ATTENTION: This is a recommendation only. There are many other factors that influence the optimal speed and cutting speed. E.g.: the condition of the drill or the thickness of the material.
The following values and formulas are required for a manual calculation of the speed.
To illustrate this, we have also included a calculation example.
And last but not least, you will find two tables that you can use to easily determine the optimum speed and cutting speed.
Formula for calculating the speed
Calculation of the cutting speed
Sie wollen mit einem 10,0 mm Bohrer in legierten Stahl (Rm < 1000 N/mm²) bohren – dann ergeben sich folgende Werte: