CNC-SC-203 5x8mm Blue Aluminum Alloy Rigid Shaft Coupling Bore for CNC, 3D Printer

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US$2.72
CNC-SC-203
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5x8mm Blue Aluminum Alloy Rigid Shaft Coupling Bore for CNC, 3D Printer

This fancy blue coupler is designed to be inserted into any 5mm diameter shaft and 8mm rods or lead screws. Commonly used for coupling the motors to any axis rods/screws for movement. This unit comes with four M3 hex screws for fastening onto the rods and motor shaft. 

Flexible couplers are useful for correcting alignment issues and a little bit of tolerance to move around. In exchange have less backlash for movement. We use flexible for stepper motors for movement with less torque. Rigid couplers are useful for defining a strict no tolerance of re-adjustment and has a greater change of having backlash (can be removed using a anti-backlash coupler). We use rigid couplers for motors that move really fast and have high torque.
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