Ø40x300 Runout Test Mandrel Three-Point Accuracy 0.003mm, Hardened Gauge Steel JIS 6339/DIN ISO 7388-2 - Metav IndustryLine

Take advantage of the combination of industrial-grade runout precision, robust hardened gauge steel construction and compliance with recognised standards to ensure reliable spindle alignment and reduced rework. Order the tool directly via Metav Werkzeuge or consult the specialists for application advice.

BT40-300 runout test mandrel — BT40 mandrel, <0.003 mm runout, Metav IndustryLine

The BT40-300 runout test mandrel is a purpose-made inspection tool for runout testing and alignment of machine spindles with BT40 taper in maintenance and quality-control environments

• <0.003 mm runout accuracy
• Hardened gauge steel construction
• Conforms to JIS 6339 / DIN ISO 7388-2
• For BT40 spindle alignment and testing

Ensure spindle accuracy with measurable runout control

A mandrel with <0.003 mm runout capability provides a quantifiable basis for spindle acceptance and corrective action. By using a dedicated BT40 test mandrel, operators gain a repeatable reference that isolates spindle eccentricity from toolholder variation. The specified tolerance is expressed as perpendicular deviation over the shaft and helps to reduce scrap and secondary operations by detecting misalignment early in the setup process. The Ø40×300 mm geometry balances contact length and accessibility, enabling secure seating in the taper while maintaining a clear datum for measurement.

Robust construction for stable, repeatable measurement

Manufactured from hardened gauge steel, the component offers the stiffness and wear resistance necessary for frequent use in workshops and toolrooms. The material choice and a hardness of HRC 58 increase resistance to surface damage and preserve concentricity over many inspection cycles. Conformity with JIS 6339 and DIN ISO 7388-2 indicates that taper form and mounting interfaces meet common international expectations, so the mandrel presents a reliable datum for comparative checks across different machines and locations.

Practical benefits for maintenance, setup and quality control

Used for runout testing and alignment of machine spindles with BT taper, the mandrel supports maintenance routines and first-article inspections. The mass and profile of the component contribute to measurement stability, helping to minimise vibration during the test and enabling clearer indications from dial indicators or electronic measurement probes. For production environments, the tool shortens diagnostic time, clarifies whether an issue lies in the spindle or the toolholder, and thereby supports efficient corrective measures and reduced downtime.

Choose the Metav IndustryLine BT40-300 runout test mandrel for dependable spindle inspection and contact Metav Werkzeuge in Emmerich for personalised technical guidance and supply coordination

Technical Data

• Article number: M318.944
• GTIN: 4054469183985
• Type: BT40-300
• Dimension: Ø40×300 mm

Facts

• Weight: 4 kg
• Runout accuracy: <0.003 mm
• Diameter: 40 mm
• Length: 300 mm
• Hardness: HRC 58

Special features

• Material: hardened gauge steel
• Conforms to JIS 6339 / DIN ISO 7388-2
• Application: runout testing and alignment of machine spindles with BT taper
• Robust profile for repeatable seating and measurement stability

FAQ

What runout tolerance does this mandrel provide?
The BT40-300 runout test mandrel delivers a runout accuracy of <0.003 mm, allowing fine discrimination of spindle eccentricity during inspection.

Which spindles and holders are compatible?
Compatibility is with machine spindles and toolholders using a BT40 taper; the design follows the relevant taper standards for consistent seating.

What material and hardness are specified for the mandrel?
The mandrel is made from hardened gauge steel and is specified at HRC 58 to ensure wear resistance and preserved concentricity.

Is the mandrel suitable for routine maintenance and quality control?
Yes — the configuration and tolerance of the BT40-300 are intended for workshop maintenance, setup checks and quality inspections where precise runout information is required.

What measurement setups pair well with this mandrel?
The mandrel works with dial indicators, digital runout probes and other spindle test rigs that measure radial deviation; its stable seating improves the clarity of readings.

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