12 mm Ceramic Ball (Si3N4) 0.003 mm Accuracy, Tolerance Ø0.00008 mm - Metav IndustryLine

Take advantage of the combination of high repeatability, ceramic wear resistance and compact handling for reliable probe and gauge references. Order the reference directly via Metav Werkzeuge or consult the Metav team for application advice.

Ceramic measurement sphere (Si3N4), 12 mm — 0.003 mm accuracy by Metav IndustryLine

The Ceramic measurement sphere (Si3N4), 12 mm serves as a compact, high-precision reference ball for gauging, calibration and probe qualification in industrial inspection and metrology

• Si3N4 ceramic for dimensional stability
• 0.003 mm nominal accuracy
• Tolerance Ø 0.00008 mm
• Hardness HV1400–1700 for wear resistance

Greater measurement certainty from the start

A 0.003 mm accuracy rating and a tolerance Ø 0.00008 mm make this 12 mm sphere a dependable reference for repeatable results on coordinate measuring machines and tactile probes. The specified roughness 0.00001 indicates a finely finished contact surface, reducing scatter in single-point measurements and improving statistical stability in repeated cycles. Where traceable comparative checks are required, the compact 12 mm diameter provides a small, well-defined contact area that is easy to position in fixtures and gauge blocks, helping to lower measurement uncertainty in routine inspection tasks.

Durable ceramic construction for long service life

Made from silicon nitride (Si3N4), the ball combines low density with exceptional surface hardness. The hardness HV1400–1700 ensures strong resistance to abrasion and wear during repeated probing or tactile contact, which preserves geometry and extends service intervals. The material choice also offers stability under normal workshop conditions; the inherent resistance to corrosion and wear supports consistent behaviour over time, which is particularly valuable when reference artefacts are used as baseline standards in production control.

Practical value in gauging and probe calibration

This reference sphere is designed for use in gauging setups, probe qualification and inspection fixtures where a compact, stable datum is required. The Ceramic measurement sphere (Si3N4), 12 mm works well as a contact reference for CMMs, probe checks and comparative measurements against master artefacts. The modest weight 0.08 kg aids handling while the fine surface finish reduces contact artefacts. For workshop environments seeking to maintain throughput without sacrificing accuracy, the sphere offers a balance of robustness and metrological performance that supports efficient quality control workflows.

Secure the Si3N4 12 mm reference ball from Metav Werkzeuge to strengthen probe and gauge reliability — contact Metav Werkzeuge for availability and delivery from Emmerich

Technical data

• Article number: M318.442
• GTIN: 4054469184418
• Brand: Metav IndustryLine

Key measurements

• Diameter: 12 mm
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness: 0.00001
• Weight: 0.08 kg
• Hardness: HV1400–1700

Materials & features

• Material: Silicon nitride (Si3N4) ceramic
• Intended use: Gauging, probe calibration, inspection
• High wear resistance and fine surface finish

FAQ

What does the 0.003 mm accuracy mean in practice?
The 0.003 mm accuracy specifies the nominal deviation expected for the Ceramic measurement sphere (Si3N4), 12 mm; it indicates suitability as a precision reference for routine probe checks and comparative gauging.

Is the sphere suitable for tactile probe calibration on a CMM?
Yes. The 12 mm ceramic reference ball is appropriate for tactile probe qualification and CMM checks due to its defined diameter and stable contact surface.

Can the ceramic ball be used in abrasive environments?
The silicon nitride material and hardness HV1400–1700 provide good resistance to wear, making the sphere robust for regular contact use in inspection routines.

What is the product identifier for ordering or inventory?
The reference is listed as SKU M318.442 with GTIN 4054469184418 for procurement and inventory control.

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