2PCS Linear Motion Rod, 20 Mm X 1200 Mm (0.79 X 47.24 In), SFC20 Carbon Steel Linear Rod Shaft, Anti Rust And High Precision, High Hardness Shaft, For Cutting Grinding Milling Drilling Machine

2-Piece Linear Motion Rods: This set includes two 20 mm diameter, 1200 mm long linear rail shafts. The high-compatibility design pairs seamlessly with various linear rails and machinery, ensuring smooth and stable motion for industrial applications

Hardened Carbon Steel Shaft: Crafted from carbon steel with a hardness of HRC58–66, the linear guide rail shaft delivers exceptional strength and resists bending under heavy-duty use, maintaining consistent accuracy in automation and mechanical systems

Rust & Corrosion Protection: The linear motion rod shaft surface is coated with a ≥10 μm electroplated layer to resist corrosion and rust, making it suitable for long-term use even in damp environments like basements

High-Precision Linear Motion: Manufactured using a six-step grinding process, the guide rail shaft achieves a 0.1–0.22 μm surface finish and a 5 mΩ straightness, delivering reliable, repeatable travel over time