250mm 4080U Aluminum Profile Z-axis Screw Slide Table Linear Actuator for 3D Printer and DIY CNC Router Parts X Y Z Axis

250mm 4080U Z-axis Screw Slide Table Linear Actuator Kit for 3D Printer and DIY CNC Router Parts (Pack: 1 Kit)
✔️ Pack: 1 Kit

The 250mm 4080U Z-axis Screw Slide Table Linear Actuator Kit is a precision linear motion module designed for 3D printers, DIY CNC routers, laser machines, and other compact automation setups. This all-metal screw slide delivers stable travel, high work efficiency, and straightforward mounting in DIY rigs and small machines. The kit includes a flexible coupling and isolation columns to accommodate frame tolerances and ensure smooth operation.

✅ Overall length: 299 mm
✅ Length of aluminum section: 250 mm
✅ Effective stroke: 172.85 mm
✅ Flexible coupling size: D20 L25 8 mm to 6.35 mm
✅ Lead: 8 mm (the lead screw moves 8 mm per turn)
✅ T-type screw length: 290 mm
✅ Weight: 1045 g
✅ Material: high-quality metal; Color: Black
✅ Size details: Overall length 299 mm; Aluminum section length 250 mm
✅ Package contents: 1 pcs 250mm Screw Slide Table Linear Actuator Kit with Flexible coupling D20 L25-8 mm to 6.35 mm; 2 pcs 40 mm aluminum isolation columns; 2 pcs M5x55 mm screws; 3 pcs Allen wrenches
✅ Please note: 0-3 mm tolerance due to manual measurement

Overall length: 299 mm
Length of aluminum section: 250 mm
Effective stroke: 172.85 mm
Lead: 8 mm
T-type screw length: 290 mm
Weight: 1045 g

💡 What are the best practices for installing and tuning the 250mm 4080U Z-axis Screw Slide Table Actuator Kit to ensure precise, repeatable Z-axis motion in a compact DIY CNC router, including alignment, preload, backlash control, coupling selection, and load considerations?

• A precise, well-aligned setup reduces binding and improves repeatability; align the Z-axis with the base rails and verify perpendicularity with a square or dial indicator.
• Use the included flexible coupling to absorb minor misalignment and transmit torque smoothly; ensure it is centered and securely fastened.
• Set appropriate nut preload to minimize backlash without overloading the screw; test travel with typical nozzle or tool weight and check repeatability.
• Maintain rigid frame construction and consider adding isolation columns or bracing to dampen vibrations during rapid Z moves; regular lubrication and inspection of the screw help sustain performance.