uxcell 8mm to 8mm Bore Rigid Coupling Set Screw L25xD14 Aluminum Alloy | Precision Shaft Coupler Connector

• Connection Bore Diameter: 8mm to 8mm; Total Size:25x14mm/0.98''x0.55''(LxD);Thread Diameter: 3mm/0.12".
• Widely used in blowers,3D printer,DIY robots,CNC machine,stepper motors,etc. Similar to rigid clamp couplings, shaft couplers are used to hold bearings and sprockets tightly on the shaft, and are used in motor and gearbox assemblies.
• Top tight type rigid coupling with 2/4 screws to hold the shaft tightly; high torque with rigidity, low inertia and excellent sensitivity.
• 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.

• Prepare Shafts — Ensure both motor shaft and driven shaft (e.g., wheel hub) are clean, free of debris, and precisely aligned. Both shafts must be 8mm in diameter for this coupling.
• Position Coupling — Slide the uxcell rigid coupling onto the motor shaft, aligning the bore with the shaft's end. Then, slide the driven shaft into the other bore of the coupling until it meets the motor shaft end.
• Tighten Set Screws — Using the included wrench, tighten the set screws firmly against both shafts. Ensure the screws are securely seated to prevent any slippage and achieve maximum torque transmission.
• Verify Alignment — Double-check that the shafts remain perfectly co-axial after tightening. Rigid couplings do not tolerate misalignment; re-adjust if any eccentricity is detected to prevent vibration and wear.

Typical situations where uxcell 8mm to 8mm Bore Rigid Coupling Set Screw L25xD14 Aluminum Alloy | Precision Shaft Coupler Connector helps — illustrative scenarios, not customer reviews.