2Pcs 12mm x 300mm Linear Rail Rod Shafts, case hardened chrome plated C45 carbon steel linear motion guides with smooth bearing support, accurate diameter and length tolerance for CNC, 3D printers and automated machinery

2Pcs 12mm x 300mm Chrome Linear Rail Rod Shaft for Motion Systems
✔️ Case Hardened Linear Shaft Guide for 3D Printers and CNC

This is a set of case hardened linear rail rod shafts built for smooth, accurate motion in compact mechanical systems. These rods are commonly used in 3D printers, CNC machines, engraving equipment, and automated assemblies where straight travel and consistent bearing contact are required. Pack size is 2 pieces.

✅ Pack size: 2 pieces
✅ Shaft diameter: 12 mm
✅ Shaft length: 300 mm
✅ Diameter tolerance: ±0.5 mm
✅ Material: C45 carbon steel
✅ Surface finish: chromium plated for improved wear resistance
✅ Case hardened outer layer for longer operating life
✅ Designed for linear bearing and guided motion use
✅ Commonly used in CNC, 3D printers, automation, and molding equipment

Dimensions
Diameter 12 mm
Length 300 mm

💡 Why are case hardened chrome linear shafts used in linear bearing motion systems?
Case hardened chrome linear shafts are designed to keep motion smooth and repeatable under continuous sliding contact.

• Hardened surface helps reduce wear from linear bearings and bushings

• Chrome plating improves surface smoothness and corrosion resistance

• Maintains straightness and alignment through repeated motion cycles

• Ideal for precision linear guides in CNC machines and automated equipment

A handy choice when you need dependable linear shafting that delivers smooth travel, solid bearing support, and consistent performance in precision motion setups.