Split Ball probe

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At Innovative Measurement Technology, we offer DIATEST Split-Ball Probes as a versatile and highly accurate solution for internal diameter measurement. These modular, high-performance gauges are ideal for both serial production and individual part inspection, delivering exceptional repeatability and reliability in a wide range of industrial applications.

What is a Split-Ball Probe?

A Split-Ball Probe is a mechanical internal measuring device designed to detect diameter deviations, geometrical shape defects, and form errors such as ovality, barrel shape, and concentricity. Its split-ball design ensures consistent contact with the bore surface, enabling precise and repeatable measurements even in challenging environments.

Key features

Wide Measuring Range: Available in sizes from Ø 0.47 mm to 41.1 mm, with options for deeper bores and parallel measurement.
DLC Coating (Diamond-Like Carbon): Enhances wear resistance, reduces friction, and extends service life.
High Repeatability: Manual gauging accuracy of approx. 1 µm, and <0.5 µm when used in a stand.
Modular Design: Compatible with a wide range of accessories, indicators, and holders for flexible setup.
Digital & Mechanical Compatibility: Works with mechanical dial indicators or digital min-max indicators, including wireless data transfer options.

Precision Bore Gauging for Internal Diameter Measurement

Complete DIATEST Split-Ball Probe Sets

We supply a wide selection of complete gauging sets, each packaged in a durable wooden box with a range chart and space for setting rings. These sets include:

Split-Ball Probes (standard, DLC-coated, carbide, ceramic)
Standard and Blind Bore Needles
Standard Holder (MH6-51)
Wrench (SW7-G)

Example Sets Available:

M1 Set: Ø 1.50 – 2.45 mm
M2 Set: Ø 3.80 – 9.80 mm
M3 Set: Ø 9.70 – 20.60 mm
E1, E2, E3 Sets: Inch-based equivalents for imperial applications

🔎 These are just a few examples from the full DIATEST range. Many more sizes and configurations are available to suit your specific application.

Setting Ring Sets & Accessories

To ensure accurate calibration, we also offer precision-ground setting rings in boxed sets:

RM2 Box: For M2 and E2 sets
RM3 Box: For M3 and E3 sets

Each box includes a full range of standard nominal sizes, perfectly matched to the probe sets.

Indicators & Digital Readouts

Enhance your measurement system with:

Mechanical Dial Indicators: Rugged and reliable
Digital Indicators: With min/max memory, tolerance settings, and optional wireless data output
Wireless Modules: For seamless SPC integration
Checking stand MST102

Applications

Precision Bore Measurement
Quality Control in Production
Inspection of Cylindrical Components
Detection of Shape Deviations
Automated and Manual Gauging Systems

Available Variants

Standard DLC-Coated Probes: Ø 0.47 – 41.1 mm
Carbide Inserted Probes: Ø 1.5 – 41.1 mm
Ceramic Inserted Probes: Ø 3.7 – 41.1 mm
Blind Bore Probes: Ø 1.5 – 41.1 mm
Deep Bore Probes: Ø 2.05 – 9.8 mm
Parallel Measurement Probes: Ø 4.7 – 41.1 mm
Custom Shapes: Available on request for recesses, outer diameters, and more.

Why choose Split Ball probes?

Engineered for Precision: Trusted by manufacturers worldwide for high-accuracy bore gauging.
Built to Last: DLC coating ensures long-term durability and consistent performance.
Flexible Integration: Easily incorporated into manual or automated gauging systems.
UK-Based Support: Local expertise and technical support from Innovative Measurement Technology / DIATEST UK Metrology.