2PCs 8mm x 300mm (.315 x 11.81 inches) Case Hardened Chrome Plated Linear Motion Rod Shaft Guide - Metric h8 Tolerance for CNC axis motion, anti-backlash setup, and smoother linear travel under load, 2-pack replacement made for clean installs and

2Pcs 8Mm 300Mm 315 2-pack built for smooth installs and solid results
✔️ 2PCs 8mm x 300mm (.315 x 11.81 inches) Case Hardened Chrome Plated Linear Motion Rod Shaft Guide - Metric h8

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

✅ The material is carbon steel, which is very suitable for linear motion rod.
✅ The surface has been chrome plated to enhance the hardness.
✅ Chamfer on both ends, easier to install linear bearings and won't hurt fingers when installing it.
✅ Diameter 8mm, tolerance -0.005mm to -0.03mm ( 7.995mm - 7.97mm)
✅ Length 300mm, tolerance ± 0.5mm ( 299.5mm - 300.5mm )

💡 How do you prevent ballscrew whip on long travel CNC machines?
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.