300mm Runout Test Mandrel SK50 Ø40 Hardened Gauge Steel 0.002mm Runout, DIN ISO 7388-1 - Metav IndustryLine

Take advantage of ultra‑fine runout control and robust construction to keep spindle alignment and inspection reliable; the combination of 0.002 mm runout accuracy, hardened gauge steel and DIN ISO 7388‑1 conformity ensures consistent measurement results. Order the control mandrel via Metav Werkzeuge or consult the technical team for tailored advice.

Control Mandrel SK 50 (SK50‑D40‑300L) – 0.002 mm runout accuracy, hardened gauge steel

The Control Mandrel SK 50 is a precision checking mandrel for runout inspection and alignment of machine spindles with an SK50 taper, designed for demanding workshop and inspection applications.

• 0.002 mm runout accuracy
• Hardened gauge steel, HRC 58
• SK50 taper for spindle alignment
• Compliant with DIN ISO 7388‑1

Reduce rework with micrometre‑grade runout control

The mandrel offers a guaranteed runout accuracy of 0.002 mm, which translates into measurable reductions in rework and setup time when aligning spindles or verifying chuck concentricity. Constructed from hardened gauge steel, the shaft resists wear and preserves datum integrity over repeated use; the specified HRC 58 hardness supports long service life and repeatable contact conditions. For inspection routines that demand repeatability, the low runout figure and documented cylindricity <0.003 mm provide a solid basis for process decisions and traceable quality assurance.

Practical benefits for alignment and inspection workflows

The SK50 taper and a nominal shaft diameter of Ø40 mm give the mandrel direct compatibility with standard SK50 spindle noses and holding fixtures, simplifying insertion and removal during alignment tasks. With a working length of 300 mm, the mandrel balances reach and stiffness to enable accurate checks across typical spindle depths without excessive deflection. The robust mass (approx. 8 kg) contributes to stable seating during measurement, reducing vibration sensitivity and supporting faster, more confident adjustments in the machine tool environment.

Designed for workshop durability and certified form

Engineered to the DIN ISO 7388‑1 standard, the mandrel is produced and finished to the tolerances expected in professional metrology environments. The hardened finish and controlled geometry make the mandrel suitable as a reference shaft for concentricity and runout verification, and the documented features support integration into formal inspection plans. Where traceability and conformity matter, the mandrel’s specifications allow straightforward documentation within existing quality systems.

For reliable spindle alignment and reproducible runout checks, choose the Metav IndustryLine Control Mandrel SK 50 (M318.975) — contact Metav Werkzeuge in Emmerich for technical consultation and ordering at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: M318.975
• GTIN: 4054469184722
• Type: SK50‑D40‑300L
• Label: Control Mandrel SK 50, L = 300 mm, runout accuracy 0.002 mm

Facts

• Runout accuracy: 0.002 mm
• Cylindricity: <0.003 mm
• Length (usable): 300 mm
• Diameter: Ø40 mm
• Weight: 8 kg
• Hardness: HRC 58
• Standard: DIN ISO 7388‑1

Special features

• Material: hardened gauge steel
• Application: runout inspection and spindle alignment with SK50 taper
• Mount: SK50
• Finish: hardened, precision ground

FAQ

What applications is this mandrel intended for?
The mandrel is intended for runout inspection and alignment of machine spindles and chucks; the SK50 taper makes it suitable for SK50‑mount spindles and fixtures, as specified for the Control Mandrel SK 50 (M318.975).

How precise is the runout performance?
Runout performance is specified at 0.002 mm, providing high precision for verification tasks where concentricity and minimal eccentricity are critical.

Is the mandrel suitable for regular workshop use?
Yes. The hardened gauge steel construction and HRC 58 rating mean the mandrel is built for repeated workshop use while maintaining measurement integrity.

Does the mandrel comply with recognised standards?
The product is manufactured to conform with DIN ISO 7388‑1, ensuring its geometry and tolerances meet established industry requirements.

What are the key dimensional data to consider when selecting this mandrel?
Key dimensions are a shaft diameter of Ø40 mm, usable length of 300 mm and SK50 mount; total weight is approximately 8 kg, which aids stable seating during inspection.

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