【Important – Precision Alignment Required】 – This is a rigid coupling. Requires perfect shaft alignment (eccentricity <0.05mm) for proper operation. For applications with vibration or unavoidable misalignment, use a flexible coupling instead.
【Secure 4-Screw Locking Mechanism】 – Features a top-tight design with 4 set screws (90° distribution) gripping the 5mm shaft firmly without slipping. The integrated fastening system eliminates detachment risk during high-speed rotation – stable connection for CNC machines and stepper motors.
【Durable & Heat-Resistant Build】 – Crafted from anodized aluminum in a professional blue finish – resistant to corrosion, oil, and heat. Ensures long service life even in continuous operation, reducing maintenance frequency for your automated equipment.
【Complete Installation Kit】 – Includes 6 couplers + matching hex wrench + pre-installed screws. No extra tools needed – simply slide onto the shaft and tighten. Note: Ensure shafts are perfectly aligned before tightening to prevent bearing damage.
【Wide Application Range】 – Suitable for connecting NEMA 17 stepper motors to lead screws, 3D printers, CNC machines, encoders, DIY robots, and RC projects requiring precise torque transmission and alignment. (For vibration-prone applications, we recommend flexible couplings.)
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