{"product_id":"6-pcs-5mm-to-5mm-rigid-shaft-coupler-aluminum-alloy-motor-connector-with-4-screw-wrench-locking-for-3d-printer-cnc-size-5mm-to-5mm","title":"6 Pcs 5mm to 5mm Rigid Shaft Coupler – Aluminum Alloy Motor Connector with 4-Screw+ Wrench Locking for 3D Printer \u0026 CNC - size: 5mm to 5mm","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e【Important – Precision Alignment Required】 – This is a rigid coupling. Requires perfect shaft alignment (eccentricity \u0026lt;0.05mm) for proper operation. For applications with vibration or unavoidable misalignment, use a flexible coupling instead. This 5mm coupler is designed for precision applications where shafts are perfectly aligned.\u003c\/li\u003e\n\u003cli\u003e【Secure 4-Screw Locking Mechanism】 – Features a top-tight design with 4 set screws (90° distribution) gripping the 5mm shaft firmly without slipping. This 4-screw locking system eliminates detachment risk during high-speed rotation – a stable CNC motor coupler for stepper motors and CNC machines.\u003c\/li\u003e\n\u003cli\u003e【Durable \u0026amp; Heat-Resistant Build】 – Crafted from anodized aluminum in a professional blue finish – resistant to corrosion, oil, and heat. This aluminum coupling ensures long service life even in continuous operation, reducing maintenance frequency for your automated equipment. The rigid shaft coupler design delivers precise torque transmission.\u003c\/li\u003e\n\u003cli\u003e【Complete Installation Kit】 – Includes 6 couplers + matching hex wrench + pre-installed screws. No extra tools needed – simply slide onto the shaft and tighten. Size: 14mm OD × 25mm length. Note: Ensure shafts are perfectly aligned before tightening to prevent bearing damage. This shaft coupler kit is ready to use out of the box.\u003c\/li\u003e\n\u003cli\u003e【Wide Application Range】 – Suitable for connecting NEMA 17 stepper motors to lead screws, 3D printers, CNC machines, encoders, and DIY robotics requiring precise torque transmission and alignment. This motor coupler is ideal for precision automation projects. (For vibration-prone applications, we recommend flexible couplings.)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Type:\u003c\/strong\u003e Set Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Blue\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Brand: RiseDirectly","offers":[{"title":"Default Title","offer_id":67577003180252,"sku":"B0GS2TVVMF-size-5mm-to-5mm","price":13.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0913\/3020\/files\/411fueOZPWL.jpg?v=1790468563","url":"https:\/\/stemora.us\/products\/6-pcs-5mm-to-5mm-rigid-shaft-coupler-aluminum-alloy-motor-connector-with-4-screw-wrench-locking-for-3d-printer-cnc-size-5mm-to-5mm","provider":"Stemora","version":"1.0","type":"link"}