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High-Speed Applications

High-speed spindles in machine tools

High-speed spindles in machine tools require a high rotating field frequency and allow only low excess temperatures due to the small rotor volume. Our frequency converters are able to generate these frequencies and guarantee a low heating of the motors by means of special control technologies.

Whether for machine tools in the size of a single-family house or for small CAD/CAM milling machines with limited space, SIEB & MEYER has the right solution.

The converter in question is suitable for sensorless as well as for sensor-controlled operation of synchronous and asynchronous motors up to a speed of 120,000 min-1. The parameterization can be easily realized via the software drivemaster2.

  • High-speed spindles are the key components of a machine tool. Only when operated in an optimal way, the desired machining accuracy, productivity and service life of the whole machine is guaranteed. 


  • Grinding applications have a special position in the field of machine tools. Internal grinding applications, for example, require sensorless operation of asynchronous and synchronous spindles up to 250,000 rpm. 


  • For dressing applications, it is essential to keep the spindle temperature low: a temperature increase in the spindle causes a longitudinal growth and therefore a shift of the tool position. 


  • Small CAD/CAM routing machines are used, for example, in dental laboratories for jewelry making or engraving works as well as for producing advertising displays. 


  • High-speed dicing spindles are the key components in machines for microchip separation – the so-called wafer dicing. 


  • In the field of turbomachines, the system's efficiency can be continuously improved by increasing the system speed or omitting the gear. 


  • Due to their design, a large number of technologies in the field of waste energy usage or mechanical energy storage require high-speed motors and generators


  • Rotary atomization processes, e.g. applied for the production of milk powder or flue gas treatment, require high circumferential speeds. Therefore, it is necessary to use matching high-speed motors instead of low-speed standard motors.


  • Refrigeration units with turbo or centrifugal compressors with higher power ranges operate with high speeds. Frequency converters by SIEB & MEYER easily provide the required speeds and their control method ensures an exceptionally low rotor heating.


  • Polygon scanners are based on special optics and operate, for example, sorting machines. Up to now, manufacturers had to install encoders to run these scanners with a high speed stability.

Products precisely tailored for your application

With our experience from customized drive systems that are meanwhile produced in large series and as well as our standard devices, we are supporting you from the project planning phase to the series production.