Ø50mm CF53 Induction Hardened Linear Bearing Shaft – KM-W-50

Heavy-duty precision shaft for large industrial linear motion systems

The KM-W-50, 50mm linear bearing shaft from Kiwi Motion is engineered for use in the most demanding industrial environments where strength, accuracy, and reliability are essential.

With a substantial 50 mm diameter, this shaft delivers exceptional load-bearing capacity and resistance to deflection, making it the ideal choice for heavy-duty linear motion in large-scale machinery.

Manufactured from CF53 steel, the KM-W-50 shaft offers a proven combination of high core strength and surface durability.

Each shaft undergoes induction hardening to provide a wear-resistant outer layer capable of withstanding continuous cycling under significant mechanical loads.

The shaft is precision ground to an h6 tolerance, with roundness held within 7 µm and straightness maintained within 0.15 mm per metre.

These precision tolerances ensure smooth, accurate linear motion even across extended distances and under challenging operational conditions.

Applications for the 50mm linear bearing shaft

The 50mm KM-W-50 shaft is particularly well suited to large industrial automation systems and structural linear motion platforms. Its high rigidity and wear resistance make it the preferred choice for applications such as:

• Large machine beds and CNC platforms requiring long-span precision guidance
• Heavy-duty linear transfer and positioning systems
• Structural linear motion systems in automated factories
• Oversized actuators for industrial robotics or heavy machinery
• Gantry-based assembly and inspection equipment

Thanks to its superior straightness and rigidity, the 50mm linear bearing shaft handles wide spans and heavy-duty actuation with minimal deflection.

The hardened surface maintains long-term precision, even with continuous use under load.

Custom Lengths and End Machining Options

Each 50mm linear bearing shaft is cut to your exact required length, with a precision tolerance of ±0.1 mm.

This allows easy integration into bespoke industrial builds or OEM equipment without additional machining.

In addition to cut-to-length supply, Kiwi Motion offers a custom end-machining service upon request.

We can machine features such as chamfers, threads, tapped holes, or flats to meet your specific design requirements, helping to streamline your production process and minimise assembly time.

Compatible with Kiwi Motion’s Bearings and Shaft Supports

The 50mm linear bearing shaft is fully compatible with Kiwi Motion’s 50mm linear bearings.

This ensures precision assembly, ease of installation, and long-term operational stability in high-performance linear motion systems.

For large industrial applications that require maximum strength, precision guidance, and durability, the KM-W-50 shaft delivers trusted performance and value.