FK-130SH High Speed Mini DC Carbon Brush Motor

FK-130SH High Speed Micro DC Motor 3V-3.7V for Robotics & Science Projects BD

The FK-130SH Micro DC Motor is a compact, high-efficiency power solution engineered with durable carbon brushes and an integrated cooling hole for continuous, reliable operation. Designed for low-voltage applications, this motor runs exceptionally well between 3.0V and 3.7V DC, reaching impressive speeds up to 23,400 RPM. Unlike standard metal-brush motors that wear out quickly under load, the carbon brush construction of the FK-130SH provides enhanced thermal resistance and extended lifespan. It is ideal for students, hobbyists, and makers across Bangladesh working on custom electronics, miniature robotics, DIY slot cars, and science fair innovations. Available locally through Biggan Project, this motor offers dependable energy conversion and smooth torque delivery for modern micro-engineering setups.

Product Specifications

Features

• High-grade carbon brush design ensures long working life and stable electrical conductivity under continuous operation.
• Built-in body cooling vents enhance airflow to dissipate internal heat effectively during extended runs.
• Optimized for low-voltage power supplies such as single-cell Li-ion batteries (3.7V) or 2x AA battery packs (3.0V).
• Compact 28mm x 20mm form factor fits easily into space-constrained DIY hardware models and miniature vehicles.
• Standardized 2.0mm output shaft supports wide compatibility with hobby gears, propellers, and pulleys available in BD.
• Lightweight 25g build minimizes structural load on miniature robotics and wireless models.

Applications / Use Cases

• DIY science project builds for schools, colleges, and competitions in Bangladesh.
• High-speed RC toy cars, mini 4WD models, and slot car propulsion systems.
• Autonomous micro-robots, obstacle-avoiding cars, and line-following robot chassis.
• Small custom air blowers, mini fans, and lightweight water pump prototypes.
• Hobbyist model boats, hovercrafts, and small educational physics setups.

User Guide / How to Use

• Identify the positive and negative terminal tabs located on the rear end of the motor casing.
• Solder flexible jumper wires to the terminals using a standard soldering iron, ensuring short wire leads to prevent short circuits.
• Connect the motor terminals to a regulated DC power source, such as a 3.7V 18650 Li-ion battery or a 3V-5V motor driver circuit.
• Press-fit a compatible 2.0mm inner-diameter gear, pulley, or propeller firmly onto the output shaft without applying excessive force to the back plate.
• Mount the motor housing securely using a 20mm motor bracket or clamp to prevent vibration during high-RPM operation.

Frequently Asked Questions (FAQs)

• Q: Can I run this motor using a 5V or 6V power source?
  A: While the motor can run at 5V or 6V, it generates significant heat rapidly at higher voltages. Running it continuously between 3.0V and 3.7V is strongly recommended for optimal lifespan.
• Q: How do I change the rotational direction of the shaft?
  A: Simply reverse the positive and negative wire connections at the terminal leads to reverse the motor spin direction.
• Q: Is this motor suitable for drone flight props?
  A: This is a brushed motor intended for ground vehicles, fans, and light mechanical builds rather than high-thrust drone flight applications.
• Q: Can I control the speed of this motor using microcontrollers like Arduino?
  A: Yes, you can control the speed using PWM signals routed through a motor driver module such as the L298N, L293D, or an N-channel MOSFET circuit.

Challenges and Considerations

• Operating the motor continuously at voltages above 3.7V leads to elevated current draw and overheating.
• Direct connection to microcontroller GPIO pins will damage the controller; always use a motor driver, transistor, or relay.
• Ensure the cooling vents on the motor casing remain unblocked by tape or glue during installation.

Compatibility

• Power Sources: 3.7V 18650 Li-ion batteries, 3.2V LiFePO4 cells, 2x AA/AAA battery holders (3V), and 3V-5V DC power adapters.
• Motor Drivers: L293D, L298N, TB6612FNG, mini MX1508, and single MOSFET switches.
• Mechanical Attachments: Standard plastic gears, wheels, and propellers with a 2.0mm shaft hole diameter.

Future Enhancement Options

• Adding an optical or Hall-effect encoder wheel to the shaft for precise RPM monitoring and closed-loop control.
• Attaching an external aluminum heat sink over the casing to prolong continuous runtime at maximum speed.
• Pairing with a reduction gearbox to trade high RPM for elevated driving torque in heavy robot platforms.

Benefits

• Provides reliable high-speed motion for small-scale engineering and robotics applications without heavy power demands.
• Carbon brushes deliver higher durability and reduced spark wear compared to entry-level toy motors.
• Local availability via Biggan Project makes it convenient to source components quickly for projects in Bangladesh.

Conclusion

The FK-130SH Micro DC Motor offers an excellent combination of high RPM, efficient cooling, and extended durability through its carbon brush construction. It serves as an essential component for hobbyists, students, and DIY enthusiasts aiming to build fast, compact, and efficient electromechanical systems in BD.

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