Dual Z Axis Ball Screw SFU1204 Upgrade Kit For Ender 3 Pro, Ender 3 V2, Ender 3 Neo 3D Printer With CNC Machining Metal Accessories For Improved Stability And Reduced Z Axis Wobble For Cleaner More Precise Prints

Dual SFU1204 Ball Screw Upgrade Kit for Ender 3 Pro & V2
✔️ 2-piece SFU1204-365mm ball screw kit with ball nut and support

Upgrade kit replacing dual Z motors with a single high precision ball screw drive for Ender 3 Pro, V2, and Neo printers. It delivers smoother motion, quieter operation, and higher Z-axis precision for better layer alignment and print quality.

✅ SFU1204-365mm ball screw length (365 mm / 14.37 in) travel per axis
✅ 12 mm diameter, 4 mm pitch, 4 mm lead (12 mm / 0.47 in dia; pitch 4 mm, lead 4 mm)
✅ Ball nut included with decoupling device and CNC screw seat
✅ Motor support and accessories; compatible with Z-axis rails
✅ Material: screw S55C, nut 20CrMoV; accuracy class C7 (<0.05 mm per 300 mm)
✅ Pulse value note: adjust from 400 to 800 if using original controller; run-in advised
✅ Not compatible with Ender 3 S1; check rail compatibility before install

💡 What is a ball screw upgrade used for in 3D printers?

A handy explanation: it adds precision, lowers noise, and stabilizes Z-axis movement. - Increases Z-axis precision and smooth motion for cleaner layer alignment - Reduces Z-axis wobble and noise compared with belt driven setups - Improves print consistency at higher speeds and taller builds - Requires compatible rails and careful calibration after install