{"product_id":"d20l25-rigid-shaft-coupler-stepper-servo-motor-3d-printer-cnc","title":"D20L25 Rigid Shaft Coupler for 3D Printer \u0026 CNC Machines","description":"\n\u003ch2\u003eD20L25 Aluminium Rigid Shaft Coupler for Stepper \u0026amp; Servo Motors\u003c\/h2\u003e\n\u003cp\u003eKeep your 3D printer, CNC engraving machine, or CNC router running with precision-aligned shafts using this compact aluminium alloy rigid shaft coupler. Designed for exact shaft-to-shaft connection, this coupler ensures minimal runout and maximum torque transfer — ideal for CNC3018, CNC3020, and similar DIY machining setups.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e D20L25\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter (OD):\u003c\/strong\u003e 20mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Length (L):\u003c\/strong\u003e 25mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminium Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Rigid Shaft Coupler (Disc Structure)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Stepper motors, servo motors, 3D printers, CNC engraving machines (CNC3018, CNC3020)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 piece per order\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Alignment:\u003c\/strong\u003e Rigid construction ensures zero shaft misalignment for accurate motion control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Durable:\u003c\/strong\u003e Crafted from high-quality aluminium alloy — strong, corrosion-resistant, and lightweight.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Standard set-screw design for quick and secure shaft fastening without special tools.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Fits a broad range of stepper and servo motor shafts used in 3D printers and CNC routing machines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Small OD20 × L25mm form factor fits into tight machine frames without obstructing adjacent components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e3D printer axis drives (X, Y, Z)\u003c\/li\u003e\n  \u003cli\u003eCNC engraving \u0026amp; routing machines (CNC3018, CNC3020 and similar)\u003c\/li\u003e\n  \u003cli\u003eDIY robotics and automation projects\u003c\/li\u003e\n  \u003cli\u003eStepper and servo motor shaft connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-20mm-diamond-flat-grinding-wheel-dry-and-wet-use-heavy-duty-concrete-grinder-wheel-blue-vacuum-brazed\"\u003e10\/20mm Diamond Flat Grinding Wheel – Heavy Duty Concrete Grinder\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What shaft diameters does the D20L25 rigid shaft coupler support?\u003c\/h4\u003e\n\u003cp\u003eA: The D20L25 coupler has an outside diameter of 20mm and a length of 25mm. The bore size is determined by the set-screw clamp design, making it compatible with common stepper and servo motor shaft sizes used in CNC and 3D printer applications. Please confirm your motor shaft diameter before ordering.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this coupler suitable for both CNC3018 and CNC3020 machines?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, this rigid shaft coupler is designed to be compatible with CNC3018, CNC3020, and similar DIY CNC engraving and routing platforms, as well as most desktop 3D printers using standard stepper motors.\u003c\/p\u003e\n\u003ch4\u003eQ: What material is this shaft coupler made from?\u003c\/h4\u003e\n\u003cp\u003eA: This coupler is machined from aluminium alloy, offering an excellent balance of strength, light weight, and corrosion resistance — ideal for precision motion control applications in 3D printers and CNC machines.\u003c\/p\u003e\n\u003ch4\u003eQ: How many pieces are included per order?\u003c\/h4\u003e\n\u003cp\u003eA: Each order includes 1 piece of the D20L25 rigid shaft coupler.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What shaft diameters does the D20L25 rigid shaft coupler support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The D20L25 coupler has an outside diameter of 20mm and a length of 25mm. The bore size is determined by the set-screw clamp design, making it compatible with common stepper and servo motor shaft sizes used in CNC and 3D printer applications. 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