--- product_id: 89437714 title: "RS-550S 18V Brushed DC Motor, 3.175mm D-Shaft, 6V-24V, 20K RPM for Drills" brand: "protechtrader" price: "₨646" currency: SCR in_stock: true category: "Pro Tech Trader" url: https://www.desertcart.sc/products/89437714-rs-550s-18v-brushed-dc-motor-3-175mm-d-shaft store_origin: SC region: Seychelles --- # 18V optimal voltage 3.175mm D-shaped shaft 20,000 RPM no-load speed RS-550S 18V Brushed DC Motor, 3.175mm D-Shaft, 6V-24V, 20K RPM for Drills **Brand:** protechtrader **Price:** ₨646 **Availability:** ✅ In Stock ## Summary > ⚡ Power your projects with precision and speed! ## Quick Answers - **What is this?** RS-550S 18V Brushed DC Motor, 3.175mm D-Shaft, 6V-24V, 20K RPM for Drills by protechtrader - **How much does it cost?** ₨646 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/89437714-rs-550s-18v-brushed-dc-motor-3-175mm-d-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 - • **Precision Fit Design:** 3.175mm D-shaped shaft and dual M3 mounting holes ensure secure, reliable installation. - • **Lightweight & Compact:** At just 218g with a 57mm x 37.5mm body, it fits seamlessly into tight spaces without bulk. - • **DIY-Ready Compatibility:** Perfect for drills, robots, ride-on toys, and gate openers—upgrade your gear with confidence. - • **Versatile Voltage Range:** Operates smoothly from 6V to 24V, optimized for 12V-18V applications to match your project needs. - • **Power-Packed Performance:** Delivers a robust 180W output for high-efficiency drill repairs and DIY projects. ## Overview The RS-550S 18V Brushed DC Motor by ProTechTrader is a high-speed, compact motor featuring a 3.175mm D-shaped shaft and carbon brushes. Operating optimally between 12V and 18V, it reaches up to 20,000 RPM no-load speed, delivering 180 watts of power. Designed for versatile DIY applications including drills, robots, and ride-on toys, it offers a lightweight 218g build with precise mounting options for reliable installation. ## Description This RS-550S brushed DC motor uses carbon brushes and a D-shaped output shaft. The motor operates from 6V to 24V, with a 12V to 18V optimal range and 18V nominal operation. No-load speed is about 20,000 RPM near 18V. The D-shaft measures about 3.175mm in diameter and 9mm long. The round motor body is about 57mm long and 37.5mm in diameter, with two M3 mounting holes. Weight is about 218g. Use this RS550 DC motor for compatible drill repairs, robots, ride-on toy projects, gate opener projects, and other DIY electronics. It will not fit every application. Compare voltage, body size, mounting pattern, shaft style, shaft length, shaft diameter, and current requirements before ordering. ## Features - RS-550S brushed DC motor has carbon brushes, a 57mm x 37.5mm body, and weighs about 218g for repair projects. - Runs from 6V to 24V with an optimal 12V to 18V range and reaches about 20,000 RPM with no load near 18V. - D-shaped shaft measures about 3.175mm in diameter and 9mm long; verify the shaft profile before replacement. - Two M3 mounting holes support installation in suitable drills, robots, ride-on toys, and DIY electronics builds. - Fit is not universal; compare body size, mounting holes, voltage, D-shaft dimensions, and current needs first. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DYTM7NQ | | Best Sellers Rank | #481,664 in Toys & Games ( See Top 100 in Toys & Games ) #1,288 in RC Electric Motors | | Brand Name | ProTechTrader | | Customer Reviews | 3.9 3.9 out of 5 stars (80) | | Horsepower | 180 watts | | Included Components | Motor | | Manufacturer | ProTechTrader | | Material Type | carbon | | Model | RS-550S-D | | Number of Items | 1 | | Part Number | RS-550S-D | | Shaft Diameter | 3.18 millimeters | | Speed | 20000 rpm | | UPC | 789048342517 | | Voltage | 18 volts | ## Product Details - **Brand:** ProTechTrader - **Horsepower:** 180 watts - **Material:** carbon - **Speed:** 20000 rpm - **Voltage:** 18 volts ## Images ![RS-550S 18V Brushed DC Motor, 3.175mm D-Shaft, 6V-24V, 20K RPM for Drills - Image 1](https://m.media-amazon.com/images/I/71DkS5eOPEL.jpg) ## Available Options This product comes in different **Number Of Items** options. ## Questions & Answers **Q: what size shaft adapter would i need to install a v-belt pulley on this motor? thank you** A: A 3.175MM BORE PULLEY WHEEL OF VARYING OUTER SIZE IS YOUR PERFECT FIT. **Q: Will this fit a bosch 18v cordless drill model ddb191?** A: I don't know. You might have to call the company to find out. Sorry!! **Q: Can you change direction by change current direction?** A: Yes, that's the case with any dc motor. Have fun!! **Q: Does this motor require any special kind of driver? ordered this, hooked it up to 18v, 3a power supply. it just sits there an twitches.** A: At 5v-14v is the comfort zone for this motor 18v-24v will spike up intense heat that can inflictse ## Frequently Bought Together - 18v DC Motor Drill RS-550 D-Shaft 1/8in / 3.175mm Shaft - Fan Cooled High Torque 20K RPM Power Tool Replacement Upgrade 18 Volt (12v - 24v DC) DIY Electric Projects Robots Remote Controlled Car - 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 --- ## 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.sc/products/89437714-rs-550s-18v-brushed-dc-motor-3-175mm-d-shaft](https://www.desertcart.sc/products/89437714-rs-550s-18v-brushed-dc-motor-3-175mm-d-shaft) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-08-31*