Ø40mm CF53 Chrome Plated Induction Hardened Linear Bearing Shaft – KM-WV-40

Ultra-rigid shaft for heavy industrial motion systems in harsh environments

The KM-WV-40, 40mm chrome plated linear bearing shaft from Kiwi Motion is engineered for large-scale linear motion assemblies where exceptional strength, wear resistance, and corrosion protection are required.

With a 40 mm diameter and a high-surface-hardness chrome plated finish, this shaft delivers maximum rigidity and long-term precision in the most demanding operating conditions.

Manufactured from CF53 steel, each KM-WV-40 linear bearing shaft undergoes induction hardening to achieve a surface hardness of at least 62 HRC.

This hardened outer layer provides outstanding wear resistance even under continuous cycling and heavy mechanical loads.

The chrome plated finish protects against corrosion caused by humidity, coolant spray, washdown, or outdoor exposure, helping to maintain system accuracy and component life in environments where uncoated shafts would fail.

Precision ground to an h7 tolerance, with roundness controlled within 11 µm and straightness maintained within 0.15 mm per metre, this 40mm chrome plated linear bearing shaft ensures smooth, low-friction linear motion across long spans.

Applications for 40mm chrome plated linear bearing shaft

The 40 mm KM-WV-40 shaft is ideally suited to ultra-heavy-duty linear motion assemblies operating in corrosive or high-cycle environments. Its exceptional rigidity and wear life make it ideal for:

• Large structural linear transport systems in industrial production
• Heavy-duty CNC gantries and machining platforms
• Automated presses and forming equipment exposed to coolant spray
• Outdoor linear positioning systems and inspection rigs
• High-load food processing and packaging machinery requiring frequent washdown

Thanks to its hardened chrome plated surface and high stiffness, the KM-WV-40 shaft maintains precise alignment and consistent motion under extreme mechanical loads and long duty cycles.

Custom Lengths and End Machining Options

Each 40mm chrome plated linear bearing shaft is cut to your exact specified length, with a precision tolerance of ±0.1 mm.

This enables fast and accurate integration into new machines or retrofit builds.

Kiwi Motion also offers a full custom end machining service. We can supply shafts with chamfers, threads, flats, tapped holes, or other features to suit your assembly requirements, helping reduce machining effort and simplify installation.

Compatible with Kiwi Motion’s Bearings and Shaft Supports

The 40mm chrome plated linear bearing shaft is fully compatible with Kiwi Motion’s heavy-duty linear bearings and shaft supports.

This ensures stable assembly and reliable long-term performance across demanding linear motion applications.

For large industrial motion systems requiring superior rigidity, corrosion resistance, and extended wear life, the KM-WV-40 shaft offers a premium solution.