17 mm Gauge Ball Pair, Hardened Chrome Steel, 0.003 mm Accuracy, Diameter Tolerance 0.00008 mm - Metav IndustryLine

Take advantage of extremely tight tolerances and industrial‑grade hardness for stable reference measurements; the 17 mm diameter and 0.003 mm accuracy ensure reproducible results across inspection and gauging tasks. Order the measuring balls directly via Metav Werkzeuge or consult our specialists for application advice and supply logistics.

Measuring Ball Pair M318.427 – 17 mm hardened chrome steel, 0.003 mm accuracy (Metav IndustryLine)

A pair of Measuring Balls M318.427 in hardened chrome steel, designed as matched gauge spheres for precision inspection, reference fixturing and comparative measurement in workshop and quality environments

• Hardened chrome steel, >HRC 62
• 17 mm diameter with 0.003 mm accuracy
• Matched pair for precision gauging

Reproducible precision for inspection and gauging

The paired spheres provide a consistent reference surface with an accuracy of 0.003 mm, making them suitable where repeatability matters in dimensional control. With a diameter of 17 mm and a diameter tolerance of 0.00008 mm, the matched set reduces measurement scatter when used for comparative checks, run‑out tests or as reference points in multi‑axis probing setups. The numerical specification supports reliable statistical process control and helps to shorten inspection cycles by limiting the need for repeated adjustments.

Material selection and wear resistance for industrial use

Manufactured from hardened chrome steel, the spheres combine high surface integrity with a listed hardness above HRC 62, delivering excellent resistance to indentation and wear during regular contact measurements. The very low surface roughness (0.00001) contributes to stable contact characteristics and minimises measurement noise. These material and finishing parameters ensure a long service life as reference elements in gauge assemblies, comparison plates or bespoke fixture systems.

Integration and handling benefits in the metrology workflow

Supplied as a matched pair (set of 2), the spheres are ready for immediate use in calibration benches, gauge blocks and precision fixtures; the set arrangement preserves interchangeability and traceability between measurements. Weighing 0.08 kg for the pair, the components are easy to position manually or integrate into clamping aids without adding significant mass to assemblies. As robust reference spheres, they help to accelerate setup times, reduce rework rates and maintain consistent quality outputs across batch runs—advantages that translate directly into improved production efficiency and lower inspection overhead.

Contact Metav Werkzeuge today for a technical quotation or application consultation on the M318.427 measuring ball pair and to arrange supply directly from our Emmerich centre

Technical data

• Article number: M318.427
• GTIN: 4054469184159
• Manufacturer: Metav IndustryLine
• Category: Lehren

Facts

• Diameter: 17 mm
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness: 0.00001
• Hardness: >HRC 62
• Weight: 0.08 kg
• Pieces per set: 2

Special features

• Material: hardened chrome steel
• Supplied as matched pair
• Intended use: gauging, reference spheres, inspection
• ECLASS: 21170133

FAQ

What applications are these measuring balls suited for?
The measuring ball pair M318.427 is intended for precision gauging, reference points in inspection fixtures and comparative measurement tasks where a stable spherical reference is required.

What accuracy and tolerances can be expected?
The spheres are specified with an accuracy of 0.003 mm and a diameter tolerance of 0.00008 mm, making the M318.427 suitable for high‑precision reference and inspection purposes.

Are the spheres durable for regular contact measurements?
Yes. The M318.427 pair is made from hardened chrome steel with hardness above HRC 62 and a very low surface roughness, providing strong wear resistance for repeated contact measurements.

How are the measuring balls supplied and handled in use?
They are delivered as a matched set of two (pieces per set: 2), enabling direct use in paired gauging arrangements or as matched reference spheres in fixtures

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