The struggle for fractions of a millimeter is different in every product range: For 30 years, Heckert, for example, has been relying on a special form of work spindle: I refer to the NC quill, with which deeper surfaces and bores can be machined with high precision using short standard tools without vibration.

Heckert demonstrates how well this can be achieved at the Chemnitz measuring center, which fulfils the strict specifications of German standard VDI 2627 and whose services can also be used by Starrag customers. The four ZEISS measuring machines and programming stations allow you to measure ghost layers for checking product lines – with an accuracy of up to 0.7 micrometers.

The Starrag headquarters in Rorschacherberg has been developing and manufacturing motor and gear spindles in-house since 1920. This traditional precision work is also impressive: According to current measurement results, the axial shaft displacement is less than 394 microinch (10 micrometers) over the entire speed range.

But where are these remarkable achievements currently in demand? In the Far East. One hundred Starrag machine tools have been received by wind turbine manufacturers in China since 2006. The two most important decision criterias being productivity and precision.

I hope you enjoy reading the Star 01–2023 issue and our “lived precision” in all areas.

Best wishes,
Alexander Attenberger