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

Take advantage of exceptional dimensional stability and ultra‑low surface roughness to raise measurement reliability in gauges and fixtures; the compact 7 mm diameter and wear‑resistant Si3N4 construction ensure long service life with minimal drift. Order the component directly via Metav Werkzeuge or consult our specialists for application advice and availability.

Ceramic Measuring Ball (Si3N4) 7 mm — 0.003 mm accuracy

A Ceramic Measuring Ball (Si3N4) engineered for high‑precision gauging, calibration and reference use in metrology and inspection environments.

• Si3N4 ceramic, extremely wear-resistant
• Diameter tolerance 0.00008 mm
• Surface roughness Ra 0.00001 mm

Precision that improves inspection reliability

The 0.003 mm accuracy specification together with a diameter tolerance of 0.00008 mm makes this measuring sphere a dependable reference for repeatable inspections. Used as a reference element in gauge blocks, contact probes or as a master sphere in comparative checks, the component provides a stable datum that reduces measurement uncertainty. The compact geometry supports tight fixturing and minimises geometric error propagation when transferred into coordinate measuring machines or manual gauge setups.

Durability and surface integrity for repeatable results

Manufactured from Si3N4 ceramic and rated at HV1400–1700, the sphere offers high hardness and excellent wear resistance, preserving geometry under repeated contacts. The exceptionally low surface roughness Ra 0.00001 mm lowers friction and contact variation, which is especially beneficial for tactile probing and repeatability on low‑force measurements. The modest mass (approx. 0.08 kg) supports stable placement without excessive inertia, helping to maintain probe dynamics and reduce settling‑time influences during automated cycles.

Practical integration into shop and lab workflows

Designed for direct incorporation into gauge sets and inspection routines, the sphere complements standard gauging hardware and reference assemblies. Its small size enables precision work where space is restricted while still delivering metrology‑grade performance for batch inspection, fixture verification and routine calibration tasks. For specification matching and application guidance, Metav Werkzeuge’s technical advisers can clarify compatibility with existing probe systems and recommend handling best practice to preserve the reference surface.

For precision applications, rely on Metav Werkzeuge’s supply chain and technical expertise—contact Metav Werkzeuge in Emmerich to confirm delivery options and integration advice for the Ceramic Measuring Ball (Si3N4)

Technical data

• Article number: M318.437
• GTIN: 4054469184371
• Material: Ceramic (Si3N4)

Core specifications

• Diameter: 7 mm
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Hardness: HV1400–1700
• Weight: 0.08 kg
• Surface roughness Ra: 0.00001 mm

Applications & features

• Category: Gauges / metrology
• Intended use: Reference and calibration tasks
• Ideal for CMM probing and tactile gauges
• Compact geometry for confined fixtures

FAQ

What measurement roles is this ceramic ball suitable for?
The Ceramic Measuring Ball (Si3N4) is suited as a reference sphere for gauge blocks, probe calibration, comparative checks and other precision metrology tasks where 0.003 mm accuracy is required.

Can the sphere be used with coordinate measuring machines (CMM)?
Yes, the measuring sphere’s tight tolerance and low surface roughness make it compatible with CMM probing routines and tactile probe calibration, supporting consistent contact detection.

Does the ball require special cleaning or handling?
Maintain the sphere with lint‑free cloths and an appropriate, non‑aggressive cleaner; avoid abrasive media to preserve the Ra 0.00001 mm finish and minimise wear during handling.

Is the component suitable for long‑term repeated contact in automated systems?
The Si3N4 material and HV1400–1700 hardness provide high wear resistance for repeated probing cycles, helping to sustain dimensional stability over extended use.

How is traceability provided for this part?
The sphere is supplied with a clear article number (M318.437) and GTIN (4054469184371) for inventory control and traceability within inspection records.

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