20 mm Ceramic Measurement Sphere (Si3N4) 0.003 mm Accuracy, HV1400-1700 Hardness - Metav IndustryLine

This ceramic gauge ball combines Si3N4 material, a 20 mm diameter and 0.003 mm accuracy to provide a stable reference for calibration and inspection; its high hardness and fine surface finish ensure long-term reproducibility. Order directly via Metav Werkzeuge or consult our specialists for application advice.

Ceramic gauge ball (Si3N4) — 20 mm, 0.003 mm accuracy — Metav IndustryLine

Ceramic gauge ball (Si3N4) is a precision reference sphere for gauges, fixture alignment and calibration tasks in quality control and mechanical inspection.

• Si3N4 ceramic, extreme wear resistance
• Diameter 20 mm with tight diameter tolerance
• Accuracy 0.003 mm for reference measurements

High-precision reference for consistent results

A compact reference sphere made from Si3N4 offers a quantifiable benchmark for repeatable measurements. The combination of 0.003 mm accuracy and a very fine surface finish minimises measurement scatter, making the component ideal for comparative checks, gauge setting and fixture calibration. The consistent geometry of the sphere reduces form-related uncertainty and supports traceable inspection routines, which accelerates decision-making in production and QA processes.

Durable construction lowers long-term costs

Manufactured in silicon nitride (Si3N4) and exhibiting hardness HV1400–1700, the gauge sphere resists wear and maintains its dimensional integrity under frequent contact. The exceptionally low surface roughness contributes to minimal contact deformation and extended service intervals, reducing the need for frequent replacements. In practice, this leads to lower lifecycle costs and fewer interruptions to inspection workflows while preserving measurement confidence.

Versatile in metrology and toolmaking applications

Compact and stable, the sphere suits a wide range of applications from gauge blocks and plug gauges to fixture references and tactile probing. The tight diameter tolerance of 0.00008 mm and proven surface quality make it suitable for both laboratory calibration benches and shop-floor verification routines. The product is easily integrated into existing measurement chains and supports repeatable, comparable results across operators and instruments.

Choose the Metav IndustryLine ceramic gauge ball for reliable calibration performance and contact Metav Werkzeuge in Emmerich for tailored advice or to request delivery and specification support.

Technical data

• SKU: M318.446
• GTIN: 4054469184432
• Material: Ceramic (Si3N4)
• Diameter: 20 mm
• Accuracy: 0.003 mm

Facts

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

Special features

• High wear resistance
• Smooth surface for low contact deformation
• Suited for gauges, fixtures and calibration tasks
• Compact design for easy handling and storage
• Category: Gauges / Measuring devices

FAQ

What is the intended use of this ceramic gauge ball?
The ceramic gauge ball (Si3N4) 20 mm is designed as a precision reference for calibration, fixture alignment and comparative measurements in inspection and metrology workflows.

How durable is the material under repeated use?
Made from silicon nitride with a hardness of HV1400–1700, the sphere offers excellent wear resistance and long service life even under frequent contact.

Can this sphere be used with tactile probes and gauge setups?
Yes, the tight geometry and fine surface finish make the sphere suitable for tactile probing, gauge setting and use as a reference in measuring fixtures.

Is the diameter and accuracy traceable for quality records?
The product specification lists a diameter of 20 mm with an accuracy of 0.003 mm and a diameter tolerance of 0.00008 mm, making it appropriate for traceable quality-control documentation.

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