CNC 1204 Ball Screw 650mm with SFU1204 Anti-Backlash Nut
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Prices updated: 13 Oct 2026
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About this product
A 12 mm diameter ball screw with 4 mm pitch and 650 mm length, fitted with an SFU1204 anti-backlash ball nut and machined ends. It converts rotary motion from a stepper or servo motor into linear motion for axes in CNC machines and 3D printers. The anti-backlash nut reduces play in the drive for more precise positioning.
Specifications
- Diameter
- 12mm
- Pitch
- 4mm
- Length
- 650mm
- Nut model
- SFU1204
- Nut type
- Anti-backlash
Frequently asked questions
What does the 1204 in the name mean?
In ball screw naming, 1204 indicates a 12 mm nominal diameter and a 4 mm lead (pitch), meaning one nut travel of 4 mm per full screw revolution.
Does a ball screw this long need end supports?
Long screws usually need proper end supports and alignment to avoid whipping and misalignment at high speed. The support design depends on your machine's layout and the length you use.
