--- product_id: 14227923 title: "RS-550S 18V Brushed DC Motor, 3.175mm Round Shaft, 6V-24V, Drill Repairs" brand: "protechtrader" price: "$36.73" currency: USD in_stock: true category: "Pro Tech Trader" url: https://www.desertcart.us/products/14227923-rs-550s-18v-brushed-dc-motor-3-175mm-round-shaft store_origin: US region: United States of America --- # 18V Optimal Voltage 1/8in Precision Shaft 20,000 RPM Max Speed RS-550S 18V Brushed DC Motor, 3.175mm Round Shaft, 6V-24V, Drill Repairs **Brand:** protechtrader **Price:** $36.73 **Availability:** ✅ In Stock ## Summary > ⚙️ Power your projects with precision and speed – don’t get left behind! ## Quick Answers - **What is this?** RS-550S 18V Brushed DC Motor, 3.175mm Round Shaft, 6V-24V, Drill Repairs by protechtrader - **How much does it cost?** $36.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/14227923-rs-550s-18v-brushed-dc-motor-3-175mm-round-shaft) ## Best For - protechtrader enthusiasts ## Why This Product - Trusted protechtrader brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Speed Demon:** Reaches up to 20,000 RPM for rapid, efficient operation in robotics and power tools. - • **Precision Fit:** Round shaft with a 1/8 inch diameter ensures seamless compatibility with many cordless drills and RC vehicles. - • **Lightweight & Compact:** At just 7.7 oz and 2.24 inches long, it fits tight spaces without compromising power. - • **Powerhouse Performance:** Delivers a robust 180W output for demanding DIY and professional projects. - • **Versatile Voltage Range:** Operates smoothly between 6V and 20V, with peak efficiency near 18V for optimal torque and speed. ## Overview The RS-550s 18V brushed DC motor is a compact, high-performance engine designed for DIY electronics, robotics, and power tool replacements. With a 1/8 inch round shaft, 180W power output, and speeds up to 20,000 RPM, it offers versatile voltage compatibility (6-20V) and reliable torque, making it a top choice for millennial makers and professionals seeking efficient, lightweight motor solutions. ## Description desertcart.com: RS-550s 18v (12v - 20 Volts) DC Motor Round Shaft - High Power & Torque for DIY Electric/Electronic Projects, Drills, Robots, RC Vehicals, Remote Controlled Cars/Robot, Saw Repair/Replacement Engine : Toys & Games ## Features - RS-550s Brushed DC Motor Weight: ~7.7oz (218g) Body Length: 2.24in (57mm) Body Diameter: 1.46in (37.5mm) - Operating Voltage: ~6v - 20v | Optimal Volt Range: 12v - 18v | 18 Volt Nominal (Optimal Power, Speed, and Torque near 18 volts) - Shaft Length ~0.35 inch / ~11/32in or ~9mm | Diameter ~0.125 inch / 1/8in or ~3.175mm | Style: Round | Stall Current: ~85A | Efficiency: ~70% | No Load RPM: ~20000 rpms | RPM Peak Efficiency: ~17000 rpms - Designed as a Power Tool Drill motor and may replace motors in many 3/8in drills and other cordless and outdoor tools. Popular choice for DIY Electronics and Robotics, PowerWheels, and some Gate Openers. Will not work or fit in all models, be sure to check your specific applications requirements before purchasing - PLEASE NOTE: If your replacing a motor please be sure to verify the motor matches your dimensions and shaft length and diameter before purchasing. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00TE42PME | | Amperage | 10 A | | Best Sellers Rank | #120,698 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #173 in Electric Fan Motors | | Brand Name | ProTechTrader | | Customer Reviews | 4.4 4.4 out of 5 stars (320) | | Global Trade Identification Number | 00789048342524 | | Horsepower | 180 watts | | Included Components | Motor | | Item Dimensions W x H | 1.46"W x 2.24"H | | Item Weight | 7.7 ounces | | Manufacturer | ProTechTrader | | Material Type | Alloy Steel | | Model | RS-550 | | Part Number | RS-550S-R | | Shaft Diameter | 37.5 millimeters | | Speed | 20000 rpm | | UPC | 789048342524 | | Unit Count | 1 Count | | Voltage | 12 volts | ## Product Details - **Brand:** ProTechTrader - **Horsepower:** 180 watts - **Product Dimensions:** 1.46"W x 2.24"H - **Speed:** 20000 rpm - **Voltage:** 12 volts ## Images ![RS-550S 18V Brushed DC Motor, 3.175mm Round Shaft, 6V-24V, Drill Repairs - Image 1](https://m.media-amazon.com/images/I/51PvwvyqGtL.jpg) ## Available Options This product comes in different **Number Of Items** options. ## Questions & Answers **Q: Can i use it to make a electric scooter carrying 50kg load** A: I think so maybe if you're running 24 volts. I run 24 volts with my kids electric 4-wheelers and electric dirt bike.They are 5 and 3 thier Electric bikes fly with them on it. My wife weighs 120 she rides the electric four wheeler when my son gets mad back home. **Q: how many turns is this motor** A: James, this is a 33 turn motor. **Q: Has anyone tried this in a kids power wheels running 18v tool battery** A: Yes, I can say we have had multiple customer replace power wheels motors with these motors. Depending on the model power wheels and you configuration this could be a drop in replacement. You will need to be sure you have no more then 10 amps being pulled by each motor consistently or the motors may overheat, and you will have to have the correct gear size to fit your power wheels on the shaft, but again many DIYers have reported using these motors in Power Wheels as a upgrade **Q: do you have shaft adapters or extentions for this motor** A: I am sorry we do not have any accessories for them since they were manufacture leftovers that never got used, so we just have the loose motors. We do have a nearly identical motor for sale on Amazon with a gear pre-installed at the factory. It is available here: http://www.amazon.com/RS-550s-18v-6v-Torque-Drills/dp/B00WQBVDJI/ref=sr_1_8?ie=UTF8&qid=1435507507&sr=8-8&keywords=dc+motor+18v ## Frequently Bought Together - RS-550s 18v (12v - 20 Volts) DC Motor Round Shaft - High Power & Torque for DIY Electric/Electronic Projects, Drills, Robots, RC Vehicals, Remote Controlled Cars/Robot, Saw Repair/Replacement Engine - RioRand 12V-40V 10A PWM DC Motor Speed Controller with Knob-High Efficiency, High Torque, Low Heat Generating with Reverse Polarity Protection, High Current Protection --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/14227923-rs-550s-18v-brushed-dc-motor-3-175mm-round-shaft](https://www.desertcart.us/products/14227923-rs-550s-18v-brushed-dc-motor-3-175mm-round-shaft) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-30*