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Home - Blog - DIY and Education Boosted by OSEPP R140 Micro DC Motor

DIY and Education Boosted by OSEPP R140 Micro DC Motor

June 12, 2026

Have you ever dreamed of building a working model or breathing life into your science experiments? The satisfaction of assembling intricate mechanical components and seeing them spring into motion is unparalleled. At the heart of such creations often lies an unassuming yet critical component: the micro DC motor. The OSEPP R140, a compact yet powerful micro motor, stands as an ideal partner for turning creative visions into reality.

Small in Size, Mighty in Performance

The OSEPP R140, as its name suggests, is a compact DC motor measuring approximately 25mm in diameter and 21mm in height. Despite its small, rounded frame, it delivers impressive power. With a rated voltage range of 1.5V to 3V, it achieves a no-load speed of up to 13,000 RPM (±10%) at its nominal 3V voltage—capable of rapid, high-speed operation. Its rated speed of 5,000–10,000 RPM ensures stable and consistent performance in applications requiring sustained power.

Why Choose the OSEPP R140?
  • Versatile Applications: Designed for broad usability, this motor suits DIY enthusiasts, model builders, educators, and science experimenters alike. Whether constructing a simple automated vehicle or a complex scientific demonstration, the R140 rises to the challenge.
  • Easy Integration and Control: As a brushed DC motor, the R140 is straightforward to operate, typically requiring only a direct connection to a DC power source. Adjusting the input voltage allows for precise speed control, while its 2mm shaft diameter facilitates compatibility with gears, pulleys, and other transmission components.
  • Reliable Performance: OSEPP has built a reputation for durable and stable electronic components. The R140 is engineered for efficiency and dependable power output, making it a trustworthy choice for practical applications.
Technical Specifications
  • Model: R140
  • Type: Brushed DC motor
  • Rated Voltage: 1.5V–3V
  • Nominal Voltage: 3V
  • No-Load Speed: 13,000 RPM (±10%)
  • No-Load Current: 170mA
  • Rated Speed: 5,000–10,000 RPM
  • Shaft Diameter: 2.0mm
  • Shaft Type: Round
Dimensions and Weight
  • Body Size: 25 × 21mm
  • Weight: 19g
  • Shaft Length: 38mm
Expanding Possibilities

While the R140’s nominal voltage is 3V, its 1.5V–3V range offers flexibility. Lower voltages reduce speed and current consumption, ideal for battery longevity, while 3V unlocks peak performance for high-power needs. This adaptability makes it suitable for small fans, toy vehicles, robotic arms, pumps, and precision electronic devices. Its lightweight design and low power consumption further enhance its appeal for battery-operated projects.

Conclusion

The OSEPP R140 micro DC motor combines compact dimensions, robust performance, and broad applicability, making it an indispensable tool for DIY endeavors and scientific exploration. Whether you’re a novice or an experienced maker, it empowers you to transform ideas into tangible innovations.