The CMU Hex Shaft Coupling 18mm x 6mm is a compact and durable mechanical connector designed to securely couple a 6mm DC gear motor shaft to a wheel, hub, or other rotating mechanical component. Precision-machined from solid brass, this coupling provides excellent strength, wear resistance, and corrosion resistance, making it well suited for robotics, hobby electronics, DIY motion systems, and educational projects.
With an internal diameter of 6mm and a total length of 18mm, the coupling is optimized for common DC gear motors used in small robots, smart vehicles, line-following robots, and automation prototypes. The hex-style shaft interface ensures improved torque transfer and reduced slippage compared to round shaft couplings, especially under load or during frequent direction changes.
The coupling is secured using set screws (M3×6 and M4×8, one of each included), allowing for a firm and adjustable grip on the motor shaft and wheel hub. This design ensures stable power transmission while still allowing easy installation, removal, or repositioning during prototyping or maintenance.
Thanks to its solid brass construction, the coupling maintains dimensional stability and smooth rotation, helping to minimize vibration and misalignment in small drive systems. It is ideal for applications where reliability, compact size, and efficient mechanical coupling are required.
Whether you are building a small robotic platform, upgrading a motor-driven wheel system, or working on a DIY mechanical project, the CMU Hex Shaft Coupling offers a dependable and easy-to-use solution for connecting motors to driven components.
Key Features:
- Designed to connect 6mm DC gear motor shafts to wheels or hubs
- Hex-style coupling for improved torque transfer and reduced slippage
- Precision-machined brass construction for durability and corrosion resistance
- Compact size ideal for robotics and DIY motion systems
- Secure fastening with included set screws
- Easy to install, remove, and adjust
Specifications:
- Part Number: CMU HEX SHAFT COUPLING 18MMX6MM
- Material: Brass
- Inside Diameter (ID): 6mm
- Total Length: 18mm
- Weight: Approx. 36g
- Screws Included: M3×6 and M4×8 (one of each)
- Application: DC gear motor to wheel or hub coupling
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What's in the box
1 x Brass Shaft Coupling
2 x Set Screws (M3×6 and M4×8)
