ADVICE ON DRILLING WORKPIECES
The following points should be observed at all times:
always use sharp tools
cool the drill bit with a suitable liquid
use a special drill bit for drilling into stainless steel
for very hard materials use a higher pressure at lower speed setting for soft materials apply light pressure at a higher speed
Attention: too high a pressure overloads the motor and reduces the drilling speed small drills require a high drill speed
larger drills require a lower drill speed
The following table gives further helpful advice:
the correct speed is different for each material
the cutting speed is dependent on the diameter of the drill and the rotation speed the table gives the approximate rotation speed
please note that an average speed has been calculated for the listed materials and the rotation speeds have been rounded
in some cases the calculated cutting speeds (CS) cannot be selected in practice - use the nearest available value
Material | CS |
Wood, soft | 300 rpm |
Wood, medium | 180 rpm |
Aluminium "hard“ | 120 rpm |
Wood “hard”, copper | 60 rpm |
Steel or sheet metal | 35 rpm |
Aluminium “soft” | 30 rpm |
Structural steel | 25 rpm |
Alloy steel | 10 rpm |
Stainless steel (VA steel) | 10 rpm |
Drill size |
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2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 13 |
max. | max. | max. | max. | max. | max. | max. | max. | max. | max. |
max. | max. | max. | max. | max. | max. | max. | max. | max. | max. |
max. | max. | max. | max. | max. | max. | max. | max. | 3800 | 2950 |
max. | max. | max. | 3800 | 3200 | 2700 | 2400 | 2100 | 1900 | 1500 |
max. | 3700 | 2800 | 2250 | 1850 | 1600 | 1400 | 1250 | 1100 | 850 |
max. | 3200 | 2400 | 1900 | 1600 | 1350 | 1200 | 1050 | 950 | 700 |
4000 | 2650 | 2000 | 1600 | 1300 | 1150 | 1000 | 900 | 800 | 600 |
1600 | 1100 | 800 | 650 | 500 | 450 | 400 | 350 | 300 | 250 |
1250 | 850 | 650 | 500 | 400 | 350 | 300 | 280 | 250 | 200 |
DECLARATION OF CONFORMITY
We, Kompernaß Handelsgesellschaft mbH, Burgstr. 21,
Machinery Directive (98/37 EC), Low Voltage Directive (73/23 EEC, 93/68 EEC), Electromagnetic Compatibility (89/336 EEC, 93/68 EEC) in accordance with the applicable standards, and confirm this with the CE mark.
Type/machine description: PARKSIDE BENCH DRILL PTBM
Bochum, 31.08.02
Hans Kompernaß
- Managing Director -
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