{"product_id":"pololu-4780-4781-micro-metal-gearmotor-lp-6v-15-1-gear-ratio","title":"Pololu 4780 \/ 4781 Micro Metal Gearmotor LP 6V - 15:1 gear ratio","description":"\u003cmeta name=\"description\" content=\"Buy Pololu 4780 \/ 4781 Micro Metal Gearmotor LP 6V - 15:1 gear ratio online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003ePololu 4780 \/ 4781 Micro Metal Gearmotor LP 6V - 15:1 gear ratio\u003c\/h1\u003e\n\n\u003cp\u003eThe Pololu 4780 \/ 4781 Micro Metal Gearmotor LP is a compact, high-torque DC motor with an integrated 15:1 gearbox designed for 6V operation, delivering precise speed reduction and increased rotational force in a minimal footprint. Roboticists, embedded systems engineers, and hobbyists use this motor extensively in mobile robots, line-following vehicles, autonomous systems, and precision automation projects where space constraints and consistent torque delivery are critical. This motor solves the fundamental challenge of balancing motor speed with practical torque requirements, eliminating the need for external gearbox assemblies while maintaining reliability and repeatability in demanding applications.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe Pololu 4780 \/ 4781 Micro Metal Gearmotor LP operates on a brushed DC motor architecture combined with a precision spur gear reduction system that converts high-speed, low-torque motor output into lower-speed, higher-torque output suitable for mechanical load applications. The 15:1 gear ratio provides the optimal balance between speed reduction and torque multiplication, delivering approximately 0.3 kg-cm of torque at the output shaft while maintaining reasonable rotational speeds for wheeled platforms and mechanical systems. The motor shaft features a D-shaped profile with a 3mm diameter, enabling secure coupling with standard robot wheels, encoders, and mechanical assemblies without slippage.\u003c\/p\u003e\n\n\u003cp\u003eThis low-power variant is engineered specifically for battery-powered applications where current draw and thermal efficiency directly impact runtime and system reliability. The integrated gearbox utilizes hardened metal gears with minimal backlash, ensuring smooth power transmission and predictable motion control essential for autonomous navigation and precision positioning tasks. The compact cylindrical housing measures just 10mm in diameter and 20mm in length, making it ideal for space-constrained robotic platforms, miniature vehicles, and integrated mechanical systems where every millimeter of available space must be optimized.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eBrushed DC Micro Metal Gearmotor with Integrated Reduction Gearbox\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePololu Robotics and Electronics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e6V DC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGear Ratio\u003c\/td\u003e\n\u003ctd\u003e15:1 spur gear reduction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo-Load Speed\u003c\/td\u003e\n\u003ctd\u003eApproximately 200 RPM at 6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStall Torque\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.3 kg-cm at 6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Shaft Diameter\u003c\/td\u003e\n\u003ctd\u003e3mm D-shaped profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e10mm diameter x 20mm length (motor body)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 5 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003ePrecision 15:1 gear ratio delivers optimal torque multiplication from compact form factor, enabling reliable wheel drive in small robots and autonomous vehicles without external gearbox complexity\u003c\/li\u003e\n\u003cli\u003eBrushed DC motor architecture with integrated spur gearbox provides consistent, predictable torque output across the 6V operating range with minimal speed variation under load\u003c\/li\u003e\n\u003cli\u003eD-shaped 3mm output shaft ensures positive mechanical coupling with standard robot wheels, encoders, and mechanical assemblies, eliminating slippage during high-demand operations\u003c\/li\u003e\n\u003cli\u003eUltra-compact cylindrical housing measuring 10mm diameter enables integration into space-constrained robotic platforms, miniature vehicles, and embedded mechanical systems\u003c\/li\u003e\n\u003cli\u003eLow current draw at no-load operation maximizes battery runtime in portable applications while reducing thermal stress on motor windings for extended operational lifespan\u003c\/li\u003e\n\u003cli\u003eHardened metal gears with precision manufacturing minimize backlash and ensure smooth power transmission for accurate position control and repeatable motion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eMobile robot wheel drive systems where compact size and consistent torque are essential for line-following robots, obstacle-avoidance platforms, and autonomous navigation vehicles\u003c\/li\u003e\n\u003cli\u003eRobotic arm and gripper actuation in educational robotics kits and research platforms requiring precise speed control and reliable torque delivery in repetitive mechanical tasks\u003c\/li\u003e\n\u003cli\u003eAutonomous vehicle propulsion in miniature ground vehicles, tracked platforms, and wheeled exploration robots operating in constrained environments with battery power limitations\u003c\/li\u003e\n\u003cli\u003eMechanical automation and precision positioning in laboratory equipment, automated testing rigs, and embedded control systems requiring compact motor solutions with integrated gear reduction\u003c\/li\u003e\n\u003cli\u003eEncoder coupling applications where the D-shaped shaft provides secure mechanical interface for rotational speed feedback in closed-loop motor control systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eTo integrate the Pololu 4780 \/ 4781 Micro Metal Gearmotor into your project, first secure the motor body using the mounting tabs or adhesive backing to your robot chassis or mechanical assembly, ensuring the output shaft extends freely without obstruction. Connect the motor leads (typically red for positive and black for negative) to your motor control circuit through an appropriate motor driver IC such as the L298N, DRV8835, or equivalent, which provides the necessary current amplification and directional control for the 6V DC supply. The motor operates immediately upon voltage application with no additional configuration required, though adding a rotary encoder to the output shaft enables speed feedback for closed-loop control systems.\u003c\/p\u003e\n\n\u003cp\u003eFor optimal performance and longevity, maintain the 6V nominal operating voltage within the range of 4.5V to 9V, with voltage excursions beyond this range potentially causing accelerated brush wear or winding damage. If driving wheels or mechanical loads, ensure the output shaft coupling is secure and balanced to prevent vibration and premature gear wear. For applications requiring variable speed control, use PWM (Pulse Width Modulation) signals at frequencies between 5kHz and 20kHz to modulate the average voltage while maintaining smooth motor operation without audible cogging or efficiency loss.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the Pololu 4780 and 4781 micro metal gearmotor models?\u003c\/summary\u003e\n\u003cp\u003eThe Pololu 4780 and 4781 are functionally equivalent micro metal gearmotors with identical specifications including the 15:1 gear ratio, 6V operating voltage, and output shaft configuration. The model designation difference typically reflects manufacturing batch variations or minor packaging differences, with both units delivering identical performance characteristics. For your application, either model will provide the same torque output, speed performance, and mechanical reliability.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I operate this motor at voltages higher than 6V, such as 9V or 12V?\u003c\/summary\u003e\n\u003cp\u003eWhile the motor can tolerate voltages up to approximately 9V without immediate failure, operation above the 6V nominal rating significantly reduces motor lifespan by accelerating brush wear and increasing winding temperature. Operating at 12V will cause rapid deterioration of internal components and potential failure within hours of continuous operation. For voltage flexibility, consider using PWM control at the nominal 6V to achieve variable speed without exceeding safe operating parameters.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum load torque this motor can sustain continuously without damage?\u003c\/summary\u003e\n\u003cp\u003eThe Pololu 4780 \/ 4781 can sustain approximately 0.2 to 0.25 kg-cm of continuous torque without excessive heating or mechanical stress. Loads exceeding 0.3 kg-cm should be applied only intermittently, as sustained high torque operation generates internal heat that can damage the motor windings and reduce overall lifespan. For applications requiring continuous high torque, consider using multiple motors in parallel or selecting a higher-torque motor variant from Pololu's product line.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I add an encoder to this motor for speed feedback and closed-loop control?\u003c\/summary\u003e\n\u003cp\u003eYes, the D-shaped 3mm output shaft is compatible with Pololu magnetic encoders and other standard encoder modules designed for this shaft profile. Mounting an encoder allows you to implement closed-loop speed control, odometry calculations for navigation, and performance monitoring in your robotic application. Ensure the encoder is mechanically secured to prevent slippage and electrically isolated from the motor power supply to avoid noise interference in sensor readings.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe 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.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Tech Depot\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy Pololu 4780 \/ 4781 Micro Metal Gearmotor LP 6V - 15:1 gear ratio Online in India\u003c\/h2\u003e\n\n\u003cp\u003ePurchase the Pololu 4780 \/ 4781 Micro Metal Gearmotor LP 6V - 15:1 gear ratio 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 4780 \/ 4781 Micro Metal Gearmotor LP 6V - 15:1 gear ratio with fast shipping and expert support.\u003c\/p\u003e\n\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48743641710849,"sku":"TTD-8308","price":1901.75,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/2737d3289fb77c4aa339a2b96cc16aef.jpg?v=1778060840","url":"https:\/\/techdepot.in\/products\/pololu-4780-4781-micro-metal-gearmotor-lp-6v-15-1-gear-ratio","provider":"Tech Depot India","version":"1.0","type":"link"}