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  5. Generators and transmission motors
  6. Inner Rotor Coreless Generator SKY-MR Series

Inner Rotor Coreless Generator SKY-MR Series

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SKY-MR Series

last updated:Jun 26, 2026

スカイ電子
スカイ電子
  • Official site

Achieving high magnetic fields through the use of rare earth magnets!

The SKY-MR series generates a high magnetic field by using rare earth magnets and adopting a multipole structure, allowing for high output voltage even at low rotation speeds (below 300 rpm), making it a highly efficient generator with high output. By employing a rotating field excitation type where the magnetic part rotates and a coreless structure that does not use an iron core, it has the advantage of having no electrical contact points, eliminating cogging torque and iron losses. As a result, it is a highly efficient and reliable generator that starts smoothly.

    Generators and transmission motorsWind turbineGenerator
hr125image.jpg

Inner Rotor Coreless Generator SKY-MR Series

hr125image.jpg
hr125image.jpg
  • Related Link - https://sky-denshi.co.jp/%e3%82%b3%e3%82%a2%e3%83%…

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basic information

Models ranging from a fixed output of 35W to 500W are available. 【Features】 ■ High-efficiency power generation system with high output ■ Uses rare earth magnets ■ Coreless structure ■ No cogging torque or iron loss occurs *For more details, please refer to the catalog or website.

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Applications/Examples of results

Ideal for small wind power generation and small hydropower generation. Also adopted in our company's developed bicycle-type human-powered generator, the EnerTrek series.

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Model number overview
SKY-MR125 Rated power generation of 35W
SKY-MR160 Rated output power 100W
SKY-MR200 Rated power generation of 200W
SKY-MR250 Rated power generation of 300W
SKY-MR300 Rated power generation of 500W

Company information

スカイ電子

スカイ電子

Industrial Electrical Equipment

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Sky Electronics is a specialized manufacturer of precision coils and prototype coils, and in order to contribute to environmental issues, we develop and sell outer rotor generators such as micro generators, small wind turbines, bicycle generators, and small generators for disaster prevention.

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