2 mm Ceramic Measurement Ball (Si3N4) Accuracy 0.003 mm, HV1400‑1700 Hardness - Metav IndustryLine

Take advantage of the combination of ceramic durability, sub-micron surface finish and consistent dimensional accuracy to improve measurement repeatability in gauges and probe systems. Order the ceramic measuring ball directly via Metav Werkzeuge or ask our consultants for application-specific advice.

Measuring Ball M318.432 — Ceramic (Si3N4), 2 mm, 0.003 mm accuracy (Metav IndustryLine)

The Measuring Ball M318.432 is a silicon nitride ceramic reference sphere designed for high-precision gauge, probe and calibration applications in dimensional metrology.

• Silicon nitride ceramic Si3N4, ultra-hard
• Diameter 2 mm for compact probe interfaces
• Accuracy 0.003 mm (3 µm) certified
• Surface roughness Ra 0.00001 for consistent contact

Stability that reduces measurement uncertainty

The M318.432 provides consistent dimensional performance thanks to the inherent properties of silicon nitride. With a stated accuracy of 0.003 mm and a diameter tolerance of 0.00008 mm, the sphere serves as a reliable reference for repeat checks and verification cycles. The exceptionally low surface roughness (Ra 0.00001) reduces local surface variability and improves tactile probe consistency, which in turn minimises rework and supports tighter process control. These measurable properties translate directly into more predictable inspection outcomes and traceable quality records.

Long service life and resistance under load

Constructed from high-grade ceramic, the sphere offers a hardness rating of HV1400-1700, delivering excellent wear resistance against repeated probe contact. The compact 2 mm diameter and modest mass (0.08 kg) make it suitable for delicate probe heads and compact gauge fixtures while maintaining sufficient inertia for stable probing. Ceramic chemistry gives superior corrosion and thermal stability compared with typical steel spheres, which reduces dimensional drift over routine temperature fluctuations and extends the interval between replacements — a clear operational saving for continuous inspection environments.

Simple integration into metrology workflows

Designed to work with tactile probe systems, calibration stands and gauge assemblies, the sphere is optimised for tight-space installations where a small reference element is required. Its geometry and finish improve repeatability in CMMs and manual gauge checks, enabling straightforward substitution into existing fixtures or probe tips. Where traceability is required, the SKU and GTIN provide easy inventory tracking; for specification matching or system compatibility, Metav’s technical advisors can assist with integration suggestions and fixture recommendations to ensure the sphere meets the required inspection protocol.

For precision applications relying on ceramic durability and sub-micron surface finish, choose Metav IndustryLine’s Measuring Ball M318.432 and contact Metav Werkzeuge for expert advice and reliable supply from Emmerich.

Technical Data

• Article number: M318.432
• GTIN: 4054469184326
• Brand: Metav IndustryLine
• Material: Ceramic (Si3N4)
• Weight: 0.08 kg
• Hardness: HV1400-1700
• Surface roughness Ra: 0.00001

Facts

• Diameter: 2 mm
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Mass: 0.08 kg

Special features

• Application: Gauges, probe references, calibration
• Ultra-low surface roughness for repeatable contact
• High wear and corrosion resistance
• Compact size for tight probe interfaces

FAQ

What is the nominal diameter and its tolerance?
The nominal diameter is 2 mm with a diameter tolerance of 0.00008 mm for the Measuring Ball M318.432.

How precise is the sphere for reference measurements?
The sphere is specified with an accuracy of 0.003 mm (3 µm), making the M318.432 suitable for high-precision gauge and probe checks.

Is the surface finish suitable for tactile probing?
Yes. The surface roughness is Ra 0.00001, which supports consistent tactile contact and improves repeatability for probing operations using the M318.432.

What materials and mechanical properties does the sphere offer?
Made from silicon nitride ceramic (Si3N4), the sphere exhibits high hardness (HV1400-1700) and excellent wear and thermal stability for prolonged service.

Can the sphere be used on CMMs and manual gauges?
Yes. The compact geometry and finish of the M318.432 make it compatible with CMM probe tips and manual gauge fixtures for reference and calibration tasks.

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