15mm Ceramic Gauge Ball (Si3N4) 0.003mm Accuracy, HV1400-1700 Hardness - Metav IndustryLine

A compact gauge sphere that combines Si3N4 ceramic construction, a 15 mm diameter and a verified 0.003 mm measurement accuracy delivers a durable, traceable reference for inspection and calibration. Order the item directly via Metav Werkzeuge or contact the consultants for application advice.

Ceramic measuring ball (Si3N4), 15 mm — Precision gauge sphere, 0.003 mm accuracy (Metav IndustryLine)

The ceramic measuring ball (Si3N4) is a high-stability reference sphere designed for precision gauges, inspection fixtures and calibration tasks in quality control environments.

• Si3N4 ceramic for thermal stability
• 0.003 mm measurement accuracy
• 15 mm diameter with 0.00008 mm tolerance

Reliable reference accuracy for everyday inspection

The gauge sphere offers a 0.003 mm nominal accuracy, making it suitable as a reference standard in routine inspection and comparative measurements. Manufactured from Si3N4 ceramic, the sphere combines intrinsic material hardness with dimensional stability, which helps maintain consistent contact geometry under repeated probing. The very low surface roughness (Ra 0.00001) supports repeatable tactile measurements and reduces scatter when used with stylus probes or comparator setups. As a compact reference, this sphere simplifies traceable checks on gauges and fixtures where sub‑0.01 mm performance is expected.

Wear resistance and long-term stability reduce rework

With a hardness in the HV1400–1700 range the sphere withstands typical probe contact and mechanical handling better than many metal alternatives. The tight diameter tolerance (0.00008 mm) preserves interchangeability between reference points and minimises the need for frequent replacement. These material and production attributes provide a predictable wear profile, which translates into lower inspection uncertainty and fewer interruptions for recalibration or component replacement in production monitoring routines.

Practical integration into calibration and inspection workflows

The 15 mm size offers a balance between handling convenience and probe contact area, making the sphere compatible with common gauge blocks, fixture sockets and automated probe heads. Its modest mass (approx. 0.08 kg) aids stable seating in holders while remaining easy to position manually. For metrology teams seeking an economical yet dependable reference, the sphere functions well as a bench standard or as part of a gauge set used for routine acceptance checks. Where traceability is required, the documented measurement capability and the measured surface parameters support integration into a documented quality process.

Confidence from a trusted supply chain

Sourcing this precision component from an established supplier reduces procurement risk. Metav’s positioning as a specialist in accessible precision instruments offers reassurance through consolidated logistic support and product availability for industry and workshops. The combination of measurable performance, material robustness and supplier reliability creates a practical proposition for shops and quality departments that value both repeatability and straightforward inventory management.

Choose Metav IndustryLine gauge spheres for dependable reference performance — contact Metav Werkzeuge for specific application guidance and supply from Emmerich at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: M318.445
• GTIN: 4054469184425
• Material: Keramik (Si3N4)
• Diameter: 15 mm
• Weight: 0.08 kg

Facts

• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Hardness: HV1400–1700
• Surface roughness Ra: 0.00001

Special features

• Intended application: gauges / reference spheres for inspection
• Compact size for bench and fixture use
• High hardness and low surface roughness for wear resistance

FAQ

What accuracy can be expected from this ceramic gauge sphere?
The ceramic measuring ball (Si3N4) M318.445 is specified with an accuracy of 0.003 mm, making it suitable for routine precision checks and comparative measurements in workshop and inspection environments.

What material properties make Si3N4 suitable for reference spheres?
Si3N4 ceramic combines high hardness (HV1400–1700) and excellent dimensional stability; these properties allow the sphere to maintain geometry and resist wear during repeated contact in calibration and inspection tasks.

Is the 15 mm diameter suitable for common probe and fixture setups?
Yes, the 15 mm diameter offers a practical compromise between handling and contact area; the M318.445 is compatible with standard gauge sockets and probe heads used in many metrology fixtures.

How tight is the diameter control on this measuring ball?
The sphere is produced to a diameter tolerance of 0.00008 mm, supporting interchangeability and reproducible contact geometry for accurate comparative checks.

Can this sphere be used as a daily reference in a production environment?
The combination of measured surface roughness (Ra 0.00001), high hardness and compact geometry makes this ceramic sphere well suited for regular inspection cycles and as a bench reference in quality control.

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