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  5. Generators and transmission motors
  6. Outer Rotor Coreless Generator SKY-HR Series

Outer Rotor Coreless Generator SKY-HR Series

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SKY-HR Series

last updated:Jun 26, 2026

スカイ電子
スカイ電子
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Achieving high magnetic fields through the use of rare earth magnets!

The SKY-HR series achieves a high magnetic field through the use of rare earth magnets and a multipole structure, generating a high output voltage even at low rotation speeds (below 300 rpm), making it a highly efficient generator with high output. By adopting a rotating field excitation type where the magnet part rotates and a coreless structure that does not use an iron core, it has the advantage of 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

Outer Rotor Coreless Generator SKY-HR 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.

Price range

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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 "Enetore" series.

Line up(5)

Model number overview
SKY-HR125 Rated rotation speed 600 rpm, rated power generation 35 W, allowable current 0.6 A, rated voltage 105 V, weight 1.6 kg.
SKY-HR160 Rated rotation speed 500 rpm, rated power generation 100 W, allowable current 1.6 A, rated voltage 110 V, weight 3.5 kg.
SKY-HR200 Rated rotation speed 350 rpm, rated power generation 200 W, allowable current 3.6 A, rated voltage 88 V, weight 6.5 kg.
SKY-HR250 Rated rotation speed 300 rpm, rated power generation 300 W, allowable current 6.4 A, rated voltage 100 V, weight 10 kg.
SKY-HR300 Rated rotational speed 300 rpm, rated power generation 500 W, allowable current 8.1 A, rated voltage 180 V, weight 15 kg.

catalog(4)

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Sky Electronics Co., Ltd. Business Introduction

Sky Electronics Co., Ltd. Business Introduction

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Generator "SKY-HR250"

Generator "SKY-HR250"

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Generator "SKY-HR300"

Generator "SKY-HR300"

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Small Wind Turbine SKY-HR350W

Small Wind Turbine SKY-HR350W

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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.

Product/Service List (12)

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