4 mm Chrome Steel Gauge Spheres Pair, Hardened 0.003 mm Accuracy, Diameter Tolerance 0.00008 mm - Metav IndustryLine

Take advantage of exceptional dimensional stability and submicrometre surface quality to secure repeatable reference measurements; this hardened chrome‑steel pair combines compact size with laboratory-grade 0.003 mm accuracy for reliable gauge work. Order the gauge ball pair directly via Metav Werkzeuge or ask our consultants if needed.

Messkugel‑Paar M318.414 — Gauge ball pair, 4 mm, 0.003 mm accuracy (Metav IndustryLine)

Messkugel‑Paar M318.414 is a compact pair of hardened gauge balls for precision checking, alignment and reference tasks in metrology and fixture inspection.

• Diameter 4 mm, calibrated accuracy 0.003 mm
• Hardened chrome steel > HRC 62 for wear resistance
• Diameter tolerance ±0.00008 mm for repeatable references
• Surface roughness Ra 0.00001 mm for minimal contact deviation

Anchoring measurement certainty with compact reference spheres

The small 4 mm diameter spheres serve as stable reference points when fine positional repeatability is required. With a declared accuracy of 0.003 mm and a diameter tolerance of ±0.00008 mm, the pair is suitable for comparative measurements, gauge setting and high‑precision alignment. The numerical specifications translate into tangible benefits: reduced setup time, consistent runout checks and dependable baseline readings for inspection routines. These attributes make the set a rational choice for workshops and quality departments that prioritise measurable improvements in process control.

Built to last under frequent handling and contact

Manufactured from hardened chrome steel with hardness above HRC 62, the spheres resist deformation and maintain geometry under repeated use. The exceptionally fine surface finish (Ra 0.00001 mm) minimises micro‑asperity contact, lowering measurement noise when used against probes or fixture seats. As a result, the components deliver durable service life and preserve calibration intervals, offering an economical route to long‑term measurement stability rather than frequent replacements.

Practical integration and handling for metrology workflows

Supplied as a calibrated set of two pieces, the pair is lightweight (approx. 0.05 kg) and easy to handle during fixture set‑up, tactile probing and comparative checks. The compact format suits confined inspection jigs and measuring rigs where larger standards would be impractical. The pair functions as reference spheres for concentricity tests, probe calibration and positional verification; their geometry and finish support precise contact with stylus tips and gauge seats while maintaining repeatability across cycles.

Contact Metav Werkzeuge for expert advice and procurement of the Metav IndustryLine gauge ball pair M318.414; consultants are available at info@metav-werkzeuge.com or by phone on +49 2822 7131930 to discuss application fit and delivery options

Technical data

• Article number: M318.414
• GTIN: 4054469184029
• Brand: Metav IndustryLine

Facts

• Diameter: 4 mm
• Accuracy: 0.003 mm
• Diameter tolerance: ±0.00008 mm
• Surface roughness Ra: 0.00001 mm
• Hardness: > HRC 62
• Weight (set): 0.05 kg

Special features

• Material: hardened chrome steel
• Delivered as set of 2 pieces
• Intended use: reference spheres for gauges, alignment and inspection
• Compact format for confined fixtures and probe calibration

FAQ

What applications are ideal for these gauge balls?
The gauge ball pair M318.414 is designed for reference and alignment tasks in metrology, probe calibration, concentricity checks and fixture verification within workshop and laboratory environments.

Is the dimensional data sufficient for high‑precision quality control?
Yes, the declared 0.003 mm accuracy and ±0.00008 mm diameter tolerance make the M318.414 suitable for demanding quality assurance tasks where reproducible reference points are required.

How does the material affect longevity and performance?
Made from hardened chrome steel with hardness above HRC 62, the spheres resist wear and retain geometry under repeated contact, preserving measurement reliability over time.

Are the spheres supplied as a matched pair?
Yes, the product is supplied as a set of two pieces, calibrated and intended to be used together for comparative and alignment measurements.

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