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CAD / Data Sheets

Ø12mm CF53 Induction Hardened Linear Bearing Shaft - Cut To Length

KM-W-12

Features
  • Made from CF53 steel (induction hardened)
  • Precision cut to length (+/- 0.1mm)
  • h6 tolerance
  • Durable surface for extended service life
  • End machining is available upon request
  • Compatible with our linear bearings and supports
(Cut tolerance +/- 0.1mm)

Length required (mm)*
Despatched the same working day if ordered before 12pm

Free shipping available*

For more info, visit our shipping page.

SKU: KM-W-12-CUSTOM
Weight: 0.89 kg
Dimensions: 1000 × 12 × 12 mm
Diameter (mm)12
MaterialCF53 Steel
Tolerance Classh6
Shaft TypeSolid
Min. HRC Surface Hardness60
Straightness max.0.20mm/m
Roundness max.5μm

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Product Details

12mm Diameter Steel Linear Bearing Shaft - CF53 Steel Hardened Ground - KM-W

Ø12mm CF53 Induction Hardened Linear Bearing Shaft- KM-W-12

Precision shaft for low to medium load industrial linear motion

The KM-W-12, 12mm linear bearing shaft from Kiwi Motion is a precision-engineered solution designed to provide stable, repeatable linear motion in a wide range of low to medium load applications.

With a diameter of 12 mm, it offers a balance of stiffness, durability, and accuracy, making it ideal for both industrial and laboratory environments.

Manufactured from high-quality CF53 steel, each KM-W-12 shaft is precision ground and induction hardened to ensure excellent surface hardness and long service life.

The 12mm linear bearing shaft is finished to an h6 tolerance, with roundness controlled within 5 µm and straightness within 0.20 mm per metre.

This high level of precision delivers smooth, low-friction linear motion and consistent performance in both static and dynamic systems.

Applications for 12mm linear bearing shaft

The 12 mm diameter KM-W-12 shaft is particularly well suited to applications requiring moderate rigidity and wear resistance, where a smaller shaft may not provide adequate stability. Typical uses include:

  • Gantry axes in automation and CNC systems
  • Industrial tools and production jigs
  • Robotic arms and pick-and-place systems
  • 3D printers and desktop CNC machines
  • Laboratory automation and inspection equipment
  • Transport mechanisms for materials handling

Its robust construction allows it to maintain alignment and resist deflection under dynamic forces, making it a reliable choice for continuous duty applications.

The hardened surface also resists wear and scoring, helping to preserve long-term accuracy and repeatability.

Custom Lengths for Easy Integration

Each 12mm linear bearing shaft is cut to the customer’s specified length, with a precision tolerance of ±0.1 mm. This enables fast and accurate integration into custom machine builds or retrofit projects, eliminating the need for additional post-processing or adjustment.

Linear Shaft Precision Cutting

Additional end machining is available upon request.

Compatible with Kiwi Motion’s Bearings and Shaft Supports

Designed for seamless compatibility with Kiwi Motion’s full range of linear bearings and shaft supports, the KM-W-12 shaft ensures a perfect fit and minimal installation effort.

This allows engineers to quickly assemble precision linear motion systems that maintain mechanical stability over time.

For industrial linear motion applications requiring moderate rigidity, excellent wear resistance, and reliable performance, the KM-W-12 offers an ideal balance of precision and value.

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Data Sheets / CAD

Technical Specifications

SKU: KM-W-12-CUSTOM
Weight: 0.89 kg
Dimensions: 1000 × 12 × 12 mm
Diameter (mm)12
MaterialCF53 Steel
Tolerance Classh6
Shaft TypeSolid
Min. HRC Surface Hardness60
Straightness max.0.20mm/m
Roundness max.5μm

KM-W-12

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