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Four screw design, set screw type, beam coupling.Zero backlash.
Top Thread Size: M4
5 x 5mm to 8mm Shaft coupling
1 x Hexagon Wrenches ScrewsNecessary DIY 3D Printer Prusa i3 Accessories. How to use, pls follow the steps: Step 1 – press the nuts to the slots on both sides of the idler
Step 2 – Insert both bearings in the pulley,Be aware that bearings can slip out during assembly.(Layers might be visible in this printed part due to the geometry .The functionality and strength remain unaffected)
Step 3-Ensure both bearings are inside the pulley! Insert the pulley in idler as shown in the picture.
Slide the shaft through the idler and pulley.Use reasonable force or you will BREAK the printed part.
Place your finger on the bearing and ensure it can rotate freely.