Operation
Version 1.0.1 - 2020-08-18
24
Translation of original instruction
DP33
EN
D
P
33_G
B.
fm
4.9.1 Speed table
~ 50Hz connection
4.10
Standard values for speeds with HSS – Eco – twist drills
The above data are standard values. In some cases it may be advantageous to increase or
decrease these values.
A cooling or lubricating agent should be used when drilling.
For stainless materials (e.g. VA – or NIRO steel sheets) do not centre, as this will result in
the material compacting and the drill bit rapidly becoming blunt.
The workpieces need to be tensed inflexibly and stably (vice, screw clamp).
Drive
Material
Drill diameter
Cooling
3)
2
3
4
5
6
7
8
9
10
Steel, unalloyed,
up to 600 N/mm
2
n
1)
5600
3550
2800
2240
2000
1600
1400
1250
1120
E
f
2)
0.04
0.063
0.08
0.10
0.125 0.125
0.16
0.16
0.20
Mild steel, alloyed, tempered,
up to 900N/mm
2
n
3150
2000
1600
1250
1000
900
800
710
630
E/oil
f
0.032
0.05
0.063
0.08
0.10
0.10
0.125 0.125
0.16
Mild steel, alloyed, tempered,
up to 1200 N/mm
2
n
2500
1600
1250
1000
800
710
630
560
500
Oil
f"
0.032
0.04
0.05
0.063
0.08
0.10
0.10
0.125 0.125
Stainless steels up to 900 N/
mm
2
e.g. X5CrNi18 10
n
2000
1250
1000
800
630
500
500
400
400
Oil
f
0.032
0.05
0.063
0.08
0.10
0.10
0.125 0.125
0.16
1): Speed [n] in rpm
2): Feed [f] in mm/rev
3): Cooling: E = Emulsion; oil = cutting oil