ProTechTrader RS-550s 18v (12v - 20v) DC Motor Round Shaft High (Model: RS-550S-18v-R)

Quick Product Overview

The ProTechTrader RS-550S 18V DC Motor delivers high-torque rotary performance with operating speeds up to 18,000 RPM. Featuring a 3.175mm (1/8") round shaft and internal cooling fan, it is designed for power tool repairs, custom robotics, and motor replacement projects.

ProTechTrader RS-550S 18V DC Motor - High Torque Round Shaft (12V-20V) Premium DC Motor for Robotics, Power Tools, RC Vehicles & Maker Projects

The ProTechTrader RS-550S-18V-R is a professional-grade DC motor engineered to deliver exceptional power and reliability for your most demanding projects. Part of the renowned RS-550 series, this high-torque motor operates efficiently across a 12V-20V range, making it the ideal choice for robotics enthusiasts, DIY makers, RC vehicle builders, and power tool applications.

Whether you're building a competition robot, upgrading power tools, constructing custom RC vehicles, or developing innovative DIY projects, this RS-550S motor provides the performance and durability you need to bring your ideas to life. The round shaft design ensures broad compatibility with standard couplings, gears, and mounting brackets available throughout the maker community.

Why Choose the RS-550S DC Motor?

The RS-550 series has earned its reputation as an industry workhorse, trusted by engineers and hobbyists worldwide. This motor delivers impressive torque output that translates directly into real-world performance—whether you're powering through tough materials, climbing steep terrain, or requiring sustained power under load. The 18V nominal voltage rating with 12V-20V operating range provides flexibility to match your power supply while maintaining optimal efficiency.

Unlike cheaper alternatives, the RS-550S features quality construction with precision-balanced components, durable carbon brushes, and robust bearing systems that ensure smooth operation and extended service life. The round shaft configuration makes integration straightforward, eliminating the need for custom adapters or complex mounting solutions.

Key Features & Benefits

• High Torque Output: Delivers powerful performance for demanding applications including robotics competitions, power tool conversions, and heavy-duty RC vehicles
• Flexible Voltage Range: Operates efficiently from 12V to 20V, allowing you to optimize speed and torque for your specific application
• 18V Nominal Rating: Perfectly balanced performance at standard 18V power tool battery voltages
• Round Shaft Design: Universal compatibility with standard couplings, pulleys, gears, and mounting hardware
• RS-550 Series Quality: Industry-proven motor platform known for reliability and consistent performance
• Precision Engineering: Balanced rotor assembly minimizes vibration for smooth, quiet operation
• Durable Construction: Quality carbon brushes and robust bearing system ensure long service life
• Versatile Applications: Perfect for robotics, DIY projects, RC vehicles, power tools, automation systems, and prototype development
• Excellent Heat Dissipation: Efficient thermal management allows sustained operation under load

Technical Specifications

• Model Number: RS-550S-18V-R
• Nominal Voltage: 18V DC
• Operating Voltage Range: 12V - 20V DC
• Motor Series: RS-550
• Shaft Type: Round shaft
• Motor Type: Brushed DC motor
• Torque Classification: High torque

Popular Applications

• Robotics: Battle bots, combat robots, autonomous vehicles, robotic arms, and competition robots
• RC Vehicles: Rock crawlers, monster trucks, drift cars, and custom RC builds requiring high torque
• Power Tools: Drills, saws, grinders, and custom tool conversions
• DIY Projects: Electric skateboards, go-karts, winches, and mechanical automation
• Educational Projects: STEM learning, engineering prototypes, and classroom demonstrations
• Industrial Applications: Conveyor systems, actuators, and automated machinery

What's Included

• 1x ProTechTrader RS-550S 18V DC Motor with Round Shaft

Fast Shipping & Quality Guarantee

Your RS-550S motor is in stock and ready to ship within 1 business day. We understand that when inspiration strikes or your project needs a critical component, time matters. Orders over $35 qualify for free shipping, getting your motor to your workbench quickly so you can start building.

At just $13.29, this professional-grade DC motor delivers exceptional value without compromising on quality or performance. It's the smart choice for makers who demand reliability and power at a competitive price point.

Order Your RS-550S DC Motor Today

Don't let an inferior motor compromise your project's potential. The ProTechTrader RS-550S 18V DC motor provides the power, torque, and reliability your builds deserve. Whether you're an experienced engineer or just starting your maker journey, this versatile motor will exceed your expectations.

Add to cart now and experience the difference a quality RS-550S motor makes in your next project. In stock and ready to ship—order today!

Technical Specifications Nominal Voltage18V DC (Operating Range: 12V - 20V DC) No-Load Speed18,000 RPM @ 18V Shaft TypeRound Shaft (3.175mm / 1/8 inch diameter) Shaft Length12mm protruding Motor Body Diameter37.5mm (1.47 inches) Motor Body Length57mm (2.24 inches) CoolingInternal cooling fan blades Frequently Asked Questions Q: Can this RS-550S motor replace 18V cordless drill motors?

Yes, the RS-550S is a standard form-factor replacement for 18V cordless drills and rotary power tools.

Q: What is the shaft diameter?

It has a standard 3.175mm (1/8 inch) round shaft for press-fit pinions or couplers.

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