2Pcs HGR15-400MM Linear Rails kit with 4 Bearing Block,1Pcs SFU1204-400MM Ball Screw with Metal Deflector Ball Screw Nut, BF10/BK10 kit, Nut Housing, Coupling for 3D Printer and CNC Machine for CNC axis motion, anti-backlash setup, and smoother

2Pcs Hgr15 400Mm Linear 2-pack built for smooth installs and solid results
✔️ 2Pcs HGR15-400MM Linear Rails kit with 4 Bearing Block,1Pcs SFU1204-400MM Ball Screw with Metal Deflector

This 2 pack is meant for clean replacement or upgrade work where fit and smooth operation matter.

✅ COMPLETE HGR15 LINEAR RAIL KITS: This linear Guide Rail is of 2 * 400 mm HGR15 rail shafts, 4 blocks ,1 * anti-reverse SFU1204-400 mm ballscrew,1pcs ball nut, 1pcs BF10/BK10, and 1pcs 6.35 x8 mm coupling are included in the package
✅ HIGH-QUALITY STEEL MATERIAL: Linear guides are made of carbon steel, linear bearings made of GCr15 bearing steel, more durable and low nois.Low friction coefficient.high accuracy of the trajectory
✅ HIGH PRECISION: Ball linear guide rail provide a smooth, precision, guiding surface, so that the sliding block can roll more smoothly on it with small starting torsion, it does not appear a sliding motion creeping phenomenon
✅ CONVENIENCE: Steel support rail with pre-drilled holes for easy mounting. Stainless steel Linear optical axis guide bearings linear movement. Easy to install, no need for maintenance.The ballscrew movement without stick-slip effect, less heats up
✅ WIDE APPLICATION:Perfect for your DIY routers, mills, lathes, widely used in the automation machinery and also suitable for automatic equipment, precision measuring equipment, handling machine, and the shipping device.etc

💡 How does screw pitch change feed rate and motor torque on a CNC axis?
Quick answer: match pitch, travel length, and support style to your axis load and speed.
* Pitch controls feed rate and torque demand
* Proper end supports keep alignment tight under load
* Good lubrication cuts heat and wear over time

Built to keep motion smooth and accuracy steady during long production runs.