This is a flexible helical shaft coupler, a precision hardware component used to connect two rotating shafts (like a motor and a lead screw).
Key Features
- Vibration Damping: The spiral “helical” cut allows the coupler to act as a spring, absorbing vibrations and reducing mechanical noise.
- Misalignment Correction: It compensates for slight angular and parallel offsets between shafts, preventing damage to motor bearings.
- Zero Backlash: Its one-piece aluminum construction ensures accurate motion transmission with no “play” or lost motion.
- Lightweight & Durable: Made from high-grade aluminum, it is corrosion-resistant and maintenance-free.
Common Uses
- 3D Printers: Most commonly used on the Z-axis to connect stepper motors to lead screws.
- CNC Machines: Used for connecting encoders and motors to driving shafts.
- Robotics: General-purpose motion transfer in DIY electronics projects.
Standard Dimensions: Typically 19mm in diameter and 25mm long (D19L25), with common bore sizes like 5mm x 5mm or 5mm x 8mm.
Would you like to know which bore size you need for a specific motor?
