11 mm Gauge Ball Pair Hardened Chrome Steel 0.003 mm Accuracy, Diameter Tolerance 0.00008 mm - Metav IndustryLine

Optimise reference and calibration routines with a hardened chrome‑steel gauge ball pair offering an 11 mm diameter and 0.003 mm accuracy; the combination of tight diameter tolerance and high surface quality delivers reproducible datum points for fixtures and inspection jigs. Order directly via Metav Werkzeuge or ask our consultants for application guidance.

Gauge ball pair M318.421 – 11 mm, 0.003 mm accuracy (Metav IndustryLine)

A gauge ball pair M318.421 designed as high‑precision reference spheres for metrology, go/no‑go gauges and fixture alignment in inspection and workshop environments

• Hardened chrome‑steel gauge balls
• 11 mm nominal diameter
• Accuracy 0.003 mm
• Diameter tolerance 0.00008 mm

Precision that reduces measurement uncertainty

The pair of hardened chrome‑steel spheres provides repeatable reference points for aligning fixtures, checking runout and calibrating contact probes. With an stated accuracy of 0.003 mm and a diameter tolerance of 0.00008 mm, the parts are suitable where reproducibility matters. The very low surface roughness (0.00001 mm) minimises contact variation and friction, helping to maintain consistent probe responses and reducing the need for repeat measurements. These characteristics support faster inspection cycles and more predictable quality control.

Robust material and finish for stable performance

Made from hardened chrome steel (>HRC 62), the spheres resist deformation and wear even under repeated contact measuring. The material choice and hardening ensure that the nominal 11 mm diameter remains stable over time, which is essential for reference artefacts used in fixtures and gauges. Delivered as a set of two, the pair is suitable for establishing datum lines or paired support points. The construction and finish minimise the influence of handling and environmental factors, so calibration intervals can focus on process‑critical instruments rather than consumable reference parts.

Practical benefits for workshop and inspection use

The compact size and high accuracy make these balls a convenient addition to calibration kits and inspection benches. Their geometry allows precise contact with probes and feeler‑type instruments, enabling quick checks without complex setup. Where throughput is important, the consistent contact behaviour translates into fewer reworks and more reliable part acceptance. For applications that require traceable reference artefacts, the clear specification of diameter, tolerance and hardness provides an objective basis for measurement procedures and documentation.

Contact Metav Werkzeuge today to discuss how the Metav IndustryLine gauge ball pair can streamline inspection workflows; our technical team at info@metav-werkzeuge.com or +49 2822 7131930 will advise on integration and supply

Technical Data

• SKU: M318.421
• GTIN: 4054469184098
• Material: Chrome steel, hardened
• Diameter: 11 mm
• Accuracy: 0.003 mm
• Set: contains 2 pieces

Facts

• Weight: 0.05 kg
• Diameter tolerance: 0.00008 mm
• Surface roughness: 0.00001 mm
• Hardness: >HRC 62
• Pieces per set: 2

Special features

• Category: Gauges (reference spheres)
• Finish: high‑precision surface
• Intended use: reference points, fixture alignment, calibration

FAQ

What is the intended use for these gauge balls?
The gauge ball pair M318.421 is intended as high‑precision reference spheres for fixtures, gauge blocks, probe calibration and alignment tasks in inspection and workshop environments.

How precise are the spheres and what tolerance applies?
The spheres have an accuracy of 0.003 mm with a diameter tolerance of 0.00008 mm, making them suitable for reproducible reference measurements and precise datum definition.

What material and hardness are specified for these balls?
The balls are manufactured from hardened chrome steel with a hardness greater than HRC 62, providing wear resistance and dimensional stability for repeated contact measures.

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