Shaft Coupler Rigid Copper Coupling

High-quality rigid copper shaft coupler designed for precise power transmission and shaft alignment in motors, encoders, CNC machines, and robotic applications. These precision-machined couplers provide zero-backlash connections between shafts of equal or different diameters, ensuring accurate torque transfer and rotational synchronization. The copper construction offers excellent electrical conductivity, making them suitable for applications requiring electrical continuity between connected shafts or grounding purposes.

Available in three bore configurations to accommodate various shaft diameter combinations: 5mm to 6mm (adapter coupling), 6mm to 6mm (equal bore), and 4mm to 6mm (adapter coupling). Each coupling features dual set screws on both ends to securely lock shafts in place, preventing slippage under load. The rigid design maintains precise angular alignment with minimal flexibility, ideal for applications demanding accurate positioning. Perfect for connecting stepper motors to lead screws, DC motors to drive shafts, encoders to motor shafts, and other mechanical power transmission applications in DIY projects and industrial equipment.

Specifications:

• Product Type: Rigid Shaft Coupler
• Material: Copper (brass alloy)
• Coupling Style: Rigid (zero-backlash)
• Available Bore Configurations:
  • 4mm to 6mm (adapter/stepped bore)
  • 5mm to 6mm (adapter/stepped bore)
  • 6mm to 6mm (equal bore/straight)
• Outer Diameter: 12-14mm (typical)
• Overall Length: 18-25mm (typical, varies by size)
• Set Screw Type: M3 hex socket grub screws
• Number of Set Screws: 2 per side (4 total) or 1 per side (2 total)
• Set Screw Material: Steel (hardened)
• Torque Capacity: 0.5-2 N⋅m (depending on shaft material and size)
• Maximum RPM: 5000+ RPM (depends on balance quality)
• Misalignment Tolerance: Minimal (rigid coupling requires precise alignment)
• Surface Finish: Natural copper/brass finish
• Electrical Conductivity: Excellent (copper material)
• Temperature Range: -40°C to +200°C
• Applications: Stepper motors, DC motors, encoders, CNC machines, 3D printers, robotics, shaft extensions