0.30 0.40 0.60
CuZn alloy
ductile
35 - 60 0.05 0.10 0.25 0.35 0.55
Aluminum alloy
up to 11% Si
30 - 50 0.10 0.20 0.30 0.40 0.60
Thermoplastics 20 - 40 0.05 0.10 0.20 0.30 0.40
Thermosetting materials with
organic filling
15 - 35 0.05 0.10 0.20 0.30 0.40
Thermosetting materials with
anorganic filling
15 - 25 0.05 0.10 0.20 0.30 0.40
Vc
in m/
min
4 6 8 10 12 15 18 20 25 30 35 40 50 60 80 100
Drill
bit Ø
in
mm
Speed n in rpm
1,0 1274 1911 2548 3185 3822 4777 5732 6369 7962 9554 11146 12739 15924 19108 25478 31847
1,5 849 1274 1699 2123 2548 3185 3822 4246 5308 6369 7431 8493 10616 12739 16985 21231
2,0 637 955 1274 1592 1911 2389 2866 3185 3981 4777 5573 6369 7962 9554 12739 15924
2,5 510 764 1019 1274 1529 1911 2293 2548 3185 3822 4459 5096 6369 7643 10191 12739
3,0 425 637 849 1062 1274 1592 1911 2123 2654 3185 3715 4246 5308 6369 8493 10616
3,5 364 546 728 910 1092 1365 1638 1820 2275 2730 3185 3640 4550 5460 7279 9099
4,0 318 478 637 796 955 1194 1433 1592 1990 2389 2787 3185 3981 4777 6369 7962
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