Mitutoyo 122-111 Blade Micrometer, Hardened Steel Blade 0-25mm, 0.4mm Blade
Part No. 122-111 | Range 0–25 mm | Graduation 0.01 mm | Accuracy ±3 µm
Product Overview
The Mitutoyo 122-111 Series 122 blade micrometer is designed for measuring narrow grooves, keyways, snap-ring grooves, spline roots and O-ring grooves on small shafts, pins and turned components. Its Type B thin 0.4 mm hardened steel blade can reach features that may be too narrow for a standard 0.75 mm blade.
The micrometer measures from 0–25 mm with 0.01 mm graduation and ±3 µm accuracy. Its non-rotating spindle helps keep the blade aligned with the groove as the measurement is taken, while the ratchet stop provides a controlled 3–8 N measuring force for consistent readings.
The satin chrome thimble and sleeve provide a clear analog metric scale, and the 0-start range allows the zero position to be checked by gently closing the measuring faces. The 122-111 is supplied in a fitted protective case and does not require a separate setting bar because its measuring range starts at zero.
For applications requiring a larger range, see the Mitutoyo 122-142 blade micrometer with a 25–50 mm range and thin carbide-tipped blade.
Key Benefits
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Narrow-feature measurement: The 0.4 mm Type B blade is designed for narrow grooves, keyways and slots.
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0–25 mm measuring range: Suitable for small shafts, pins and precision-machined components.
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±3 µm accuracy: Supports dimensional inspection where tight tolerances are required.
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0.01 mm graduation: Provides clear metric measurement for workshop and inspection applications.
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Non-rotating spindle: Helps keep the blade aligned with the feature during measurement.
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Controlled measuring force: The ratchet stop provides a consistent 3–8 N measuring force.
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Hardened steel blade: Provides a durable measuring surface for routine industrial inspection.
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Easy zero verification: The range starts at zero, allowing the measuring faces to be closed for a quick zero check.
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Fitted protective case: Helps protect the micrometer during storage and transport.
For pricing and delivery availability of the 122-111, call +966 53 132 1586.
Who This Product Is Best For
The Mitutoyo 122-111 is suitable for CNC machining shops, precision manufacturing, automotive component production, pump and valve repair, maintenance departments and quality-control teams.
It is particularly useful for machinists and inspectors who need to measure narrow internal grooves and recessed features that are difficult to access with conventional outside micrometers. The 0–25 mm range makes it suitable for smaller shafts, pins and turned components, while the thin 0.4 mm blade is designed for applications where blade thickness is a limiting factor.
How to Use
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Clean the measuring faces and the feature being measured to remove chips, dirt and debris.
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Close the micrometer gently using the ratchet stop and confirm that the reading is at zero.
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Open the micrometer slightly wider than the groove or keyway.
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Position the thin blades squarely within the feature being measured.
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Operate the ratchet stop until the measuring force is applied consistently.
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Read the sleeve and thimble scale to 0.01 mm resolution.
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Record the measurement while maintaining the micrometer in position on the part.
Frequently Asked Questions
What is the Mitutoyo 122-111 blade micrometer used for?
The 122-111 is designed for measuring narrow grooves, keyways, snap-ring grooves, spline roots and similar recessed features from 0–25 mm. Its thin blade can enter spaces that may be inaccessible to a conventional micrometer.
How accurate is the Mitutoyo 122-111?
The Mitutoyo 122-111 has an accuracy of ±3 µm and a graduation of 0.01 mm. The measuring-face parallelism is specified at 3 µm.
What is the blade thickness of the 122-111?
The 122-111 uses a Type B thin hardened steel blade with a thickness of 0.4 mm. This thin profile is intended for narrow grooves and slots.
Why does the 122-111 use a non-rotating spindle?
The non-rotating spindle helps keep the blade aligned with the groove as the micrometer closes. This is useful when measuring narrow features where blade alignment affects positioning and repeatability.
Does the Mitutoyo 122-111 require a setting standard?
No. The measuring range starts at 0 mm, so a zero check can be performed by gently closing the measuring faces. The micrometer is supplied in a fitted protective case.
What is the difference between the 122-111 and other 0–25 mm Series 122 blade micrometers?
The 122-111 uses a 0.4 mm hardened steel Type B blade. The 122-141 uses a 0.4 mm carbide-tipped Type D blade, the 122-161 uses a 0.75 mm carbide-tipped Type C blade, and the 122-101 uses a 0.75 mm hardened steel Type A blade. The appropriate model depends on the groove width and blade material required for the application.
Is the Mitutoyo 122-111 suitable for measuring keyways and snap-ring grooves?
Yes. Its thin 0.4 mm blade is designed to access narrow grooves, keyways, snap-ring grooves and other recessed features on precision-machined components.
How do I buy the Mitutoyo 122-111 in Saudi Arabia?
Contact General Tech Services in Dammam for pricing and delivery availability. Call +966 53 132 1586 or email mathews@generaltechsaudi.com for a quotation.
