Aluminum Flex Shaft Coupler - 4mm to 6mm

Aluminum Flex Shaft Coupler - 4mm to 6mm


  • €3,50
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Connect this to that with a set-screw coupler. These couplers are made of machined aluminum and have a spiral cut that makes them slightly flexible so they can be fit to two shafts even if they are not perfectly co-linear and will help reduce binding effects. The way they're cut, they're a little springy in the X Y & Z linear axis but not in the rotational axis. That means that you won't get increased backlash - so they're suitable for precision CNC work.

This coupler will connect a 4mm diameter shaft to a 6mm diameter shaft. A perfect add on for the Makeblock motors and shafts. Comes with two sets of double set-screws (two per side) for secure attachment. You'll need a 2mm allen wrench to tighten/loosen the set-screws.


  • Outer Diameter: 19mm
  • Inner Diameter (wide side): 6mm
  • Inner Diameter (small side): 4mm
  • 15 grams

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