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

Take advantage of the combination of silicon nitride (Si3N4) construction, 0.003 mm measurement accuracy and an extremely tight diameter tolerance to secure reproducible reference points in precision gauging. Order the gauge ball directly via Metav Werkzeuge or consult the technical team at our Emmerich quality hub for specification matching.

Ceramic gauge ball M318.432 — Si3N4, 2 mm, 0.003 mm accuracy (Metav IndustryLine)

A ceramic gauge ball M318.432 designed as a stable, wear‑resistant reference element for precision gauges, laboratory fixtures and calibration equipment.

• Silicon nitride ceramic Si3N4, HV1400–1700
• Diameter tolerance ±0.00008 mm
• Measurement accuracy 0.003 mm
• Surface roughness Ra 0.00001

Improved measurement reliability through material and tolerance

The use of Si3N4 ceramic delivers a reference sphere with exceptionally low thermal expansion and high hardness, which preserves geometry under repeated contact. With a nominal diameter of 2 mm and a verified accuracy of 0.003 mm, this sphere provides a stable datum for comparative checks and gauge calibration. The combination of tight diameter tolerance and minimal surface roughness reduces uncertainty when used as a contact element in comparative or kinematic gauging setups, supporting more consistent measurement results and fewer re‑checks.

Durability and surface integrity that lower lifecycle costs

High hardness (rated HV1400–1700) and an ultra‑fine surface finish (Ra 0.00001) mean the reference surface resists wear and maintains sphericity over prolonged use. This durability translates into lower replacement frequency and predictable performance in routine calibration cycles. For inspection labs and production lines where repeatability matters, the ceramic composition offers corrosion resistance and dimensional stability that steel spheres cannot match at comparable sizes.

Practical integration and handling for metrology workflows

Compact and lightweight, the sphere fits into standard gauge sockets, kinematic mounts and probe tips used in small‑format gaging rigs. The precise geometric specification simplifies fixturing and minimises set‑up time when transferring references between test benches. The sphere is traceable via its SKU and GTIN, enabling clear documentation in inventory and quality records and supporting consistent process control across multiple workstations.

For procurement or application advice on this Si3N4 gauge ball, contact Metav Werkzeuge at our Emmerich quality hub to discuss compatibility with existing gauges and calibration routines.

Technical data

• Article number: M318.432
• GTIN: 4054469184326
• Label: Messkugel aus Keramik (SI3N4), 2 mm Genauigkeit 0,003 mm

Core measurements

• Diameter: 2 mm
• Measurement accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness Ra: 0.00001
• Hardness: HV1400–1700
• Weight: 0.08 kg

Special features

• Material: Ceramic (Si3N4)
• High wear resistance and low thermal expansion
• Application: Gauges and precision metrology
• Suitable as a reference element for small‑format fixtures

FAQ

What is the nominal diameter and its accuracy?
The ceramic gauge ball M318.432 has a nominal diameter of 2 mm with a specified measurement accuracy of 0.003 mm.

Which material is used and what are the benefits?
Made from silicon nitride (Si3N4), the sphere offers high hardness, low thermal expansion and excellent wear resistance compared with standard steel reference balls.

How tight is the diameter tolerance and why does it matter?
The diameter tolerance is ±0.00008 mm, ensuring superior sphericity for repeatable contact points and reduced measurement uncertainty in precision gauging.

Can this gauge ball be used in kinematic mounts and probe tips?
Yes, the M318.432 is compact and compatible with standard small‑format kinematic mounts and probe interfaces used in gauge assemblies.

Is the surface finish suitable for high‑precision applications?
The sphere’s surface roughness (Ra 0.00001) supports stable contact conditions and helps maintain consistent readings across repeated measurements.

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