Ø30x250 Runout Test Arbor BT30 Three-Point Runout ≤0.003mm, Hardened Gauge Steel JIS 6339/DIN ISO 7388-2 - Metav IndustryLine

Take advantage of repeatable runout below 0.003 mm, a hardened gauge-steel body (HRC 58) and a compact Ø30 x 250 mm design for reliable spindle alignment and quality control. Order the mandrel directly via Metav Werkzeuge or consult the team for application advice.

Testing Mandrel BT30-250 — BT30 test mandrel with <0.003 mm runout, Metav IndustryLine

The Testing Mandrel BT30-250 is a hardened gauge designed for precise runout testing and alignment of machine spindles with a BT30 taper, ideal for workshop and maintenance environments.

• Runout accuracy <0.003 mm
• Hardened gauge steel, HRC 58
• Compatible with BT30 spindle tapers

Consistent accuracy to protect production quality

The mandrel delivers an assured runout of less than 0.003 mm, a level of precision that reduces rework and prevents premature tool wear. For inspection and alignment tasks, this tolerance ensures that measured deviations reflect spindle condition rather than artefacts of the test tool. The Ø30 x 250 mm geometry provides a long enough reference length for meaningful checks while remaining easy to handle, and the 3 kg mass contributes to stable seating in the taper during measurement. This combination translates into repeatable readings and faster fault diagnosis on the shop floor.

Engineered materials and standards for dependable use

Manufactured from hardened gauge steel, the mandrel attains a hardness of HRC 58, giving wear resistance and dimensional stability under repeated use. Compliance with JIS 6339 / DIN ISO 7388-2 underlines the manufacturing and dimensional criteria applied during production. The hardened construction minimises surface deformation during insertion and removal, so the reference surface maintains its geometric integrity over many cycles, supporting long-term traceability in maintenance routines.

Practical integration into inspection workflows

Designed specifically for runout testing and spindle alignment with BT tapers, the mandrel fits directly into standard BT30 spindles and is suitable for routine shop checks as well as pre-acceptance inspections after machine maintenance. The compact profile makes it compatible with bench and on-machine measuring setups. Where higher throughput is required, the stable seating and clear reference length reduce setup time and the need for repeated measurements, improving shop-floor efficiency while preserving measurement confidence.

For application-specific guidance or to secure a BT30-250 test mandrel from Metav IndustryLine, contact Metav Werkzeuge for tailored advice and rapid dispatch from Emmerich

Technical Data

• Article number: M318.943
• GTIN: 4054469183978
• Brand: Metav IndustryLine
• Label: Prüfdorn BT30-250 Rundlaufgenauigkeit 0,003mm

Facts

• Type: BT30-250
• Dimension: Ø30 x 250 mm
• Runout: <0.003 mm
• Weight: 3 kg
• Hardness: HRC 58

Special features

• Material: Gauge steel, hardened
• Standard: JIS 6339 / DIN ISO 7388-2
• Application: Runout testing and spindle alignment for BT30 spindles

FAQ

What tolerance can be expected when using this test mandrel?
The Testing Mandrel BT30-250 from Metav IndustryLine provides a runout tolerance of <0.003 mm, allowing precise assessment of spindle concentricity (SKU M318.943).

Is the mandrel suitable for everyday workshop use on BT30 machines?
Yes. The mandrel is designed for runout testing and alignment of BT30 spindles and its hardened gauge-steel construction (HRC 58) makes it robust for routine inspections.

Which standards does the mandrel conform to?
Manufactured to meet JIS 6339 / DIN ISO 7388-2 dimensional criteria, the BT30-250 mandrel supports standardised inspection procedures and documentation.

How does the mandrel improve spindle alignment procedures?
By providing a stable, hardened reference with a long datum length (Ø30 x 250 mm) and repeatable runout below 0.003 mm, the mandrel lets technicians distinguish true spindle error from test-fixture artefacts.

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