Mitutoyo 122-102 Blade Micrometer, Hardened Steel Blade 25-50mm, 0.75mm Blade

Part Number: Mitutoyo 122-102

The Mitutoyo 122-102 blade micrometer features blade-shaped anvil and spindle faces with a 0.75 mm hardened steel blade, allowing it to reach grooves, keyways and narrow slots that conventional flat-faced micrometers cannot easily access. It measures 25–50 mm with 0.01 mm graduation and ±3 μm accuracy. Request a quote in under a minute: call or WhatsApp +965 9807 4888.

Flat micrometer faces can be too wide for grooves, keyways and narrow slots, causing the measurement to land on the shoulder instead of the actual feature. The Mitutoyo 122-102 blade micrometer uses blade-shaped anvil and spindle faces designed to reach the bottom of these narrow features.

The non-rotating spindle keeps the blade parallel to the slot as it closes, helping prevent twisting or scoring of the workpiece. Its 0.75 mm hardened steel blade is designed for durability in regular workshop and inspection applications.

With a measuring range of 25–50 mm and 0.01 mm graduation, the Mitutoyo 122-102 is suitable for measuring keyways, O-ring and circlip grooves, splines and narrow slots on shafts. It is useful for machinists, maintenance teams and QC inspectors performing shaft and seal inspections.

For accurate results, allow the Mitutoyo 122-102 and the workpiece to reach the same temperature before taking a final measurement. Temperature differences between workshop floors and cooled inspection areas can affect dimensional readings.

For larger groove diameters, consider the Mitutoyo 122-103 for 50–75 mm. For digital readout, compare the Mitutoyo 422-231-30 for 25–50 mm. For abrasive materials, the Mitutoyo 122-162 uses a carbide-tipped blade.

Key Benefits

• Non-rotating spindle — keeps the blade aligned with the slot without twisting the workpiece

• 0.01 mm graduation — clear analogue reading with no battery required

• Stated accuracy — ±3 μm across the measuring range

• Durable blade — 0.75 mm hardened steel construction for long service life

• Consistent measuring force — ratchet stop helps maintain consistent pressure between operators

• Mitutoyo Series 122 — mechanical blade micrometer design for precision inspection applications

• Reaches narrow features — blade faces measure groove floors, keyways and slots directly

Ready to order the Mitutoyo 122-102? Call or WhatsApp +965 9807 4888 for a fast quote.

Who This Product Is Best For

• Machinists measuring keyways and narrow slots

• Pump, motor and gearbox rebuild shops checking seal and circlip grooves

• QC inspectors verifying groove dimensions against engineering drawings

• Maintenance teams requiring a battery-free precision measuring tool

• Buyers who need blade-shaped measuring faces instead of a conventional flat-anvil outside micrometer

How to Use

1. Clean the blade faces and check zero using a setting standard of known size.

2. Align the blade faces with the groove or keyway so they sit square to the feature.

3. Close the micrometer gently using the ratchet stop until it clicks.

4. Read the sleeve and thimble graduations.

5. Record the measurement and compare it with the required drawing or inspection specification.

Frequently Asked Questions

What range does the Mitutoyo 122-102 blade micrometer measure?

It measures 25–50 mm with 0.01 mm graduation.

What is a blade micrometer used for?

It is used to measure groove diameters, keyways, splines and narrow slots where conventional flat-faced micrometer measuring faces cannot reach the feature.

Why is the spindle non-rotating?

The non-rotating spindle keeps the blade parallel to the slot while closing, helping prevent the blade from twisting out of the groove or scoring the workpiece.

Hardened steel or carbide-tipped blade: which should I choose?

Hardened steel is suitable for general measurement work. Carbide-tipped blades provide greater resistance to abrasion and are useful for hard or abrasive materials and heavy-use inspection applications.

Which blade micrometer should I choose if my groove is outside the 25–50 mm range?

Choose a range that brackets the required groove diameter. The Mitutoyo 122-101 covers 0–25 mm, while the Mitutoyo 122-103 covers 50–75 mm. Blade thickness should also be considered when measuring particularly narrow grooves.

Can the Mitutoyo 122-102 be recalibrated?

Yes. The micrometer can be periodically recalibrated through an ISO/IEC 17025-accredited calibration service to maintain measurement traceability.

How do I order the Mitutoyo 122-102 blade micrometer in Kuwait?

Pricing is quote-based. Call or WhatsApp +965 9807 4888 to confirm price and availability.

For pricing, availability or to place an order, call or WhatsApp +965 9807 4888.