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

Benefit from the combination of hardened chrome-steel construction, a compact 5 mm diameter and a verified 0.003 mm accuracy for reliable reference measurements; order the gauge ball pair directly via Metav Werkzeuge or consult our specialists for application advice.

Gauge ball pair, 5 mm — hardened chrome steel, 0.003 mm accuracy (Metav IndustryLine)

A gauge ball pair designed as a compact, high-precision reference for gauging, fixture set-up and comparative checks in workshop and metrology environments.

• Hardened chrome-steel spheres, >HRC 62
• Diameter 5 mm, tight tolerance 0.00008 mm
• Measurement accuracy 0.003 mm
• Supplied as a matched pair, weight approx. 0.05 kg

Precision that shortens inspection cycles

The matched spheres serve as a compact high-precision reference for routine checks and set-ups. With a nominal diameter of 5 mm and an indicated measurement accuracy of 0.003 mm, the pair reduces uncertainty during comparative measurements and simplifies verification tasks. The very tight diameter tolerance of 0.00008 mm ensures reproducible contact geometry for tactile probes and mechanical comparators, which in turn leads to faster decision-making in quality control workflows.

Material and finish that ensure stability

Manufactured from hardened chrome steel and specified at >HRC 62, the spheres resist wear and maintain dimensional stability under repeated contact. A surface roughness of 0.00001 mm supports consistent probe responses and minimises micro-variation at the contact point. These material and finish properties make the spheres suitable as durable datum features for short-range checks and for use where repeatability is the priority rather than bulk handling.

Practical use in inspection and set-up routines

The matched pair format is intended for applications that require identical reference points, such as comparative measurements, gauging fixtures and small assembly alignments. Their compact form factor allows integration into tight assemblies or fixture jaws without affecting the surrounding geometry. Thanks to the low mass (approx. 0.05 kg per set) and stable hardness, the spheres provide a reliable reference without introducing significant inertia or deformation during probe contact.

Quality indications and application relevance

Supplied as a set of two, the spheres are produced to very narrow tolerances that support consistent metrology practice. Their 0.003 mm accuracy and high hardness make them suitable for precision checks rather than coarse alignment tasks. The product is ideal where reproducible contact conditions are required in gauging workflows and as a repeatable standard for short-range verification tasks. For customised advice on integration into specific inspection routines, Metav’s consultants can clarify compatibility with measuring systems and fixtures.

Contact Metav Werkzeuge for matched gauge spheres, specification support and reliable delivery from Emmerich.

Technical data

• Article number: M318.415
• GTIN: 4054469184036
• SKU: M318.415
• Set contents: 2 pieces

Facts

• Diameter: 5 mm
• Accuracy: 0.003 mm
• Diameter tolerance: 0.00008 mm
• Surface roughness: 0.00001 mm
• Hardness: >HRC 62
• Weight (set): 0.05 kg

Special features

• Material: hardened chrome steel
• Supplied as a matched pair
• Intended use: gauging / reference spheres
• High surface finish
• Category: Gauging

FAQ

What diameter and tolerance do the spheres have?
The spheres have a diameter of 5 mm with a diameter tolerance of 0.00008 mm, specified for the gauge ball pair M318.415.

How accurate are the gauge spheres for reference work?
The matched pair is specified with an accuracy of 0.003 mm, which makes the balls suitable as a short-range reference for repeatable checks and comparative measurements.

Are the spheres hardened for wear resistance?
Yes, the spheres are manufactured from hardened chrome steel with a hardness greater than HRC 62, providing durability under repeated contact.

In which applications are these spheres typically used?
The gauge ball pair is used for fixture set-up, comparative gauging and as compact datum points where reproducible contact geometry is required.

How are the spheres supplied?
The item is supplied as a matched set of two pieces (set of two), ready for immediate use in inspection routines.

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