The choice of the right spindle is decisive for success or failure in the machining process. That's why spindles from Step-Tec differ in their design in the following three main applications:

Aerospace
In this application we have the toughest requirements for a motor spindle. For example, in contrast to mold construction, here it is important to achieve the greatest possible chip volume in the shortest possible time when milling aluminium structural parts. This is often achieved with long tools, high speeds, high spindle performance, and therefore high vibrations. As a result, a spindle with a very high dynamic stiffness is required. FEM (finite elements) calculations are therefore mandatory.
The speed range for the HSK-A100 interface is a maximum of 18,000 rpm and ends with the HSK-F63 at a maximum of 40,000 rpm. For power, the range is between 40 kW with the HSK-F63- and 100 kW with the HSK-A100 interface.