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

A compact reference sphere that combines Si3N4 ceramic hardness, sub‑micrometre surface finish and tight diameter tolerance to deliver repeatable gauging results; ideal where consistent measurement and long service life matter. Benefit from high wear resistance and stable geometry to reduce rework and inspection time. Order the ceramic gauge ball directly via Metav Werkzeuge or ask our consultants if needed.

Ceramic gauge ball (Si3N4), 4 mm — 0.003 mm accuracy | Metav IndustryLine

The ceramic gauge ball (Si3N4), 4 mm is a precision reference sphere for gauging and inspection tasks, designed for use in gauge sets, comparators and quality‑control fixtures

• Si3N4 ceramic, 4 mm diameter
• Dimensional accuracy 0.003 mm
• Diameter tolerance ±0.00008 mm
• Surface roughness 0.00001

Consistent results for tight tolerances

Manufactured from Si3N4 ceramic, this small reference sphere delivers a dimensional accuracy of 0.003 mm, making it suitable for high‑precision comparative measurements and repeatable inspection routines. The tight diameter tolerance of 0.00008 mm and extremely low surface roughness minimise measurement scatter when used as a master sphere or reference in comparator setups. For production environments that demand traceable repeatability, the combination of low form deviation and fine finish reduces the risk of false rejects and shortens calibration cycles, thereby improving throughput and lowering overall inspection costs.

Durability that sustains accuracy over time

The material hardness of HV1400–1700 gives the sphere outstanding wear resistance in contact applications, maintaining spherical geometry under repeated loading. With a mass of 0.08 kg and compact 4 mm size, handling is straightforward while the robust ceramic resists typical wear mechanisms encountered in gauge use. These material properties translate into longer intervals between replacements and fewer process interruptions. In assembly and inspection workflows where component interchangeability is critical, a stable reference sphere preserves the integrity of measurement chains and supports long‑term quality assurance.

Integrates smoothly into metrology routines

Engineered for gauge and inspection applications, the sphere fits directly into precision gauge sets, plug gauges and shank adaptors used on comparators and manual inspection benches. Use as a reference master for surface‑contact probes or as a check artefact for small‑diameter features ensures compatibility with standard metrology procedures. The compact form also makes it suitable for confined fixturing in component checks. If further advice on integration into a specific inspection setup is required, Metav’s distribution and technical team can provide guidance on fixture options and handling to preserve the sphere’s form and finish.

Choose the Metav IndustryLine ceramic gauge ball for dependable reference measurements and contact Metav Werkzeuge in Emmerich for specialist advice at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• SKU: M318.434
• GTIN: 4054469184340
• Manufacturer: Metav IndustryLine

Facts

• Diameter: 4 mm
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness: 0.00001
• Hardness: HV1400–1700
• Weight: 0.08 kg

Special features

• Material: Ceramic (Si3N4)
• Extremely fine surface finish
• Tight dimensional stability
• Intended for gauges and inspection (lehren)

FAQ

What diameter and accuracy does the sphere offer?
The ceramic gauge ball has a diameter of 4 mm and a stated accuracy of 0.003 mm for high‑precision reference use.

Which material is used and how hard is it?
The sphere is made from Si3N4 ceramic with hardness in the range HV1400–1700, providing high wear resistance for contact measurements.

Is the diameter tolerance and surface quality suitable for master gauges?
Yes; the diameter tolerance of 0.00008 mm and a surface roughness value of 0.00001 make it suitable as a master or reference sphere in small‑scale gauging.

Can this sphere be used on comparators and in gauge sets?
The 4 mm ceramic sphere is intended for gauge and inspection applications and is compatible with comparator fixtures and small gauge adaptors.

Is a calibration certificate included with the product?
No calibration certificate is indicated in the product data for this item

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