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Description: These linkages use 6-32 screw rod (not included) to create custom arms for just about any application. They have a ¼" free-moving ball (with a 0.14" diameter bore) in the end for smooth movement and easy connectivity. They are sold in packs of 12 and come with cup washers as well.

Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected together. The wide range of components makes building complex electromechanical prototypes or finished projects a reality.


  • 12x linkages
  • 12x cup washers


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Customer Comments

  • You can get threaded rod from just about any hardware store. I buy them in 3' lengths which allows me to make any length linkage I want.

  • no rod included!? and where could I buy them?

  • Do you carry any threaded rod to go with it?

    • That’s a great question. I’d like to know that too. It seems the actobotics product line may be incomplete. For example, I’ve been browsing for hours and don’t see any set screws for sale. Also, I don’t see any toothed timing belts. Plus, where are the linear bearings?

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