Mitutoyo 511-922 Dial Bore Gauge Set, Range 18-150mm, Graduation 0.001 mm
Part No. 511-922 | Range 18–150 mm | Graduation 0.001 mm
General Tech Services LLC — Genuine Mitutoyo Distributor, Kuwait +965 9807 4888
Product Overview
The Mitutoyo 511-922 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 more stable readings during extended measurement sessions. The supplied dial indicator provides 0.001 mm graduation for detailed internal-bore inspection.
Typical applications include engine cylinders, pump casings, valve bodies and large bearing housings. The 511-922 is suited to QC inspectors, calibration laboratories, fabrication and machining workshops, and industrial maintenance teams serving Kuwait's oil, gas and utilities sectors.
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 511-922 and the workpiece to reach the same temperature before taking a final reading.
Key Benefits
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Wide measuring range — covers 18–150 mm with one interchangeable set
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Self-centring bridge — helps align the measuring head with the true bore diameter
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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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0.001 mm graduation — supports detailed internal-bore inspection
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Interchangeable anvils — allow the same gauge system to cover different bore sizes
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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Calibration laboratories requiring repeatable internal-diameter measurements
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Oil and gas maintenance workshops in Kuwait
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Fabrication and machining workshops
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Engine, pump and hydraulic rebuild workshops
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Industrial maintenance teams inspecting internal bores
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Buyers standardising on the Mitutoyo 511-922 dial 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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Insert the gauge into the bore and gently rock it through the measuring position.
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Identify the turning point of the 0.001 mm dial 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 511-922 dial bore gauge set measure?
It measures internal diameters from 18–150 mm.
Is a dial indicator included?
Yes. The Mitutoyo 511-922 is supplied with a 0.001 mm dial 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 511-922 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 511-922 differ from the 511-921?
Both sets cover 18–150 mm, but the 511-922 is supplied with a 0.001 mm indicator, while the 511-921 uses a 0.01 mm indicator.
Can the Mitutoyo 511-922 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 511-922 in Kuwait?
Pricing is quote-based. Call or WhatsApp +965 9807 4888 with the model number and required quantity for pricing and availability.
