Linear Shaft 8 mm diameter, 400 mm length, OEM model AMS-18919

OEM linear shaft with an 8 mm diameter and 400 mm length designed as a precision cylindrical guide for linear motion systems. The shaft provides a straight, hardened running surface intended for use in linear guides, bearings and mechanical assemblies where consistent diameter and rigidity are required. Its dimensions make it suitable for applications that call for an 8 mm guide rod with a 400 mm functional length.

Advantages

The shaft offers a uniform diameter along its length and a smooth, hardened surface for low-friction interaction with linear bearings and bushings. Its straightness and dimensional consistency reduce play and improve repeatability in linear motion setups. The simple cylindrical form factor facilitates easy mounting and replacement in existing guide rail configurations.

Suitable for

• CNC printers and 3D printer linear axes
• Automation equipment and pick-and-place mechanisms
• Linear guides, plain bearings and pillow blocks
• DIY mechanical projects and small machine fixtures

Key specifications

• Diameter: 8 mm
• Length: 400 mm (usable straight section)
• Shape: cylindrical, straight shaft
• Surface: hardened and ground running surface for bearing contact
• Compatibility: intended for use with 8 mm linear bearings and bushings

How to use

Install the shaft by securing it in the machine frame or mounting blocks so that the running surface is supported over its working length. Pair the shaft with compatible linear bearings, bushings or guide blocks sized for an 8 mm diameter. Ensure bearing preload and alignment are set according to the bearing manufacturer's guidance to avoid binding or excessive wear. When cutting to length, use appropriate metalworking tools and deburr the ends before assembly.

Usage recommendations

Protect the shaft from contamination and corrosive environments; apply light machine oil or corrosion inhibitor on the surface if the application requires intermittent exposure to moisture. Periodically inspect for straightness and surface wear and replace the shaft if scoring or excessive wear compromises bearing performance.