Micrometer Mitutoyo 122-107 Blade : High Accuracy & Best Tool

The Mitutoyo 122-107 Blade Micrometer is a precision measuring instrument designed for accurately gauging the groove diameters of shafts, keyways, and other hard-to-reach features.

With a measuring range of 150–175mm, a graduation of 0.01mm, and an accuracy of ±5µm, it is tailored for high-precision applications in mechanical engineering, manufacturing, and quality control.

A Comprehensive Overview – Mitutoyo 122-107 Blade Micrometer :

Specifications :

• Measuring Range: 150–175 mm
• Graduation: 0.01 mm
• Accuracy: ±5 µm (±0.005 mm)
• Parallelism: 5 µm
• Tip Size: 0.75 mm
• Spindle/Anvil Material: Hardened steel
• Design Type: Type A
• Ratchet Stop: Ensures consistent measuring force

The Mitutoyo 122-107 Blade Micrometer is designed for precise measurement of narrow grooves, slots, and other hard-to-reach dimensions. Its blade-like anvil allows for measurements in tight spaces where standard micrometers cannot reach.

Design and Build Quality :

The Mitutoyo 122-107 features a robust design with a non-rotating spindle and a ratchet stop mechanism that ensures consistent measuring force, enhancing measurement reliability.

The blade-type anvil and spindle are specifically designed to measure the groove diameters of shafts and keyways, making it ideal for applications where traditional micrometers may not reach. The instrument’s hardened steel construction, combined with carbide-tipped measuring faces, provides durability and resistance to wear.

Performance and Accuracy :

With a graduation of 0.01mm and an accuracy of ±5µm, the Mitutoyo 122-107 delivers high-precision measurements. The ratchet stop mechanism ensures that the same measuring force is applied during each measurement, reducing the risk of user-induced errors.

The blade-type design allows for measurements in grooves and other difficult-to-access areas, providing versatility in various measurement tasks.

Positive Aspects :

• High Precision: The micrometer offers a high level of accuracy, making it suitable for critical measurement tasks.

• Specialized Design: The blade-type anvil and spindle are tailored for measuring groove diameters, a feature not commonly found in standard micrometers.

• Consistent Measuring Force: The ratchet stop mechanism ensures that the same measuring force is applied during each measurement, enhancing measurement reliability.

• Durability: The hardened steel construction and carbide-tipped measuring faces provide durability and resistance to wear.

Negative Aspects :

• Limited Range: The measuring range of 150–175mm may not be suitable for applications requiring measurements outside this range.

• Manual Operation: The micrometer requires manual operation, which may be less efficient compared to digital models.

• Weight: At approximately 950g, the micrometer may be heavier than some users prefer for extended use.

Applications in Industry :

Precision Engineering :

In precision engineering, the 122-107 Blade Micrometer is invaluable for measuring internal features such as grooves and slots with high accuracy. Its design ensures that measurements are consistent and reliable, which is crucial in the manufacturing of components that require tight tolerances.

Tool and Die Making :

Tool and die makers often use this micrometer to measure the internal dimensions of molds and dies. The blade anvil’s ability to reach into narrow cavities makes it ideal for ensuring the correct dimensions of these tools, which directly impacts the quality and functionality of the final product.

Quality Control and Inspection :

In quality control laboratories, the 122-107 Blade Micrometer is used to verify the dimensions of components during the inspection process. Its high accuracy ensures that only components meeting the specified tolerances proceed to the next stage of production, maintaining the overall quality of the manufacturing process.

Maintenance Tips :

• Cleanliness: Keep the micrometer clean and free from debris to prevent measurement errors.
• Proper Storage: Store the micrometer in a protective case to avoid damage.
• Regular Checks: Perform regular checks to ensure the micrometer is functioning correctly and has not been damaged.

Comparison with Other Micrometers :

The Mitutoyo 122-107 stands out with its specialized blade-type design and higher accuracy, making it suitable for measuring groove diameters in hard-to-reach areas. In contrast, the Mitutoyo 122-101 and Starrett 436XFL-6 are more compact and lighter, making them suitable for general-purpose measurements in accessible areas.

Conclusion :

The Mitutoyo 122-107 Blade Micrometer is a high-precision instrument designed for specialized applications requiring accurate measurements of groove diameters. Its specialized design, high accuracy, and consistent measuring force make it a valuable tool in mechanical engineering, manufacturing, and quality control.

While it may not be suitable for all measurement tasks, it excels in its intended applications, offering reliability and durability.