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3.7V 40000RPM Micro Brush Motor 10x25mm High Speed Coreless DC Motor

3.7V 40000RPM Micro Brush Motor 10x25mm High Speed Coreless DC Motor

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ComponentSpecification
Motor TypeCoreless (Hollow Cup) Brush
Operating Voltage3.0V to 4.2V DC
Rated Voltage3.7V DC
No-Load Speed40,000 RPM (at 3.7V)
No-Load Current100mA to 150mA
Shaft Diameter1.0mm to 1.2mm
Dimensions10mm (D) x 25mm (L)
WeightApprox. 8g
Price
₹ 50.00 ₹ 50.00
(Tax included)

Product Description The 1025 High-Speed Coreless Motor is a powerhouse in a miniature frame, specifically designed for high-performance applications like micro-drones, quadcopters, and high-velocity robotics. Unlike traditional motors, its coreless design eliminates the iron core from the rotor, allowing for extremely low inertia, lightning-fast acceleration, and ultra-high RPMs. Operating at a nominal 3.7V, it is perfectly matched for single-cell LiPo battery setups.

Key Features

  • Exceptional power-to-weight ratio for flight applications.

  • Ultra-high rotational speed reaching up to 40,000 RPM.

  • Coreless technology ensures low vibration and rapid response.

  • Lightweight cylindrical design fits easily into micro drone frames.

  • Pre-soldered flexible leads for quick installation.

Technical Details

  • Input Voltage Range: 3.0V – 4.2V DC

  • Rated Voltage: 3.7V DC (LiPo Compatible)

  • Max Speed: 40,000 RPM +/- 10%

  • Stall Current: ~1.5A to 2.0A (depending on load)

  • Shaft Length: ~5mm to 7mm

  • Operating Temperature: -10 to +60 degrees Celsius

  • Efficiency: High-efficiency hollow cup winding

  • Wire Color: Red/Blue or Black/White (depending on rotation)

Prototyping and Engineering Tips from Robogears

  • Rotation Direction: These motors are often directional. Check the wire colors; typically Red/Blue is Clockwise (CW) and Black/White is Counter-Clockwise (CCW). Reversing polarity on a coreless motor can reduce its lifespan.

  • Cooling: At 40,000 RPM, the motor generates heat quickly. Ensure your design allows for adequate airflow, especially in enclosed drone arms or robot chassis.

  • Propeller Selection: Ensure your propeller is well-balanced. An unbalanced load at high RPM will cause significant vibration, leading to bearing wear and reduced flight stability.

  • Switching: Use a high-frequency MOSFET (like an IRLML series) for PWM control. Standard hobby transistors may not handle the rapid switching and stall currents effectively.

Package Includes

  • 1 x 1025 Micro High-Speed Coreless Motor (3.7V)

Disclaimer Product images are shown for illustrative purposes only and may vary from the actual product due to manufacturing changes, lighting conditions during photography, or batch updates. While we strive for accuracy, technical specifications are subject to change by the manufacturer without prior notice. Please ensure your circuit design accounts for current surges and thermal management. Extreme care should be taken when operating at high RPMs to avoid injury or damage.