--- product_id: 803859622 title: "4Pcs 3.17mm to 3.17mm Rigid Motor Shaft Coupling Coupler Sleeve Coupling Adapter for 3D Printers RC Motor Accessories" brand: "daier" price: "S$20" currency: SGD in_stock: true reviews_count: 7 category: "Daier" url: https://www.desertcart.sg/products/803859622-4pcs-3-17mm-to-3-17mm-rigid-motor-shaft-coupling store_origin: SG region: Singapore --- # 3.17mm precision fit 4-screw rigid locking 22mm compact length 4Pcs 3.17mm to 3.17mm Rigid Motor Shaft Coupling Coupler Sleeve Coupling Adapter for 3D Printers RC Motor Accessories **Brand:** daier **Price:** S$20 **Availability:** ✅ In Stock ## Summary > ⚙️ Lock in precision, power your projects flawlessly! ## Quick Answers - **What is this?** 4Pcs 3.17mm to 3.17mm Rigid Motor Shaft Coupling Coupler Sleeve Coupling Adapter for 3D Printers RC Motor Accessories by daier - **How much does it cost?** S$20 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/803859622-4pcs-3-17mm-to-3-17mm-rigid-motor-shaft-coupling) ## Best For - daier enthusiasts ## Why This Product - Trusted daier brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rock-Solid Stability:** Four machine screws lock the coupling firmly, eliminating rotation gaps for high-torque reliability. - • **Versatile Application:** Ideal for motor and gearbox assemblies, perfect for professionals who demand precision and durability. - • **Compact & Durable Design:** Crafted from 45# steel with corrosion resistance, built to last in demanding mechanical setups. - • **Precision Engineered Fit:** Exact 3.17mm to 3.17mm diameter ensures zero backlash and seamless motor-to-shaft connection. - • **Maintenance-Free Performance:** Oil-proof and corrosion-resistant for hassle-free, long-term use in 3D printers, RC models, and more. ## Overview This 4-piece set of 3.17mm rigid motor shaft couplings offers a precision-engineered, maintenance-free solution for high-torque motor-to-shaft connections. Made from durable 45# steel with a 90-degree fixing design and secured by four machine screws, these couplers ensure zero rotation gap and excellent stability, ideal for 3D printers, RC vehicles, and mechanical drives. ## Description Description: Made from 45# Steel material to reduce inertia Rigid coupling,high torque with rigidity,low inertia and excellent sensitivity No rotation gap, elastic action can make up for symmetrical angular misalignment Maintenance-free, oil proof and corrosion resistance Suitable for model car, model boat, hardware, , mechanical drive situations etc Feature: 4 pcs screws design Thread Size: M4 Color: Silver Tone Material: Steel Total Length: 22mm /0.87 inch Outside Diameter : 14mm/ 0.55 inch Through Angle: 90 Degree Package include: 4 Pcs x Rigid Shaft Coupler 16 Pcs x M4 Screws 1 Pcs x Allen Wrench Review: Works! - They work well to connect a 8mm motor to a 12mm axle. Review: It's exactly what it says it is - Worked great for exactly what I needed them for. I ended up Machining these down to a different size and I was able to machine it cleanly though I'm sure that's not what most of you are buying it for ## Features - Connection Diameter: 3.17mm to 3.17mm, Total Length: 22mm /0.87 inch, Outside Diameter : 14mm/ 0.55 inch. - The rigid coupling is 90 degree fixing design, and it is fixed by four machine screws. - Wide Application: Ideal for motor and gearbox assemblies, this coupler provides a sturdy and stable connection to hold various components tightly together. - NOTE: The rigid type basically does not allow eccentricity, and it must be fully adjusted during use. - Single piece set screw clamp design makes it easy to set up the items on the shaft and control the holding capacity of the coupling. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.5 out of 5 stars 30 Reviews | ## Images ![4Pcs 3.17mm to 3.17mm Rigid Motor Shaft Coupling Coupler Sleeve Coupling Adapter for 3D Printers RC Motor Accessories - Image 1](https://m.media-amazon.com/images/I/71Jp3pCESBL.jpg) ![4Pcs 3.17mm to 3.17mm Rigid Motor Shaft Coupling Coupler Sleeve Coupling Adapter for 3D Printers RC Motor Accessories - Image 2](https://m.media-amazon.com/images/I/61MU2NyecuL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works! *by J***G on August 30, 2026* They work well to connect a 8mm motor to a 12mm axle. ### ⭐⭐⭐⭐⭐ It's exactly what it says it is *by L***R on July 28, 2026* Worked great for exactly what I needed them for. I ended up Machining these down to a different size and I was able to machine it cleanly though I'm sure that's not what most of you are buying it for ### ⭐⭐⭐⭐⭐ Good fit *by D***Y on February 24, 2026* I used these for a custom rock tumbler I made and they work perfectly. --- ## 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.sg/products/803859622-4pcs-3-17mm-to-3-17mm-rigid-motor-shaft-coupling](https://www.desertcart.sg/products/803859622-4pcs-3-17mm-to-3-17mm-rigid-motor-shaft-coupling) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-09-20*