Frequency Converters for Milling, Drilling and Grinding Spindles

The Challenges

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. The used high-speed motors require a suitable frequency converter due to the necessary high rotating field frequency and the low rotor volume. The frequency converters by SIEB & MEYER provide the necessary rotating field frequency and guarantee a low motor heating thanks to the special control technology. The motor heating has a significant impact on the machining accuracy and the service life of high-speed spindles, especially when it comes to the service life of bearings.


Frequency Converter SD2S

The Specialist for High-speed Applications

Powerful, flexible, compact – these words describe the SIEB & MEYER drive SD2S regarding high-speed applications.

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Frequency Converter SD2M

The Powerful One

SIEB & MEYER has developed the frequency converter SD2M using the three-level technology which ensures exceptionally low rotor losses. SD2M convinces by a maximum output, little need for space, reduced system costs and high efficiency.

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Drive System SD2

The Team Player

The digital drive system SD2 can be connected to your controller via the real-time bus SERVOLINK 4 using fiber optic cables. This design allows a direct and fast access to all relevant drive parameters.

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Frequency Converter SD2B plus

The Space Marvel

The special compact design of SD2B plus allows easy and flexible integration of the device. The IP20 housing convinces with its reduced construction height of only 25 mm.

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Frequency Converter SD4S

Ready for the future

Complex tasks are quickly processed with the frequency converter SD4S. The devices are designed for stationary use in control cabinets of machine tools, turbo compressors and turbo blowers.

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Frequency Converter SD2T

The Flexible One

Whether used as a stand-alone device or as expansion of an existing machine tool: The frequency converter SD2T by SIEB & MEYER is the optimal basis for driving synchronous and asynchronous spindles or motors with speeds up to 480,000 rpm.

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Customized Solutions

With our highly qualified development team and in-house production we reach maximum innovation and flexibility.

We are committed to meet our customers' requirements in regard to the quality of our products. The customer's benefit is our top priority. Satisfied customers are the confirmation of our good job.

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Intensive consulting during concept and specification development

  • 50 years of expertise
  • cooperation partners for different sectors (from automotive to cutting industry)

The complete expert knowledge in-house

  • power and control electronics
  • field bus systems
  • FPGA and microcontroller programming
  • Windows® or Linux™ programming
  • circuit simulation and circuit layout
  • thermal simulation
  • mechanical 3D construction
  • EMC
  • assistance for certification projects (UL, NRTL, CSA, TÜV)

Flexibility of an independent, middle-size company

  • short decision-making paths
  • speedy implementation
  • made in Germany

Qualified support for product launch

  • initial operation of the complete system

Extensive testing

  • EMC tests
  • power tests
  • climate tests

Case Studies

Experienced in high-volume production of customized drive systems, SIEB & MEYER is the right partner for your projects. From project planning to serial production we are at your disposal.

High-speed Frequency Converter for Low-voltage Manufacturing Spindles in Machine Tools

On behalf of a premium manufacturer of motor spindles SIEB & MEYER has developed a compact frequency converter for the sensorless operation of manufacturing spindles with asynchronous and synchronous motors in the low-voltage range.

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