B5665 Brushless Motor 12–24V PWM CW/CCW FG Signal Built-In Driver
B5665 Brushless Motor 12–24V PWM CW/CCW FG Signal Built-In Driver
B5665 Inner Rotor Brushless Motor with Built-In Driver – 12–24V PWM Speed Control
The B5665 Brushless Motor is a precision-engineered inner rotor motor featuring a fully integrated driver board, making it a versatile and compact solution for a wide range of DC-powered automation, robotics, and DIY projects. Operating across a broad 8V–24V voltage range, it delivers smooth, quiet performance and precise electronic speed control right out of the box — no external driver required.
Made in Mainland China.
Key Features
- Built-In Driver Board: Fully integrated driver eliminates the need for a separate motor controller, simplifying your wiring and design.
- Inner Rotor Design: Rare earth medium-strong magnetic long rotor for high torque efficiency and responsive speed transitions.
- PWM Speed Regulation: Precise pulse-width modulation speed control lets you dial in the exact RPM you need.
- Bidirectional Rotation: Supports both clockwise (CW) and counter-clockwise (CCW) rotation switching for maximum application flexibility.
- FG Signal Feedback: Frequency generator (FG) signal output allows real-time speed monitoring and closed-loop control integration.
- Emergency Stop Function: Built-in emergency stop capability for added safety in critical applications.
- Double Ball Bearings: Front and rear imported ball bearings ensure low-noise, long-lasting, stable operation.
- Pure Copper Wire Coil: 0.8mm diameter pure copper winding for superior conductivity and durability.
- Wide Voltage Range: Compatible with 8V–24V DC regulated power supplies.
Specifications
| Model | B5665 |
| Structure | Inner rotor brushless motor, rare earth medium-strong magnetic long rotor |
| Driver | Built-in integrated driver board |
| Wire Coil | 0.8mm diameter pure copper |
| Bearings | Front & rear double imported ball bearings |
| Net Weight | 560g |
| Nominal Voltage | 24V DC |
| Working Voltage Range | 8V – 24V |
| Control Functions | PWM speed regulation, CW/CCW switching, emergency stop, FG speed signal feedback |
No-Load Performance Data
| Voltage | Current | Speed (RPM) |
|---|---|---|
| 8V | 0.2A | 1,550 RPM |
| 12V | 0.25A | 2,300 RPM |
| 24V | 0.32A | 4,650 RPM |
⚠️ Important Usage Warnings
- Do NOT reverse polarity. Reversing the positive and negative power supply connections will permanently damage the motor.
- Use a regulated DC power supply. A simple transformer rectifier is not suitable — a stable regulated DC supply is required.
- Follow the wiring diagram. Strictly adhere to the provided diagram markings when connecting wires.
Condition Note
There may be slight surface scratches or minor cosmetic marks on the motor casing. All units are fully function-tested and confirmed to be in perfect working order before shipment.
What's in the Box?
- 1× B5665 Brushless Motor (with built-in driver)
Notes
- Due to lighting conditions and monitor calibration, actual product color may vary slightly from images.
- Please allow 1mm–1cm tolerance due to manual measurement.
For more information on electrical motor safety standards and best practices, visit the OSHA Electrical Safety resource.
Frequently Asked Questions
Q: Does the B5665 brushless motor require a separate motor driver or controller?
A: No. The B5665 features a fully built-in integrated driver board, so no external driver or controller is needed. You can connect it directly to a regulated DC power supply (8V–24V) and control speed via a PWM signal.
Q: What type of power supply is compatible with the B5665 brushless motor?
A: The B5665 requires a regulated DC power supply in the 8V–24V range. A simple transformer rectifier is not recommended, as unregulated power can cause inconsistent performance or damage the built-in driver board.
Q: Can the B5665 motor run in both clockwise and counter-clockwise directions?
A: Yes. The motor supports both CW (clockwise) and CCW (counter-clockwise) rotation via the built-in control functions, making it ideal for applications that require bidirectional operation.
Q: What is the FG signal feedback used for on this motor?
A: The FG (Frequency Generator) signal feedback outputs a pulse signal proportional to the motor's rotational speed. This allows you to monitor real-time RPM and integrate the motor into closed-loop speed control systems for greater precision.
Q: Are there any cosmetic imperfections on the motor?
A: Some units may have minor surface scratches or small cosmetic marks from handling or storage. However, every motor is individually tested to confirm all functions — including PWM control, CW/CCW switching, FG feedback, and emergency stop — are fully operational before shipping.