Linear Shaft 8 mm Ø, Length 285 mm — OEM replacement shaft

Linear shaft with an 8 mm diameter and 285 mm overall length, intended as an OEM replacement for linear motion systems. The shaft provides a smooth cylindrical surface for linear bearings, bushings or collars, and is designed to act as a guide or bearing shaft in printers, CNC machines, linear actuators and other automation equipment where accurate straight-line movement is required.

Advantages

This 8 mm Ø, 285 mm long shaft delivers an even bearing surface and consistent diameter along its length to support low-friction sliding and rotation. Its dimensions make it suitable for common linear bearing types and retrofit applications. The part is straightforward to install as a direct replacement and provides a stable guide for repeatable positioning in mechanical systems.

Suitable for

• Guide shaft for linear bearings in 3D printers and desktop CNC machines
• Replacement shaft in linear actuators and positioning stages
• Support shaft for carriage assemblies, sliders and bushings
• Retrofit or repair use in automation equipment requiring an 8 mm guide shaft

Key specifications

• Outer diameter: 8 mm
• Overall length: 285 mm
• Cylindrical smooth surface suitable for linear bearings and plain bushings
• Intended function: guide/bearing shaft for linear motion

How to use

Measure the mounting points and clearances in the existing assembly to confirm compatibility with an 8 mm diameter and 285 mm length replacement shaft. Remove the old shaft according to the machine manufacturer’s maintenance instructions, slide the new shaft into place, and secure bearings, collars or retaining hardware as required. Ensure alignment and parallelism with mating components, and verify smooth movement of the carriage or slider before returning the equipment to service.

Usage recommendations

For reliable operation, keep the shaft clean and periodically apply an appropriate lubricant compatible with the bearings or bushings in use. Inspect for wear, corrosion or scoring and replace the shaft if surface damage affects bearing performance. When installing, avoid forcing the shaft into misaligned housings to prevent premature wear.