Mitutoyo 511-817 Micrometer Head Bore Gauge, Range 400 - 600 mm, Graduation 0.01 mm

Genuine Mitutoyo stock · Fast Kuwait-wide delivery

Model No. 511-817

General Tech Services LLC — Genuine Mitutoyo Distributor, Kuwait +965 9807 4888

The Mitutoyo 511-817 micrometer head bore gauge measures very large internal diameters from 400–600 mm. A micrometer head mounted on the anvil lets you set the size directly without requiring a setting ring for every dimension. Request a quote in under a minute: call or WhatsApp +965 9807 4888.

Product Overview

Setting a dial bore gauge for very large diameters normally requires a setting ring of the same size, and large rings can be expensive and heavy. The Mitutoyo 511-817 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 provides wear resistance, while the large sponge-structure grip reduces heat transfer from the operator's hand by 50%, helping improve measurement stability.

Sub-anvils provide a wide measuring range, while optional extension rods allow the gauge 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 very large bores in pump and compressor casings, pipe flanges, turbine housings and heavy fabrications. The Mitutoyo 511-817 is suitable for oil and gas maintenance workshops, refinery and petrochemical shutdown crews, CNC machine shops and industrial maintenance operations across Kuwait.

Temperature control is important for precision measurements. Steel expands by approximately 11.5 μm per metre for every 1°C. At 600 mm, a 10°C temperature difference can change the dimension by roughly 69.0 μm. Allow the workpiece and the Mitutoyo 511-817 micrometer head bore gauge to reach the same temperature before taking a final reading.

For a larger bore range, the Mitutoyo 511-818 covers 600–800 mm.

Key Benefits

• Self-centring guide helps align the gauge with the true bore diameter.

• Carbide contact point provides long wear life.

• Heat-insulating sponge-structure grip reduces heat transfer from the hand by 50%.

• Micrometer head setting allows large sizes to be set without a matching-size ring.

• Optional extension rods support deep-hole measurements.

• Sub-anvils provide a wide measuring range.

• 0.01 mm graduation supports precise large-bore measurement.

• Mitutoyo 511 series design for repeatable bore inspection.

Who This Product Is Best For

• Machine shops checking very large pump and compressor casing bores.

• QC teams measuring bore size, taper and ovality.

• Industrial maintenance teams inspecting large internal diameters.

• Engine, pump and hydraulic rebuild workshops.

• Oil and gas maintenance contractors.

• Refinery and petrochemical shutdown crews.

• CNC machine shops working with large fabricated or machined components.

• Buyers standardising on the Mitutoyo 511-817 for repeatable large-bore checks.

How to Use

1. Fit the appropriate anvil or washer combination for the nominal bore size.

2. Set zero against a setting ring or master using the micrometer head.

3. Insert the gauge into the bore and gently rock it through the diameter.

4. Read the turning point on the indicator.

5. Record the deviation from nominal and repeat measurements at different depths to check for taper.

6. Take measurements at suitable positions to assess bore size and ovality.

Frequently Asked Questions

What range does the Mitutoyo 511-817 micrometer head bore gauge measure?

It measures internal diameters from 400–600 mm.

Is a dial indicator included?

Yes, it is supplied with a 0.01 mm indicator.

Do I need a setting ring?

The micrometer head mounted on the anvil lets you set the size directly. A setting ring or Inside Micro Checker is optional for confirmation.

Why does the grip matter?

Heat from the operator's hand can affect precision measurements. The larger insulating grip reduces heat transfer from the hand by 50%, helping keep readings stable.

Which model should I choose if my part is outside 400–600 mm?

Choose the Mitutoyo 511 series model whose range covers the required bore size. The 511-817 covers 400–600 mm; the 511-816 covers 250–400 mm, while the 511-818 covers 600–800 mm.

Can it be recalibrated?

Yes. The Mitutoyo 511-817 can be recalibrated periodically through an ISO/IEC 17025-accredited calibration service to help keep measurements traceable.

How should I store and care for it?

Wipe the measuring faces clean after use, store the instrument in its case away from direct sunlight and coolant, and avoid dropping it. Check zero before each shift and schedule periodic calibration to maintain measurement traceability.

How do I order the Mitutoyo 511-817 micrometer head bore gauge in Kuwait?

Pricing is quote-based. Call or WhatsApp +965 9807 4888 with the model number and quantity, and our Kuwait team will confirm pricing and availability.

Request Pricing & Availability

For current pricing and availability of the Mitutoyo 511-817 micrometer head bore gauge in Kuwait, contact General Tech Services LLC.

Call or WhatsApp +965 9807 4888 for a fast quotation.