Hellmerich introduces spindle speeders

Higher cutting speed for boring or milling operations

The newly developed Hellmerich spindle speeders HPC-SLS have been designed for boring and milling operations in machine tools. Whenever the machines’ rotation speed is not sufficient, the spindle will provide the required cutting speed. These tailor made driven tools are assembled from modular units and optimized for the individual application.


First customers can select one of three performance levels regarding torque and rotational speed. Thereafter the user can determine the required precision class of the tool chuck, its torque and its machine interface. The spindle then will be fine-tuned regarding to type and size of the spindle bearings, speed suitability by tuning the pressure angle and preload of the spindle bearings or the fine adjustment of the planetary gear if necessary.


Spindle speeders are usually used when the machine rotation speed and the resulting cutting speeds are no longer sufficient for an economical production in the machining process. The units are suitable for high-precision drilling and milling operations, but also for large-scale machine tools, which can for example be used for the machining of components for wind power plants.


Automatically exchangeable high-speed spindle

Thanks to a standard machine interfaces the high-speed spindle can be changed into the machine main spindle via the tool magazine. The use of high-strength lightweight aluminium materials reduces torques on tool changer systems and, despite its robust construction, enables automatic interchangeability even at the highest performance level. It can also be used as a pick-up head in large machine tools. The spindle speeders are equipped with an internal coolant supply directly through the tool spindle.


Heavy milling operations or trochodial milling: The Hellmerich spindles can be used for a variety of applications.

Thanks to a variety of performance classes based on verified customer requirements, these HELLMERICH units not only enable heavy milling operations, but also new processing methods such as trochodial milling. In general lower cutting forces, but increased rotational speed ranges are required for this special milling process.