2pcs 6mm Linear Motion Rods 500mm Long, Case Hardened Chrome Plated Steel Shafts with h8 Tolerance, Smooth Linear Guide Rails for CNC, 3D Printers, Automation & DIY Machinery

6mm Chrome Plated Linear Motion Rods for CNC and 3D Printer Use
✔️ Smooth Hardened Linear Shaft 500mm Length Pack of 2

These solid linear motion rods are made for smooth guidance in CNC machines, 3D printers, and automation builds that need accurate, stable linear travel. Built from hardened carbon steel with a chrome plated surface, they are a handy choice for precision motion systems and DIY mechanical projects. Pack size includes two matching linear shaft rods.

✅ Pack size: 2 pieces linear motion shaft rods
✅ Rod diameter: 6mm 0.24 inch
✅ Rod length: 500mm 19.69 inch
✅ Material: high quality C45 carbon steel
✅ Case hardened with surface hardness 58 to 64 HRC
✅ Chrome plating thickness 15um to 20um for wear and corrosion resistance
✅ Smooth low friction surface for linear bearings
✅ Metric h8 tolerance for accurate fit and alignment
✅ Chamfered ends for easier bearing installation and safer handling
✅ Suitable for CNC machines, 3D printers, engraving machines, and automation equipment

Dimensions
Rod Diameter 6mm 0.24 inch
Rod Length 500mm 19.69 inch

Technical Details
Surface Hard Depth 0.8mm to 2.5mm
Surface Roughness 0.8S to 1.6S
Straightness below 5um per 100mm
Surface Finish Ra 0.8
Color silver

💡 What makes case hardened chrome plated linear rods ideal for precision linear motion systems?
Case hardened linear rods are designed to deliver long service life and smooth motion under repeated load.

• Hardened steel cores provide strength and resistance to bending in linear guide applications

• Chrome plated surfaces reduce friction and protect against corrosion and wear

• Tight tolerance linear shafts help maintain accuracy in CNC, 3D printers, and automated machinery

These linear rods are a solid option when you want smooth travel, consistent accuracy, and dependable performance for precision motion builds and DIY projects.