5 mm Ceramic Measurement Ball (Si3N4) 0.003 mm Accuracy, HV1400-1700 Hardness - Metav IndustryLine

Take advantage of the combination of extreme wear resistance, pinpoint dimensional accuracy and repeatable surface quality to support reliable gauge and inspection workflows; order the ceramic measuring sphere directly via Metav Werkzeuge or ask our consultants if needed.

Ceramic Measuring Sphere SI3N4, Ø 5 mm — 0.003 mm accuracy (Metav IndustryLine)

The Ceramic Measuring Sphere SI3N4, 5 mm is a precision gauge sphere for reference and inspection applications, designed for use in calibration rigs, tactile probing checks and high‑accuracy gauge assemblies in industrial metrology.

• Silicon nitride (Si3N4) for exceptional wear resistance
• Diameter accuracy 0.003 mm for precise reference
• Diameter tolerance 0.00008 mm for tight repeatability
• Surface roughness Ra 0.00001 for minimal contact error

Consistent reference for inspection and calibration

The sphere is manufactured from silicon nitride (Si3N4), a technical ceramic that combines high hardness with thermal stability. With a nominal diameter of Ø 5 mm and a specified accuracy of 0.003 mm, the component serves as a compact reference element in probe calibration and comparative measurement setups. The material choice reduces wear during repeated contact cycles and limits thermal expansion compared with common metallic spheres, which supports repeatable measurements across shifts and environmental changes.

Measurable benefits for metrology processes

Fine surface quality and tight geometry reduce measurement scatter: the product features a tolerance of 0.00008 mm and a surface roughness of Ra 0.00001, attributes that lower contact uncertainty when used with tactile or optical probes. These parameters mean that the sphere contributes negligible form error to short‑range calibrations and can be relied upon as a stable datum in inspections of miniature parts or when validating machine probing routines. The hardness rating HV1400–1700 emphasises resistance to indentation under common probe forces.

Practical integration into workshop and lab environments

Compact mass and size make the component easy to position in fixtures or on setting plates without affecting larger assemblies: the unit weight is indicated as 0.08 kg, offering a balance between handling and stability. As a gauge element categorised under gauges, it is suitable for incorporation into existing inspection jigs, comparator stands and reference sets. Traceability is aided by clear product identification (GTIN and SKU), allowing straightforward inventory and quality‑management records in production or calibration labs.

Contact Metav Werkzeuge in Emmerich for advice on integrating the gauge sphere into measurement rigs or to arrange prompt delivery of the Metav IndustryLine ceramic measuring sphere M318.435.

Technical Data

• Article number: M318.435
• GTIN: 4054469184357
• Material: Silicon nitride (Si3N4)
• Diameter: 5 mm
• Accuracy: 0.003 mm
• Weight: 0.08 kg
• Hardness: HV1400–1700

Facts

• Diameter tolerance: 0.00008 mm
• Surface roughness Ra: 0.00001
• Nominal size: 5 mm
• Category: Gauges

Special features

• High wear resistance ceramic
• Low thermal expansion relative to metals
• Suitable for tactile probing and comparator use
• Compact reference element for metrology setups

FAQ

What does the 0.003 mm accuracy mean for measurement tasks? The stated accuracy of 0.003 mm denotes the maximum expected deviation from the nominal diameter of the Ceramic Measuring Sphere SI3N4, 5 mm during delivery; it provides a reliable reference tolerance for short‑range calibrations and probe checks.

Why choose a silicon nitride sphere over a steel sphere? Silicon nitride (Si3N4) offers superior wear resistance and lower thermal expansion than many steels; the material choice for the gauge sphere reduces surface degradation and improves stability in repeated-contact applications.

Can this sphere be used for probe calibration on coordinate measuring machines? Yes, the gauge sphere’s geometry and surface quality are suitable for use as a reference in probe calibration routines and quick verification checks within inspection workflows.

How is repeatability supported by the sphere’s specifications? Repeatability benefits from the combination of a tight diameter tolerance (0.00008 mm), low surface roughness (Ra 0.00001) and high material hardness (HV1400–1700), which together minimise contact‑induced variation.

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