Linear Motion Rods, 20mm x 1200mm, 2-Pack

Linear motion rod shafts deliver smooth, repeatable travel for CNC and automation builds, helping reduce wobble, binding, and premature wear. This 2-piece set features Ø20 mm x 1200 mm hardened carbon steel rods with a fine-ground surface for stable guidance under load. An electroplated anti-rust layer supports long service life in workshops and damp spaces, while the precision straightness keeps motion consistent across cutting, grinding, milling, and drilling setups.

• Includes 2 precision shafts to build or replace linear guide rails on CNC, mills, lathes, and automation rigs


• Delivers smooth, quiet movement with fine-ground 0.1–0.22 μm surface finish to reduce drag and chatter


• Resists bending under load with hardened carbon steel rated HRC58–66 for stable, accurate travel


• Protects against rust with ≥10 μm electroplated coating for basements, garages, and humid workshops


• Fits broad applications from DIY CNC and laser equipment to robotic arms and wire drawing machinery

Upgrade worn guide shafts or start a new linear rail build with a matched pair designed for precision motion control. The consistent diameter, high hardness, and ground finish help keep bearings tracking smoothly over long runs—ideal when repeatability matters. Suitable for common machining and automation tools where alignment and surface quality affect results. Grab yours today and keep your next build running straighter, smoother, and longer.

• Quantity: 2 pcs


• Rod diameter: Ø20 mm (0.79 in)


• Rod length: 1200 mm (47.24 in)


• Shaft type: SFC20


• Material: High carbon steel & aluminum


• Hardness: HRC58–66


• Surface finish: 0.1–0.22 μm


• Straightness: 5 mΩ/100 mm


• Electroplated layer thickness: ≥10 μm