Mitutoyo 511-825 Micrometer Head Bore Gauge, Range 150 - 250 mm, Graduation 0.001 mm
Genuine Mitutoyo stock · Fast Kuwait-wide delivery
Part No. 511-825 | Range 150–250 mm
General Tech Services LLC — Genuine Mitutoyo Distributor, Kuwait +965 9807 4888
The Mitutoyo 511-825 micrometer head bore gauge measures large internal diameters from 150–250 mm. Its micrometer head is mounted on the anvil, allowing the gauge to be set conveniently and accurately without requiring a matching setting ring for every dimension. It is suited to machine shops, quality control, maintenance, calibration, and industrial inspection applications across Kuwait.
Request a quote in under a minute — call or WhatsApp +965 9807 4888.
Product Overview
Setting a dial bore gauge for large diameters normally requires a setting ring matching the bore size, and large rings can be expensive and heavy. The Mitutoyo 511-825 has a micrometer head mounted on the anvil, allowing the required dimension to be set conveniently and accurately at the bench.
The gauge features a longer plunger stroke while maintaining its original precision. Its carbide contact point resists wear, while the large sponge-structure grip reduces heat transfer from the operator's hand by 50%. Sub-anvils provide a wide measuring range, and optional extension rods can be used to reach deep holes.
An optional inside-length standard, such as a setting ring or Inside Micro Checker, can be used to confirm the setting.
Typical applications include compressor casings, large valve bodies, turbine housings, and gearbox housings. The gauge is suitable for machine shops, QC teams, power and desalination plant maintenance teams, and oil and gas service contractors in Kuwait.
For accurate results, allow the Mitutoyo 511-825 and workpiece to reach the same temperature before measuring. Steel expands by approximately 11.5 μm per metre per °C. At 250 mm, a 10 °C temperature difference can shift the reading by approximately 28.8 μm.
For a larger bore range, the Mitutoyo 511-826 covers 250–400 mm.
Key Benefits
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Carbide contact point — provides long wear life
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Heat-insulating grip — reduces heat transfer from the hand by 50%
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Micrometer head setting — allows large sizes to be set without a matching ring
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Deep-hole ready — optional extension rods provide additional reach
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Self-centring — the guide helps align the measuring head with the true diameter
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0.001 mm graduation — supports precise large-bore measurement
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Mitutoyo 511 series — designed for large-bore inspection applications
Ready to order the 511-825? Call or WhatsApp +965 9807 4888 for pricing and availability.
Who This Product Is Best For
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Machine shops checking compressor casings and large internal diameters
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QC teams measuring bore size, taper and ovality
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Power and desalination plant maintenance teams
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Oil and gas service contractors carrying out large-bore inspections
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Calibration and quality teams requiring repeatable bore measurements
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Engine, pump and hydraulic rebuild workshops
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Fabrication and machining workshops
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Buyers standardising on the Mitutoyo 511-825 for repeatable bore checks
How to Measure a Bore With This Gauge
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Fit the appropriate anvil or washer combination for the nominal bore size.
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Set zero on a setting ring or master using the micrometer head.
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Insert the gauge into the bore and gently rock it through the measuring position to locate the turning point on the indicator.
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Record the deviation from the nominal dimension and repeat the measurement at different depths or positions when checking taper and ovality.
Frequently Asked Questions
What range does the Mitutoyo 511-825 micrometer head bore gauge measure?
It measures internal diameters from 150–250 mm.
Is a dial indicator included?
Yes. It is supplied with a 0.001 mm indicator.
Do I need a setting ring?
The micrometer head mounted on the anvil allows the required size to be set directly. A setting ring or Inside Micro Checker can optionally be used to confirm the setting.
Why does the grip matter?
Heat from the operator's hand can affect the gauge and measurement. The larger insulating grip reduces heat transfer from the hand by 50%, helping improve measurement stability.
Which model should I choose if my part is outside 150–250 mm?
Choose the Mitutoyo 511-series model whose measuring range covers the required bore. The 511-825 covers 150–250 mm, while the 511-824 covers 100–160 mm and the 511-826 covers 250–400 mm.
Can it be recalibrated?
Yes. The Mitutoyo 511-825 can be periodically recalibrated through an ISO/IEC 17025-accredited calibration service to maintain measurement traceability.
How should I store and care for it?
Wipe the measuring faces clean after use and store the instrument in its case away from direct sunlight and coolant. Avoid dropping the gauge, check zero before each shift and schedule periodic calibration to maintain traceability.
How do I order the Mitutoyo 511-825 micrometer head bore gauge in Kuwait?
Pricing is quote-based. Call or WhatsApp +965 9807 4888 with the model number and required quantity, and the General Tech Services LLC team will confirm pricing and availability.
Request Pricing & Availability
For the Mitutoyo 511-825 micrometer head bore gauge, contact General Tech Services LLC in Kuwait for current pricing and stock availability.
Call or WhatsApp +965 9807 4888 to request a quote.
