{"product_id":"rigid-shaft-coupling-set-4-10mm-motor-connector-rc-boat-car","title":"Rigid Shaft Coupling 4–10mm | RC Boat \u0026 Car Motor Connector Set","description":"\u003ch2\u003eRigid Shaft Coupling Set – Precision Motor Connector Sleeve for RC Car, Boat \u0026amp; Mechanical Projects\u003c\/h2\u003e\n\u003cp\u003eKeep your RC builds and mechanical transmissions running smoothly with this versatile \u003cstrong\u003eRigid Shaft Coupling Set\u003c\/strong\u003e. Machined from \u003cstrong\u003e45# steel (GB standard)\u003c\/strong\u003e, these couplings deliver solid, slip-free torque transfer between motor shafts — ideal for RC boats, RC cars, DIY robotics, hardware tooling, and general mechanical transmission applications.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e90° fixing design\u003c\/strong\u003e secured by four machine screws ensures a rock-solid connection that stays locked under load. Each set comes complete with the coupling, four fixing screws, and a hex wrench — everything you need for a quick and confident installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium 45# Steel Construction\u003c\/strong\u003e – High-strength GB-grade steel for lasting durability and reliable power transmission\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e90° Fixed Design\u003c\/strong\u003e – Secured by four machine screws for maximum grip and zero slippage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Size Options\u003c\/strong\u003e – Choose from 4mm–4mm, 6mm–6mm, 6mm–8mm, 8mm–8mm, or 8mm–10mm bore configurations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight\u003c\/strong\u003e – 22mm length fits neatly within tight RC chassis and mechanical assemblies\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility\u003c\/strong\u003e – Suitable for RC boats, RC cars, motors, molds, and general mechanical transmission setups\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilver Finish\u003c\/strong\u003e – Clean, corrosion-resistant surface treatment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 45# Steel (GB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 22mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 14mm \/ 16mm (varies by size)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew Hole Diameter:\u003c\/strong\u003e 4mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Bore Types:\u003c\/strong\u003e 4mm–4mm | 6mm–6mm | 6mm–8mm | 8mm–8mm | 8mm–10mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Rigid Shaft Coupling\u003c\/li\u003e\n  \u003cli\u003e4 × Fixing Machine Screws\u003c\/li\u003e\n  \u003cli\u003e1 × Hex Wrench\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGreat Pairings for Your RC \u0026amp; DIY Projects\u003c\/h3\u003e\n\u003cp\u003eLooking to complete your build? Check out these related products from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e – Keep your drive components in top shape\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e – Essential for any workshop or DIY setup\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/60cm-motorcycle-luggage-strap-elastic-helmet-bungee-net\"\u003e60cm Motorcycle Luggage Strap – Elastic Helmet Bungee Net\u003c\/a\u003e – Handy for transporting RC vehicles and gear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Screen color settings may cause slight variation in the appearance of the product color. Please allow for minor measurement tolerances (±0.5mm).\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What bore size options are available for this rigid shaft coupling?\u003c\/h4\u003e\n\u003cp\u003eA: This shaft coupling set is available in five bore configurations: 4mm–4mm, 6mm–6mm, 6mm–8mm, 8mm–8mm, and 8mm–10mm. Select the option that matches your motor shaft and driven shaft diameters for a perfect fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What material is this motor shaft coupling made from?\u003c\/h4\u003e\n\u003cp\u003eA: The coupling is precision-machined from 45# steel (GB standard), a high-strength carbon steel widely used in mechanical transmission components. It offers excellent rigidity, wear resistance, and reliable torque transfer for RC and general mechanical applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this shaft coupling compatible with RC boats and RC cars?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This rigid shaft coupling is designed for use in RC boats, RC cars, DIY robotic builds, motor assemblies, mold machinery, and a wide range of general mechanical transmission setups. Just select the correct bore size for your motor shaft diameter.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is included in the package?\u003c\/h4\u003e\n\u003cp\u003eA: Each set includes one rigid shaft coupling, four machine fixing screws, and one hex wrench — everything you need for installation right out of the box.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What bore size options are available for this rigid shaft coupling?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This shaft coupling set is available in five bore configurations: 4mm–4mm, 6mm–6mm, 6mm–8mm, 8mm–8mm, and 8mm–10mm. 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Just select the correct bore size for your motor shaft diameter.\"}}, {\"@type\": \"Question\", \"name\": \"What is included in the package?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each set includes one rigid shaft coupling, four machine fixing screws, and one hex wrench — everything you need for installation right out of the box.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Rigid Shaft Coupling 4–10mm | RC Boat \u0026 Car Motor Connector Set\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/rigid-shaft-coupling-set-4-10mm-motor-connector-rc-boat-car\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"China Mainland \/ 5mm-8mm","offer_id":44137092579415,"sku":"100006028:201450691#5mm-8mm;200007763:201336100","price":9.55,"currency_code":"USD","in_stock":true},{"title":"China Mainland \/ 8mm-8mm","offer_id":44137092612183,"sku":"100006028:201451452#8mm-8mm;200007763:201336100","price":9.34,"currency_code":"USD","in_stock":true},{"title":"China Mainland \/ 6mm-6mm","offer_id":44137092644951,"sku":"100006028:201799825#6mm-6mm;200007763:201336100","price":9.7,"currency_code":"USD","in_stock":true},{"title":"China Mainland \/ 4mm-4mm","offer_id":44137092677719,"sku":"100006028:202107812#4mm-4mm;200007763:201336100","price":9.85,"currency_code":"USD","in_stock":true},{"title":"China Mainland \/ 8mm-10mm","offer_id":44137092710487,"sku":"100006028:201336457#8mm-10mm;200007763:201336100","price":9.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/S372255cedfc7470d8fda969c1a2ad800e.webp?v=1786445357","url":"https:\/\/axlcustomersupport.com\/products\/rigid-shaft-coupling-set-4-10mm-motor-connector-rc-boat-car","provider":"Axl","version":"1.0","type":"link"}