2 Pack 12mm X 1000mm Linear Motion Rods Case Hardened Chrome Shaft For 3D Printers And CNC DIY Projects Built For Precision H8 Tolerance With Ultra Smooth Sliding And Rock Solid Straightness

2 Pack 12mm x 1000mm Linear Rods for CNC & 3D Printers
✔️ 2Pcs 12mm x 1000mm, HRC55-62, Ra0.05-0.08, chrome plated 0.01mm

These precision linear motion rods are built from 45# carbon steel with a chrome finish, designed for accurate, smooth movement in CNC machines, 3D printers, and automated equipment.

✅ Material: 45# carbon steel; hardness about HRC55-62; surface roughness Ra0.05-0.08
✅ Diameter tolerance: -0.01 to -0.03 mm; length tolerance ±0.1 mm
✅ Straightness: ≤0.1/1000 mm; chamfered ends C1.0-45°
✅ Chrome plating thickness about 0.01 mm
✅ Pack: 2 pieces (12 mm x 1000 mm)
✅ Wide applications: CNC, 3D printers, automatic machinery, engraving

💡 What is a linear motion rod used for in precision machines? These rods act as the rigid guide shaft to support moving parts and ensure precise, smooth straight-line motion in CNC, 3D printers, and automation systems.
- high stiffness and precise straightness for reliable positioning
- chrome plating reduces wear and corrosion
- compatible with 12mm bore linear guides and bearings

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