Premium 25Mm Anti Backlash Ball Screw Kit With Sf U2504 Lead Screw, 860Mm Travel, Nema 34 Motor Mount, Bk20 Bf20 End Supports, Flexible Coupler, And Top Shelf Cnc Assembly

High Precision 25MM Anti Backlash Ball Screw Kit
✔️ 25MM SFU2504 Anti Backlash CNC Lead Screw Kit Assembly

This complete single-unit kit builds a handy linear motion system for your DIY router or engraver. You get everything needed to upgrade your machine from slide rails to a smooth running setup. The integrated mounts simplify assembly so you spend less time wrenching and more time cutting.

✅ 25mm diameter rolled GCr15 steel shaft runs quiet and stays cool under load
✅ 4mm pitch delivers fine step control without stick slip during micro feeding
✅ C7 grade accuracy keeps motor shaft, coupler, and screw perfectly aligned for steady cuts
✅ Heavy duty cast steel BK20 and BF20 blocks resist vibration and hold position tight
✅ Custom flex coupler joins the Nema 34 bracket to the shaft with zero wobble

💡 High torque ball screw kit for CNC upgrades?

A quality assembly removes play from your drive train and keeps steps precise.
- Rolled threads handle heavy loads without slipping past programmed positions
- Deep groove bearings in the support blocks take radial stress while turning fast
- Simple monthly wipe down prevents chip dust from grinding into the C7 surface

✝️