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This is the single spiral groove of flexible coupling made by
aluminum. This design utilizes a single piece of material and becomes
flexible by removal of material along a spiral path resulting in a
curved flexible beam of helical shape.

Changes to the lead of the helical beam provide changes to
misalignment capabilities as well as other performance characteristics
such as torque capacity and torsional stiffness. It is even possible
to have multiple starts within the same helix.


* Made from aluminum.
* Compatible with most 4mm shaft especially D shaft.
* Size: D9*4*4*M3*L22mm.


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General information

Manufacturer Makeblock
Product type Robotics accessories
Item number5999938
Manufacturer no.MB-84720

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Warranty & right to return

Warranty 24 month Bring-in

Limited right of return

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Information subject to change.

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Makeblock Flexible coupling 4x4mm Makeblock Flexible coupling 4x4mm