20mm Ceramic Gauge Ball (Si3N4) 0.003mm Accuracy, HV1400-1700 Hardness - Metav IndustryLine

Take advantage of the combination of tight dimensional control, ceramic Si3N4 construction, and consistent surface quality to keep gauge routines repeatable and traceable; order the measuring sphere directly via Metav Werkzeuge or consult our specialists for application advice.

Ceramic measuring ball (Si3N4), 20 mm — 0.003 mm accuracy, high hardness

Ceramic measuring ball (Si3N4), 20 mm is a precision gauge sphere for use in metrology and checking fixtures, designed for applications that demand stable reference geometry and fine tolerances

• Ceramic Si3N4, high hardness HV1400–1700
• Diameter 20 mm with 0.003 mm accuracy
• Diameter tolerance 0.00008 mm
• Ultra-smooth surface Ra 0.01 µm

Consistent dimensional reference for precision gauging

The sphere provides a stable reference with an accuracy of 0.003 mm, making it suitable for high-resolution comparative checks and fixture references. Its nominal diameter of 20 mm and the very tight diameter tolerance of 0.00008 mm allow technicians to rely on repeatable contact points during comparative measurements. This precision reduces measurement uncertainty in routine checks and supports decision-making in quality control by supplying a quantifiable reference value for alignment and repeatability tests.

Ceramic construction balancing stiffness and handling

Manufactured from ceramic (Si3N4), the component exhibits a measured hardness of HV1400–1700, which contributes to dimensional permanence under normal contact conditions. At a mass of 0.08 kg the sphere is easy to handle and integrate into gauges and nests without excessive inertial effects. The specified surface finish of Ra 0.01 µm contributes to low micro-roughness at the contact area, helping to reduce variation from micro-contact deformation and improving the reproducibility of tactile probing or optical inspection contact points.

Fit for metrology benches and gauge blocks

As a dedicated gauge sphere within the “Lehren” category, the measuring ball supports a wide range of metrological uses: reference points in tactile probing, datum construction in fixture checks, and verification spheres for coordinate measuring routines. The SKU M318.446 and GTIN 4054469184432 identify the item for procurement systems and inventory control, simplifying integration into procurement and calibration workflows. The compact 20 mm size provides compatibility with many standard nests and three-point seatings used in laboratories and workshop inspection benches.

Operational advantages for workshop and lab environments

Selecting a ceramic gauge sphere with these specifications helps to reduce rework and improves the traceability of measurement chains. The combination of tight tolerance, low surface roughness and documented material properties supports reproducible contact conditions and contributes to stable long-term baselines for comparative measurements. Working with a supplier that focuses on accessibility and dependable logistics ensures that precision parts are available when needed, thereby supporting uninterrupted production and inspection processes.

For application-specific advice or to add this measuring ball (SKU M318.446) to a metrology kit, contact Metav Werkzeuge for tailored recommendations and fast supply from Emmerich.

Technical data

• Article number: M318.446
• GTIN: 4054469184432
• Manufacturer: Metav IndustryLine

Facts

• Diameter: 20 mm
• Accuracy: 0.003 mm (3 µm)
• Diameter tolerance: 0.00008 mm (0.08 µm)
• Surface roughness (Ra): 0.01 µm
• Hardness: HV1400–1700
• Weight: 0.08 kg

Special features

• Material: Ceramic (Si3N4)
• Category: Gauges (Lehren)
• Label: Messkugel aus Keramik (Si3N4), 20 mm Genauigkeit 0,003 mm

FAQ

What applications is this ceramic measuring ball suitable for? This ceramic measuring ball (Si3N4) with SKU M318.446 is suitable as a reference sphere for tactile probing, fixture checks and precision comparative gauging in metrology benches and workshop inspection setups.

How tight is the diameter control on the sphere? The sphere offers an accuracy of 0.003 mm and a diameter tolerance of 0.00008 mm, delivering repeatable contact geometry for high-resolution checks.

What material and hardness does the sphere have? The sphere is made from ceramic (Si3N4) and specified with a hardness of HV1400–1700, contributing to stable geometry under normal measurement contacts.

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