Pololu 4794 / 4795 380:1 Micro Metal Gearmotor HP 6V

The Pololu 4794 / 4795 380:1 Micro Metal Gearmotor HP 6V is a compact, high-performance brushed DC motor with integrated 380:1 metal gearbox designed for precision robotics, automation, and embedded systems requiring controlled torque and speed reduction. Professional engineers and hobbyists use this motor in wheeled robots, conveyor systems, automated machinery, and instrumentation where space constraints demand miniaturized yet reliable motion control. This gearmotor solves the critical challenge of delivering high torque output from a compact form factor while maintaining excellent efficiency and low backlash characteristics essential for accurate positioning applications.

Product Overview

The Pololu 4794 / 4795 380:1 Micro Metal Gearmotor represents the pinnacle of miniaturized motor technology, combining a coreless brushed DC motor with a precision metal gearbox to deliver exceptional torque multiplication. The motor operates on 6V nominal voltage and achieves the 380:1 gear reduction ratio through a multi-stage metal gear train, significantly reducing output speed while amplifying torque. The coreless motor design eliminates cogging and provides smooth, consistent power delivery across the entire speed range, making it ideal for applications requiring precise speed control and minimal vibration. The integrated metal gearbox features hardened steel gears and brass bushings that ensure minimal backlash, typically under 3 degrees, which is critical for robotic applications demanding positional accuracy.

This HP variant represents the high-power version optimized for applications requiring sustained torque delivery and continuous duty cycles. The motor incorporates sealed bearings and a robust gear train capable of handling significant mechanical loads without premature wear. The compact cylindrical housing measures approximately 10mm in diameter and 20mm in length, making it suitable for space-constrained applications like mobile robots, automated camera pan-tilt systems, and miniaturized automation equipment. The output shaft features a 2mm diameter with a flat edge for secure coupling to wheels, gears, or custom mechanical assemblies using standard set screws or press-fit techniques.

Key Specifications

Specification	Details
Product Type	Brushed DC Micro Metal Gearmotor with Integrated Gearbox
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
Nominal Voltage	6V DC
Gear Ratio	380:1
No-Load Speed at 6V	Approximately 50 RPM
Stall Torque at 6V	Approximately 5.8 kg-cm (0.57 Nm)
Output Shaft Diameter	2mm with flat edge
Motor Housing Diameter	10mm
Motor Housing Length	20mm
Backlash	Less than 3 degrees typical
Operating Temperature Range	-20 to +65 degrees Celsius

Key Features

• High gear ratio of 380:1 provides exceptional torque multiplication from compact form factor, delivering up to 5.8 kg-cm stall torque suitable for load-bearing robotic applications
• Coreless brushed DC motor design eliminates cogging and magnetic detent, ensuring smooth operation and consistent power delivery across variable speed ranges
• Precision metal gearbox with hardened steel gears and brass bushings minimizes backlash to under 3 degrees, critical for accurate positioning in automation and robotics
• Sealed bearing construction protects internal mechanisms from dust and moisture, extending operational lifespan in diverse environmental conditions
• Compact 10mm diameter cylindrical housing enables integration into space-constrained robotic platforms and miniaturized mechanical systems
• 2mm output shaft with flat edge design simplifies coupling to wheels, pulleys, and custom mechanical assemblies using standard fastening methods

Applications and Use Cases

• Mobile robotics platforms requiring precise wheel drive with high torque output, including differential drive robots, obstacle avoidance systems, and autonomous navigation vehicles
• Automated machinery and conveyor systems where controlled speed reduction and reliable torque delivery are essential for material handling and production line operations
• Pan-tilt camera systems and gimbal mechanisms requiring smooth, backlash-minimized motion control for surveillance, aerial imaging, and robotic vision applications
• Instrumentation and laboratory automation equipment including automated samplers, precision dispensers, and mechanical actuators for scientific research and industrial testing
• Hobby robotics projects, competition robots, and educational platforms where compact size and reliable performance are critical design constraints

How to Use

To implement the Pololu 4794 / 4795 380:1 Micro Metal Gearmotor HP 6V in your project, first establish the mechanical mounting using the motor housing diameter and securing it with appropriate brackets or custom mounts. Connect the motor leads to your power supply or motor controller, observing proper polarity: the red wire connects to positive voltage and the black wire to ground. For speed control, use a PWM (Pulse Width Modulation) motor driver capable of handling the motor's stall current, typically 1-2 amps at 6V nominal voltage. Ensure your power supply can deliver sufficient current for your application, as stalled motors will draw maximum current and may cause voltage sag in undersized supplies.

For mechanical coupling, attach your wheel, gear, or driven component to the 2mm output shaft using either a set screw through the shaft's flat edge or a press-fit coupling. Ensure the coupling is secure and balanced to prevent vibration during operation. When implementing feedback control, consider adding an encoder or Hall-effect sensor to monitor shaft rotation and enable closed-loop speed regulation. For robotics applications, implement current limiting in your motor driver to protect against stall conditions and excessive power consumption. Test the motor at various duty cycles and monitor temperature; the motor can safely operate continuously at 6V, but extended stall conditions should be avoided to prevent thermal damage to the windings.

Frequently Asked Questions

What is the difference between Pololu 4794 and 4795 models?

The Pololu 4794 and 4795 are both 380:1 Micro Metal Gearmotors with identical specifications and performance characteristics. The model number variation may reflect different manufacturing batches or regional distribution channels, but functionally they are equivalent units. Both feature the same coreless motor design, metal gearbox construction, and 6V nominal operating voltage. You can use either model number interchangeably for your application without any performance differences.

Can I operate this motor at voltages other than 6V?

While the motor is rated for 6V nominal operation, it can tolerate brief exposure to voltages between 4.5V and 9V without immediate damage. Operation below 4.5V will result in insufficient torque and speed, while sustained operation above 6V will accelerate brush wear and reduce motor lifespan. For optimal performance and longevity, maintain the supply voltage within 5.5V to 6.5V. If your application requires different voltage levels, consider using a voltage regulator or selecting a different Pololu gearmotor variant specifically rated for your voltage range.

How do I control the speed of this gearmotor?

Speed control is achieved using PWM (Pulse Width Modulation) applied through a motor driver circuit. By varying the duty cycle of the PWM signal between 0 and 100 percent, you can smoothly adjust motor speed from zero to maximum RPM. Popular microcontroller platforms like Arduino can generate PWM signals on designated pins. Connect your motor to a PWM-capable motor driver such as the Pololu DRV8835 or similar, which accepts PWM input and delivers the appropriate current to the motor. This method provides smooth speed control without significant efficiency loss and allows for bidirectional rotation control by reversing the polarity.

What is the maximum continuous current draw of this motor?

At 6V nominal voltage with typical load, the Pololu 4794 / 4795 380:1 gearmotor draws approximately 100-200mA during normal operation. However, stall current can reach 1.5-2 amps when the motor is mechanically blocked or under maximum load. Your power supply and motor driver must be rated for at least 2 amps continuous to safely handle worst-case scenarios. For battery-powered applications, ensure your battery can deliver sufficient current without excessive voltage sag, as this will affect motor performance and responsiveness.

Is this motor suitable for outdoor or wet environments?

The Pololu 4794 / 4795 features sealed bearings and an enclosed gearbox design that provides protection against dust and light moisture exposure. However, it is not rated as fully waterproof and should not be submerged or exposed to heavy rain or water spray. For outdoor applications, consider mounting the motor in a protected enclosure or using a conformal coating on the circuit board connections. If your application requires true waterproofing, you may need to explore specialized sealed motor variants or implement additional protective measures around the motor assembly.

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 4794 / 4795 380:1 Micro Metal Gearmotor HP 6V Online in India

Purchase the Pololu 4794 / 4795 380:1 Micro Metal Gearmotor HP 6V online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.

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