Think outside the gearbox with solid rotor technology

The Switch direct-drive, high-speed electrical machines allow you to eliminate the mechanical gearbox, allowing you to reach higher speeds and unmatched energy efficiency.

The Switch solid-rotor technology extends the speed capabilities of standard induction electric motors, answering the demand for high-speed motors when running below multi-megawatt powers.

  • 0 rotor failures in over 10 years of industrial operation

  • Power range from 300 kW – 2 MW

  • Speeds up to 20,000 rpm

The Switch high-speed products are ideal for applications, such as blowers, compressors, pumps, vacuum systems and other applications in the speed range of 6,000 – 20,000 rpm. These motors have also been used in various test-bench configurations. We are also willing to discuss projects involving multi-megawatt hermetically sealed and hydrogen compressors.

High-speed induction machines

The Switch standalone product range comes in two frame sizes – 315 and 400. The high-speed machines are designed to be coupled to driving or driven machinery through a separate coupling, for example a steel pack coupling.

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High-speed machine

Motor and drive packages

The Switch standalone high-speed machine can be paired with a variable frequency drive (VFD) in a power range from 300 kW up to megawatt class and speeds of up to 20,000 rpm.

high speed machine and drives


The VFD allows operating frequencies higher than the 50/60 Hz grid frequency. For example, a 2-pole motor running at 10,000 rpm is supplied with approximately 167 Hz. The full-speed control enables full freedom to optimize the process

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semi integrated high speed machine

Semi-integrated solutions

Semi-integrated machines include the compressor, turbine or pump impeller mounted directly on the shaft of the electric machine. The bearing system and rotor dynamics can be calculated and tailored to the application.

Semi-integrated solutions are available based on our successful long-term joint development projects with world leaders. Ask us more!

Fully integrated solutions

For ultimate system simplicity, we can offer The Switch integrated machines. Active parts of the solid-rotor machine can be completely tailored to suit different applications. We are happy to discuss the delivery scope case-by-case.

Fully integrated solutions are available based on our successful long-term joint development projects with world leaders. Ask us more!