Heavy Duty SFU1204 Ball Screw Kit With Slick Metal Nut CNC Machine Parts 12mm Diameter 4mm Pitch 400mm Length Knockout Low Friction Design For Smooth Axis Travel And Gritty Daily Shop Runs

SFU1204 Ball Screw Kit for Linear Motion CNC Builds
✔️ 12mm diameter, 4mm pitch, 400mm length bearing steel rod

Pack of 1. This heavy duty SFU1204 ball screw kit converts rotational force into smooth linear motion, making it a solid choice for CNC routers, DIY linear actuators, and precision workshop builds.

✅ 12mm (.47 inch) bearing steel shaft with hardened finish
✅ Four millimeter (.16 inch) thread pitch for steady feed rates
✅ Three hundred thirty five millimeter (13.19 inch) effective stroke
✅ Matched sliding metal nut designed to stay assembled tight
✅ Ready to mount with standard BK10 and BF10 support brackets

💡 What makes a ground ball screw better than a basic leadscrew for machine tool upgrades?

Swapping to a precision rolled screw kit gets your axes talking precise again. Watch these upgrades fix common shop headaches.

- Cuts lost motion so your part tolerances stay dead on day one

- Dials back heat buildup so bearings last longer under stress

- Transfers torque straight to the carriage instead of slipping threads

- Fits handy into standard router frames for quick weekend projects

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