BL3525O 35mm Brushless DC Motor 7.4V 3200RPM + PWM Driver

BL3525O 35mm Brushless DC Motor — 7.4V, 3200RPM, High Torque with Built-In Driver & PWM Speed Controller

Compact yet extraordinarily powerful, the BL3525O Brushless DC Motor delivers impressive torque in a slim 35mm form factor. Engineered with a neodymium iron boron (NdFeB) high-strength permanent magnet, this motor is purpose-built for applications requiring consistent high output — including micro percussion devices, robotics, DIY electronics, and more. It ships with its own integrated driver board, making it a true plug-and-play solution for hobbyists and engineers alike.

Made in Mainland China.

Key Features

• Rated Voltage: DC 7.4V (compatible voltage range: DC 5V–12V)
• Rated Speed: 3200 RPM — constant-speed design maintains stable RPM even as voltage varies
• High Torque Output: Rotation cannot be manually stopped — powerful enough for demanding applications
• Built-In Driver Board: No external driver needed; operates directly on a single DC power supply
• PWM Speed Control Support: Connect a PWM signal to reduce speed down to ~1000 RPM while maintaining strong torque
• Rotation Direction: Clockwise (CW)
• Waterproof Protection Feature for added durability
• CE Certified

Specifications

How to Use

Connect the red wire to the positive pole and the black wire to the negative pole of your DC power supply. Important: Never reverse the polarity — incorrect wiring may permanently damage the driver board.

To run at maximum speed, connect the PWM wire to the negative pole. To enable variable speed control, input a PWM signal and adjust the duty cycle to reduce RPM while retaining full torque output.

Ideal Applications

• Micro percussion / handheld massage devices
• DIY robotics and automation projects
• RC models and hobby electronics
• Small machinery and gear-driven mechanisms
• Engineering prototypes and maker projects

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Frequently Asked Questions

Q: What is the operating voltage range for the BL3525O brushless DC motor?

A: The BL3525O has a rated voltage of DC 7.4V, and it operates within a compatible voltage range of DC 5V to 12V. It is a constant-speed motor, meaning its RPM remains relatively stable across this range.

Q: Can I control the speed of this brushless motor?

A: Yes. The motor supports PWM (Pulse Width Modulation) signal input for speed control. By adjusting the duty cycle of the PWM signal, you can reduce the motor speed down to approximately 1000 RPM while still maintaining strong torque output.

Q: Does the BL3525O motor come with a driver board?

A: Yes, this motor includes its own integrated driver board. It can run directly from a single DC power supply without requiring an external motor driver, making it convenient for DIY and prototyping applications.

Q: What happens if I connect the motor wires in reverse?

A: Reversing the polarity (connecting red to negative and black to positive) is strictly prohibited and may permanently damage the driver board. Always connect the red wire to the positive pole and the black wire to the negative pole.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.