12mm Gauge Ball Pair Hardened Chrome Steel 0.003mm Accuracy, Diameter Tolerance 0.00008mm - Metav IndustryLine

Precision-engineered 12 mm gauge balls combine exceptional hardness (>HRC 62) and a diameter tolerance of 0.00008 mm to deliver reproducible reference measurements; order the matched pair directly via Metav Werkzeuge or contact our consultants for specification support.

Gauge ball pair M318.422 — 12 mm hardened chrome steel, 0.003 mm accuracy (Metav IndustryLine)

A gauge ball pair M318.422 designed as a high-precision reference for inspection, calibration and fixture‑setup tasks in metrology and quality control.

• Hardened chrome steel, >HRC 62
• Matched gauge pair, 12 mm diameter
• Diameter tolerance 0.00008 mm
• Roundness accuracy 0.003 mm

Confidence for inspection and calibration

These gauge balls serve as a compact, traceable reference for dimensional checks and machine set‑ups. Manufactured from hardened chrome steel, the pair provides stable contact points for repeatable measurements; the matched nature of the set ensures both items share the same nominal diameter and geometry, which reduces systematic error when used as reference artefacts. The specified roundness accuracy and tight diameter tolerance make the pair particularly suitable for comparative tests, reference gauges in fixture alignment, and quick verification routines on the shop floor.

Long‑life material and geometry for minimal wear

The choice of chrome steel hardened to >HRC 62 gives a balance of wear resistance and surface integrity that preserves nominal size under regular use. A fine surface finish and precise machining prevent burrs and local contact deformation, so measurement drift is minimised over time. For applications where durability matters—such as transfer measurements, gauge blocks complements or CMM probing—the robust material and geometry reduce the need for frequent replacement and maintain measurement certainty across many cycles.

Practical benefits for workshop efficiency

As a matched pair supplied together, the item streamlines inspection workflows: two reference points are immediately available for quick comparative traces, concentricity checks or ergonomic fixturing without additional selection or matching. The compact 12 mm diameter supports use in confined fixtures or on small components, while the low mass keeps handling straightforward. By integrating these reference balls into routine checks, downtime from uncertain measurements is reduced and setup times for fixtures and jigs are shortened.

Handling, compatibility and traceability options

The pair is delivered as a set of two precision balls intended for use with gauge stands, V‑blocks, or as datum points for tactile and optical probes. Lightweight and easy to clean, the components respond well to standard metrology care (non‑abrasive solvents, lint‑free cloths). If specific traceability or calibration documentation is required for quality management, Metav Werkzeuge can advise on available certification services to match laboratory or production needs.

For certified reference components and fast supply from Metav Werkzeuge in Emmerich, contact our sales team to specify the matched 12 mm gauge ball pair M318.422 and secure precision that integrates with current inspection routines.

Technical Data

• Article number: M318.422
• GTIN: 4054469184104
• ECLASS: 21170133

Facts

• Diameter: 12 mm
• Roundness accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness: 0.00001
• Weight (set): 0.05 kg
• Hardness: >HRC 62
• Pieces per set: 2

Special features

• Material: hardened chrome steel
• Supplied as matched pair
• Suitable for inspection, fixture set‑up and reference checks
• Fine surface finish for reduced contact wear

FAQ

What material are the gauge balls made from and how hard are they?
The gauge ball pair is made from hardened chrome steel and has a hardness greater than HRC 62, which provides high wear resistance and stable contact properties for repeated measurements.

What level of precision can be expected from this matched pair?
The matched pair offers a roundness accuracy of 0.003 mm and a diameter tolerance of 0.00008 mm, making it suitable as a reliable reference for comparative inspections and fixture alignment.

Is the set delivered as two pieces and how are they packaged?
The product is supplied as a matched set of two gauge balls, intended for immediate use in reference and checking applications; packaging specifics can be provided by Metav Werkzeuge upon request.

Can these gauge balls be used with CMMs and probe systems?
Yes, the geometry and surface finish of the matched pair make them compatible as datum or reference points for tactile probing and many optical verification systems, depending on the probing strategy.

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