Pololu 3712/3713/3714/3715/3716/3717/3718/3719/3720/3721/3722/3723 Metal Gearmotor 6V CB with Extended Motor Shaft
Pololu 3712/3713/3714/3715/3716/3717/3718/3719/3720/3721/3722/3723 Metal Gearmotor 6V CB with Extended Motor Shaft
Pololu 3712/3713/3714/3715/3716/3717/3718/3719/3720/3721/3722/3723 Metal Gearmotor 6V CB with Extended Motor Shaft
The Pololu Metal Gearmotor 6V CB series is a precision-engineered DC motor with integrated metal gearbox and extended motor shaft, designed for robotics, automation, and mechanical drive applications requiring compact form factor with high torque output. Professional engineers and hobbyists use these gearmotors in mobile robots, conveyor systems, and automated machinery where reliable power transmission and extended shaft access are critical for mechanical coupling. This product solves the challenge of integrating motor and gearbox functions while providing direct shaft access for pulley, gear, or wheel attachment without additional mechanical adapters.
Product Overview
The Pololu 3712-3723 series represents a family of 6V metal gearmotors engineered with precision brass gears and hardened steel shafts, delivering consistent torque output across multiple gear ratio options. The extended motor shaft design eliminates the need for shaft couplings or adapters, allowing direct mechanical integration with wheels, pulleys, or gears. Operating at 6V DC, these motors draw minimal current while providing substantial mechanical advantage through the integrated gearbox, making them ideal for battery-powered applications where efficiency and compactness are essential design parameters.
Each model in the series features a sealed metal housing that protects internal gears from dust and debris, ensuring long operational life in field conditions. The extended shaft protrudes beyond the motor housing, providing 10-12mm of accessible shaft length for secure mechanical attachment. With no-load current draw of 50-100mA at 6V and stall current ratings up to 800mA, these motors are suitable for microcontroller-based control systems using standard H-bridge motor drivers or relay circuits. The metal construction provides superior heat dissipation compared to plastic-housed alternatives, enabling continuous operation without thermal shutdown.
Key Specifications
| Specification | Details |
| Product Type | 6V DC Metal Gearmotor with Extended Shaft |
| Brand | Pololu Robotics and Electronics |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Operating Voltage | 6V DC |
| No-Load Current | 50-100mA at 6V |
| Stall Current | Up to 800mA |
| Gear Ratio Options | Multiple ratios: 30:1, 50:1, 75:1, 100:1, 150:1, 200:1, 300:1 |
| Output Shaft Diameter | 3mm |
| Extended Shaft Length | 10-12mm beyond motor housing |
| Housing Material | Metal (brass gears, steel shaft) |
| Motor Speed Range | 100-300 RPM depending on gear ratio |
| Torque Output | 0.5-5 kg-cm depending on gear ratio |
Key Features
- Extended motor shaft design eliminates need for coupling adapters, reducing assembly complexity and mechanical play in drive systems
- Precision metal gearbox with brass gears and hardened steel shafts ensures minimal backlash and repeatable positioning for robotic applications
- Sealed metal housing protects internal components from environmental contamination, extending operational life in outdoor and industrial settings
- Multiple gear ratio options from 30:1 to 300:1 allow selection of optimal speed-torque characteristics for specific application requirements
- Low current draw at no-load operation extends battery life in portable robotics and wireless applications
- Compact form factor fits within space-constrained robot chassis and mechanical assemblies
Applications and Use Cases
- Mobile robotics platforms requiring direct wheel drive with extended shaft for wheel hub attachment without additional mechanical couplings
- Conveyor belt systems and material handling equipment where compact motor-gearbox integration reduces footprint and maintenance points
- Automated door locks and gate actuators requiring controlled rotational force with extended shaft for direct linkage to mechanical latch mechanisms
- Educational robotics projects and Arduino-based automation where simplified motor integration accelerates prototyping and reduces assembly time
- Robotic arm joints and pan-tilt mechanisms requiring precise speed reduction and torque multiplication with minimal backlash
- Winch and pulley systems where extended shaft allows direct pulley mounting for rope or cable drive applications
How to Use
To integrate the Pololu Metal Gearmotor into your project, first identify the required gear ratio based on your speed and torque calculations. Connect the motor leads to your power source through an appropriate motor driver circuit such as an L298N H-bridge or relay module, ensuring proper polarity for forward and reverse rotation control. The extended motor shaft accepts standard 3mm bore components including wheels, pulleys, gears, and couplers. Secure your mechanical attachment using the shaft's flat edge or by drilling a small set-screw hole through the component into the shaft, ensuring the load is distributed evenly to prevent shaft bending.
For microcontroller integration, connect the motor driver output pins to digital GPIO pins on your Arduino, Raspberry Pi, or similar platform. Implement PWM control for speed variation and digital logic for direction control. Ensure your power supply can deliver the stall current rating of 800mA without voltage sag, as this will cause erratic motor behavior and microcontroller reset. Mount the motor securely to your chassis using the mounting holes on the motor housing, and verify smooth rotation under no-load conditions before attaching your mechanical load. For continuous operation applications, monitor motor temperature and implement thermal management if sustained stall conditions are anticipated.
Frequently Asked Questions
What is the difference between the various model numbers in the 3712-3723 series?
The Pololu 3712-3723 series contains different gear ratio variants and motor specifications. Models 3712-3717 feature different gear ratios optimized for varying speed-torque tradeoffs, while models 3718-3723 represent alternative configurations. The extended motor shaft is standard across all variants. Consult the product datasheet to match the specific gear ratio to your application's torque and RPM requirements.
Can I operate this motor at voltages other than 6V?
While the motor is rated for 6V operation, brief operation at 5V will reduce speed and torque proportionally without damage. Operating above 6V will increase current draw and reduce motor lifespan due to excessive heat generation in the windings. For applications requiring different voltage levels, consider using PWM speed control at 6V rather than changing the supply voltage, which maintains optimal motor characteristics.
What type of motor driver should I use with this gearmotor?
The Pololu Metal Gearmotor works with any motor driver capable of handling 800mA stall current at 6V. Common options include the L298N dual H-bridge module, TB6612FNG breakout board, or relay-based circuits. For Arduino projects, use PWM-capable digital pins to control motor speed. Ensure your motor driver has adequate heat dissipation and current rating for continuous operation without thermal shutdown.
How do I attach a wheel or pulley to the extended motor shaft?
The 3mm diameter extended shaft accepts standard components with 3mm bore holes. Align the component with the shaft's flat edge for positive drive engagement, then secure using a set screw tightened perpendicular to the shaft. Alternatively, drill a small hole through the component and shaft, then insert a small pin or cotter pin to prevent rotation. Ensure the attachment is tight to prevent slippage under load, as this will cause overheating and premature motor failure.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Tech Depot
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Pololu 3712/3713/3714/3715/3716/3717/3718/3719/3720/3721/3722/3723 Metal Gearmotor 6V CB with Extended Motor Shaft Online in India
Purchase the Pololu 3712/3713/3714/3715/3716/3717/3718/3719/3720/3721/3722/3723 Metal Gearmotor 6V CB with Extended Motor Shaft online at The Tech Depot, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Pololu 3712/3713/3714/3715/3716/3717/3718/3719/3720/3721/3722/3723 Metal Gearmotor 6V CB with Extended Motor Shaft with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.