The Ultimaker Trapezoidal Lead Nut is the original Z-axis drive nut used in Ultimaker 3D printers. It engages with the Z-axis leadscrew to convert motor rotation into precise vertical movement of the build platform or print head carriage. As a component that moves continuously during every print, the lead nut experiences wear over time, which can result in Z-axis backlash, inconsistent layer heights and degraded surface quality.

Replacing the worn lead nut with this genuine Ultimaker part restores the correct mechanical engagement between the leadscrew and nut, eliminating backlash and restoring accurate, repeatable Z-axis positioning. This is a recommended maintenance item for printers that have accumulated significant print hours.

Key features

• OEM Ultimaker trapezoidal lead nut for precise Z-axis leadscrew engagement.
• Restores accurate vertical positioning and eliminates Z-axis backlash caused by nut wear.
• Correct thread form and material for reliable, low-friction operation with the Ultimaker leadscrew.
• Prevents inconsistent layer heights and Z-axis artefacts in printed parts.
• Recommended replacement as part of preventive maintenance after extended print hours.

Compatible with: Ultimaker 2 series, Ultimaker 3 series (verify with service documentation)