Mitutoyo 511-925 Dial Bore Gauge Set Range 18-150mm, Graduation 0.001 mm, With Digital Indicator 543-310B,
Part No. 511-925 | Range 18–150 mm | Digital Indicator
General Tech Services LLC — Genuine Mitutoyo Distributor, Kuwait +965 9807 4888
Product Overview
The Mitutoyo 511-925 dial bore gauge set covers internal diameters from 18–150 mm in one interchangeable system. Its self-centring bridge helps align the measuring head with the true bore diameter, while interchangeable anvils allow one set to cover a broad range of internal dimensions.
The carbide contact point provides wear resistance for repeated inspection, while the hollow-structure grip reduces heat transfer from the operator's hand by 50% for stable measurements during extended inspection sessions.
The set is supplied with a Mitutoyo 543-310B digital indicator, allowing measurements to be displayed directly. Where supported by the indicator and connected data-collection setup, readings can also be transferred for measurement recording.
Typical applications include engine cylinders, pump casings, valve bodies and large bearing housings. The 511-925 is suited to oil and gas maintenance workshops, refinery and petrochemical shutdown teams, CNC machine shops and industrial inspection teams in Kuwait.
Temperature control is important for precision bore inspection. Steel expands by approximately 11.5 μm per metre per °C. At 150 mm, a 10°C temperature difference can correspond to approximately 17.2 μm of dimensional change. Allow the Mitutoyo 511-925 and the workpiece to reach the same temperature before taking a final reading.
Key Benefits
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Self-centring bridge — helps align the measuring head with the true bore diameter
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Digital indicator — supplied with Mitutoyo 543-310B for direct digital readings
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Carbide contact point — provides wear resistance for repeated measurements
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Heat-insulating hollow-structure grip — reduces heat transfer from the operator's hand by 50%
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Fine setting — interchangeable 0.5 mm washers allow small step adjustments
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Deep-hole measurement — optional extension rods provide additional reach
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Wide measuring range — covers 18–150 mm with one interchangeable set
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Data collection capability — readings can be transferred where supported by the indicator and setup
Who This Product Is Best For
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Machine shops checking engine cylinders and machined bores
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QC inspectors measuring bore size, taper and ovality
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Oil and gas maintenance workshops in Kuwait
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Refinery and petrochemical shutdown teams
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CNC machining workshops
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Engine, pump and hydraulic rebuild workshops
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Industrial inspection teams requiring digital bore measurements
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Buyers standardising on an interchangeable Mitutoyo 511-series bore gauge set
How to Measure a Bore With This Gauge
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Select the appropriate anvil and 0.5 mm washer combination for the nominal bore size.
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Set the gauge against a setting ring or master of known size and establish the reference.
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Zero the digital indicator according to the applicable measurement procedure.
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Insert the gauge into the bore and gently rock it through the measuring position.
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Identify the minimum reading or turning point of the indicator and record the deviation from the reference dimension.
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Repeat measurements at different depths and positions when checking for taper or ovality.
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Keep the gauge and workpiece at the same temperature before taking the final reading.
Frequently Asked Questions
What range does the Mitutoyo 511-925 dial bore gauge set measure?
It measures internal diameters from 18–150 mm.
Is a digital indicator included?
Yes. The set is supplied with a Mitutoyo 543-310B digital indicator.
Do I need a setting ring?
A setting ring or master of known size is used to establish the reference before measurement and helps maintain consistent results.
Why does the grip matter?
Heat from the operator's hand can affect dimensional stability. The hollow-structure insulating grip reduces heat transfer from the hand by 50%.
What makes the 511-925 suitable for multiple bore sizes?
The set uses interchangeable anvils and a self-centring bridge, allowing one gauge system to cover internal diameters from 18–150 mm.
How does the 511-925 differ from the 511-922?
Both sets cover 18–150 mm, but the 511-925 is supplied with a digital 543-310B indicator, while the 511-922 uses a 0.001 mm dial indicator.
Can measurements be sent to a data-collection system?
The supplied 543-310B digital indicator can support data collection where the applicable connection and data-collection setup are supported.
Can the Mitutoyo 511-925 be recalibrated?
Yes. Periodic recalibration through an ISO/IEC 17025-accredited calibration service can help maintain measurement traceability.
How should I store and care for the gauge set?
Clean the measuring faces after use, store the instrument in its case away from direct sunlight and coolant, and avoid dropping it. Check the reference before each inspection and schedule periodic calibration as required.
How do I order the Mitutoyo 511-925 in Kuwait?
Pricing is quote-based. Call or WhatsApp +965 9807 4888 with the model number and required quantity for pricing and availability.
