Z-Axis Shaft Adapter – 5 mm to 8 mm Motor Coupler

Print this compact adapter in under 3 minutes to bridge your 5 mm motor shaft to any standard 8 mm lead-screw coupler—no extra parts or machining needed. 

• Super-fast print: Optimized for 0.2 mm layers, it completes in ≈3 min
• Tool-free assembly: Just press the adapter onto the 5 mm shaft, slide on your 8 mm coupler, and tighten the grub screw. Done—no adhesives or shims required.
• Low-profile design: Keeps your Z-axis stack-up minimal, ensuring smooth travel and stable prints.