25x250 mm Runout Test Arbor MK3, 0.005 mm Runout Accuracy, Hardened Gauge Steel, DIN 229 - Metav IndustryLine

Take advantage of the combination of 0.005 mm runout accuracy, hardened gauge steel construction and the standardised MK3 taper for consistent spindle alignment and reliable inspection results. Order the mandrel directly via Metav Werkzeuge or consult the specialists for application advice.

Test Mandrel MK3, Ø25×250 mm — 0.005 mm runout accuracy (Metav IndustryLine)

The Test Mandrel MK3, Ø25×250 mm is a hardened gauging tool for runout checking and aligning machine spindles with an MK taper, designed for workshop and production use.

• Hardened gauge steel construction
• 0.005 mm runout accuracy
• MK3 Morse taper centre
• Compliant with DIN 229

Precise runout verification that stabilises production quality

The mandrel delivers repeatable radial precision thanks to its 0.005 mm specification, which translates into measurable reductions in scrap and rework when used for spindle checks and fixture validation. As a test mandrel manufactured from hardened gauge steel, it resists wear during repetitive engagement and preserves the measuring datum over time. The specified runout tolerance is suited to demanding inspection tasks where small radial deviations affect part performance; explained in practical terms, this level of accuracy supports tight concentricity checks and ensures component assemblies meet functional requirements.

Designed for straightforward spindle alignment and handling

With a working dimension of Ø25×250 mm and an overall length of 355 mm, the mandrel offers sufficient reach while remaining easy to position in common machine setups. The MK3 Morse taper provides a widely used interface for spindle testing and compatibility with many lathe and grinding spindles. The combination of compact working length and a weight of 2.5 kg gives the tool a stable feel without becoming cumbersome during manual handling. Materials and geometry follow standard practice, with conformity to DIN 229 ensuring predictable mechanical fit and interchangeability across standard tapers.

Practical benefits: efficiency, traceability and workshop confidence

Used as a dedicated runout reference, the mandrel shortens inspection cycles and helps standardise alignment procedures across shifts. Its robust construction reduces the need for frequent replacements, improving uptime and lowering total cost of ownership in production and maintenance environments. Supported by Metav IndustryLine's distribution and quality oversight from Emmerich, the product comes with clear identification (SKU M318.933, GTIN 4054469183923) so procurement and inventory handling remain straightforward. For process planners, the mandrel is a pragmatic tool to anchor quality plans and to demonstrate compliance with internal tolerancing rules.

Discuss application requirements with Metav Werkzeuge's specialists in Emmerich and arrange procurement or tailored advice to integrate the Test Mandrel MK3 into existing inspection routines

Technical data

• Article number: M318.933
• GTIN: 4054469183923
• Type: MK3
• Material: gauge steel, hardened
• Standard: DIN 229
• Label: Prüfdorn MK3, 25x250 mm Rundlaufgenauigkeit 0,005 mm

Facts

• Runout accuracy: 0.005 mm
• Diameter: 25 mm
• Working length: 250 mm
• Overall length: 355 mm
• Weight: 2.5 kg

Special features

• Hardened gauge steel construction
• MK3 Morse taper interface
• Intended for runout testing and spindle alignment
• Suitable for workshop and production environments

FAQ

What level of runout can be expected from the mandrel?
The mandrel is specified with a 0.005 mm runout accuracy; the Test Mandrel MK3 meets this tolerance when used under standard mounting conditions and with appropriate fixturing.

Which spindles is the mandrel compatible with?
The MK3 taper is a common Morse taper size, so the mandrel is suitable for spindles and fixtures designed for MK3 interfaces and for tasks requiring stable spindle seating.

What material is the mandrel made from and why does that matter?
Manufactured from hardened gauge steel, the mandrel offers wear resistance and dimensional stability, reducing drift in the reference surface during repeated use.

Is the mandrel compliant with any standards?
Yes, the mandrel's design and taper conform to DIN 229, ensuring mechanical compatibility with standardised Morse taper fittings.

Can the mandrel be used for alignment as well as runout checks?
Yes, the Test Mandrel MK3 is intended for both runout testing and spindle alignment, providing a stable cylindrical reference for setup and verification tasks.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com