Ohamtes 4Pcs shaft diameter 7mm to 8mm rigid coupling, suitable for 3D printers, DIY encoders, motor connectors, motor guide shaft couplers, model shafts, motor guides, CNC machine tools

• Material: high-quality aluminum alloy material, surface colorful oxidation processing, corrosion resistance; surface color: blue; suitable temperature range: -80℃~+300℃.
• Specifications: Shaft hole size: 7-8mm; Locking screw: M4; Outer diameter: 14mm; Length: 25mm.
• Packing: 4 rigid couplings (including locking screws); 1 free hexagonal locking wrench is included.
• Performance: Transmission efficiency: 99.86%; large load torque, low noise and wear.
• Scope of application: 3D printers, motor drive systems, DIY encoders, stepping motors, lifting platforms, screw drives, CNC machine tools, etc.

Specifications: Shaft diameter: 7-8mm Outer diameter: 14mm Total length: 25mm Color: blue Quantity: 4 pieces Function: 1 .Simple structure, convenient assembly and disassembly, without lubrication; 2. With low noise and low wear, it can accurately transmit speed without slipping, and can be used for precision machinery transmission. 3. Suitable for DIY encoder spindle drive, 3D printer, servo motor system, mechanical platform or gear box drive connection, etc.; 4. The transmission efficiency is as high as 99.86%. Especially suitable for high torque, low speed, low impact transmission. 5. It can work in a temperature range of -80°C to +300°C and harsh environments. 6. The rigid coupling does not have radial, axial and angle correction capabilities, so the centering accuracy of the two connected shafts must be guaranteed.