Pololu 4793 / 4792 Micro Metal Gearmotor MP 6V - 380:1
Pololu 4793 / 4792 Micro Metal Gearmotor MP 6V - 380:1
Pololu 4793 / 4792 Micro Metal Gearmotor MP 6V - 380:1
The Pololu 4793 / 4792 Micro Metal Gearmotor MP 6V with 380:1 gear ratio is a compact, high-torque DC motor designed for robotics, automation, and precision motion control applications. Professional engineers and hobbyists rely on this motor for projects requiring low-speed, high-torque output with minimal space constraints. This gearmotor solves the critical challenge of delivering substantial mechanical force from a miniaturized form factor while maintaining excellent efficiency and reliability in demanding embedded systems.
Product Overview
The Pololu Micro Metal Gearmotor MP series represents the pinnacle of miniaturized motor technology, combining a precision brushed DC motor with a high-ratio planetary gearbox. The 380:1 gear ratio provides exceptional torque multiplication, converting the motor's inherent high-speed output into controlled, powerful low-speed rotation ideal for robotic locomotion, conveyor systems, and automated machinery. The gearbox utilizes hardened steel gears and precision-machined components to ensure minimal backlash and maximum efficiency across extended operational cycles.
This specific model operates at 6V nominal voltage, delivering approximately 0.5 A stall current and producing significant holding torque suitable for load-bearing applications. The motor features a robust aluminum housing with integrated mounting flanges, allowing seamless integration into mechanical assemblies. Pololu's engineering excellence ensures consistent performance across temperature ranges, making this gearmotor suitable for both indoor laboratory environments and field deployment scenarios requiring environmental resilience.
Key Specifications
| Specification | Details |
| Product Type | Micro Metal Gearmotor with Planetary Gearbox |
| Brand | Pololu |
| Model Number | 4793 / 4792 |
| Nominal Voltage | 6V DC |
| Gear Ratio | 380:1 |
| No-Load Speed | Approximately 50 RPM at 6V |
| Stall Current | Approximately 0.5 A |
| Output Shaft Diameter | 2 mm |
| Motor Dimensions | 10 x 12 x 27 mm |
| Weight | Approximately 10 grams |
| Gearbox Type | Precision Planetary |
| 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 |
Key Features
- High Gear Ratio 380:1 provides exceptional torque multiplication, enabling precise control of heavy loads with minimal power input and reduced motor heating
- Planetary Gearbox Design minimizes backlash and cogging effects, delivering smooth, predictable motion essential for robotic arm positioning and precision automation
- Compact Micro Form Factor measures just 10 x 12 x 27 mm, allowing integration into space-constrained robotics platforms, drone mechanisms, and miniature automation systems
- Brushed DC Motor Technology ensures simple voltage control, direct PWM speed regulation, and straightforward integration with microcontroller-based systems without complex driver circuits
- Robust Aluminum Housing with integrated mounting flanges provides mechanical durability and simplified mechanical integration into 3D-printed and machined assemblies
- Low Operating Voltage at 6V DC enables safe operation with standard battery packs and eliminates high-voltage isolation requirements in portable applications
Applications and Use Cases
- Robotic Mobile Platforms: Drive wheel assemblies in small wheeled robots where the 380:1 ratio converts high motor speed into controlled, powerful wheel rotation for precise navigation and obstacle climbing
- Robotic Manipulators: Joint actuators in multi-axis robot arms where compact size and high torque enable smooth, controlled movement of lightweight to medium-weight end effectors
- Automated Conveyor Systems: Drive mechanisms in miniature conveyor belts and material handling systems requiring consistent, controllable linear motion at reduced speeds
- Precision Positioning Equipment: Actuators in laboratory automation, microscopy stages, and measurement systems where low-speed, high-torque output enables fine positional adjustments
- Educational Robotics Projects: Motor selection for university-level robotics competitions and STEM learning platforms requiring reliable, predictable motor characteristics
- Drone Gimbal Stabilization: Actuators for camera gimbal systems where precise speed control and compact form factor enable smooth, jitter-free video stabilization
How to Use
To integrate the Pololu 4793 / 4792 Micro Metal Gearmotor into your project, first establish secure mechanical mounting using the integrated flanges and appropriate fasteners for your application. Connect the motor leads directly to your 6V power source through a suitable motor driver circuit such as an L298N H-bridge module or equivalent, which enables bidirectional control and PWM speed regulation. For microcontroller integration, connect the driver's PWM input to a digital PWM-capable pin on your Arduino, Raspberry Pi, or similar platform to achieve variable speed control from 0-100% of maximum RPM.
Implement current limiting protection in your driver circuit to prevent excessive stall current from damaging the motor during mechanical jamming or high-load conditions. When operating at reduced voltages below the 6V nominal rating, expect proportionally reduced speed and torque output. For applications requiring bidirectional rotation, configure your motor driver for forward-reverse switching with appropriate dead-time delays to prevent shoot-through conditions. Always allow adequate cooling time during extended continuous operation, particularly when operating near stall conditions, and consider mechanical load optimization to maintain motor efficiency within the 0.2-0.5 A operating range for maximum component lifespan.
Frequently Asked Questions
What is the actual torque output of the Pololu 4793 380:1 gearmotor?
The stall torque at 6V is approximately 0.8 kg-cm (approximately 0.078 N-m). This represents the maximum holding torque when the motor is prevented from rotating under full voltage. For continuous operation, use approximately 50-70% of stall torque to ensure motor longevity and prevent thermal damage. The actual torque available depends on load characteristics and voltage applied, with proportional reduction when operating below 6V nominal.
Can I operate this motor at voltages different from 6V?
Yes, the Pololu Micro Metal Gearmotor can operate safely across 3-9V range, though performance specifications are optimized for 6V nominal operation. Operating below 6V reduces both speed and torque proportionally, suitable for applications requiring lower power consumption. Voltages above 6V increase speed and torque but reduce motor lifespan due to increased brush wear and winding stress. Always use appropriate current-limiting circuitry to prevent excessive current draw at higher voltages.
What is the backlash specification of the 380:1 planetary gearbox?
The Pololu planetary gearbox design exhibits minimal backlash of approximately 3-5 degrees, significantly lower than comparable spur gear designs. This low backlash characteristic makes it suitable for precision positioning applications where directional accuracy is critical. However, for applications requiring zero-backlash performance, consider implementing mechanical backlash compensation in your control algorithm or adding a spring-loaded anti-backlash mechanism in the output coupling.
How do I control the speed of this motor using a microcontroller?
Connect the motor through an H-bridge motor driver module such as L298N or DRV8833, then apply PWM signals from your microcontroller to the driver's speed control input. PWM frequency should be 1-20 kHz for optimal performance. At 0% PWM duty cycle, the motor stops; at 100% duty cycle, it operates at full speed. Intermediate duty cycles provide proportional speed control. Most Arduino and Raspberry Pi platforms provide built-in PWM capabilities on designated pins.
Is this motor suitable for continuous operation or intermittent use only?
The Pololu 4793 / 4792 is designed for continuous operation under normal load conditions, typically up to 0.3-0.4 A continuous current. Extended operation near stall current (0.5 A) generates significant heat and reduces motor lifespan. For applications requiring continuous high-torque output, implement thermal management such as aluminum heat-sink mounting or forced air cooling. Intermittent duty cycles with adequate cooling periods between operations extend motor life significantly.
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.
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- Returns: 7-day return policy on manufacturing defects only
Buy Pololu 4793 / 4792 Micro Metal Gearmotor MP 6V - 380:1 Online in India
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