Mitutoyo Setting Ring 177-289 1.200″ ID Hardened Alloy Steel

Description

Product Overview

The Mitutoyo 177-289 Setting Ring is engineered for precision calibration work where accuracy and repeatability are paramount. Constructed from hardened alloy steel, the ring offers exceptional wear resistance, ensuring the inside diameter remains stable even after extensive use. The 1.200 inch (30.48 mm) ID is precisely machined and clearly marked on the ring surface, eliminating guesswork and reducing setup time for technicians.

Key specifications include a compact package measuring 3.5 x 3.15 x 1.02 inches and a lightweight of just 0.96 ounces, making it easy to store and transport. The ring conforms to Mitutoyo’s rigorous quality standards, reflecting the brand’s reputation for delivering reliable metrology tools across industrial and scientific applications. Its robust construction allows it to withstand the rigors of daily calibration tasks, from zeroing bore gauges to setting holtests and inside micrometers.

Usage

Designed for use in calibration laboratories, machine shops, and quality control environments, this setting ring serves as a reference standard for a variety of measurement instruments. When zeroing a bore gauge, the ring provides a stable, known diameter that the gauge can be adjusted against, ensuring subsequent measurements are accurate. Holtests benefit from the ring’s precise ID, allowing technicians to set the tool quickly and verify its performance without the need for additional fixtures.

Inside micrometers, which measure internal dimensions, rely on a consistent reference point to achieve true zero. The Mitutoyo setting ring offers that reference, reducing the potential for cumulative error in production runs. Its hardened steel composition also means it resists deformation from repeated handling, making it a dependable choice for high‑volume environments.

Why Choose Us

Choosing the Mitutoyo 177-289 Setting Ring means selecting a product backed by decades of metrology expertise. Mitutoyo’s commitment to precision manufacturing ensures each ring meets tight tolerances, providing confidence that your calibration processes are built on a solid foundation. The ring’s hardened alloy steel construction not only extends its service life but also maintains dimensional stability over time, reducing the frequency of replacement.

Our distribution network offers fast, reliable shipping and responsive customer support. Should you have any questions about installation, compatibility, or maintenance, our technical team is ready to assist. Additionally, the ring comes with a clear, durable marking that resists fading, ensuring the ID remains legible throughout its lifespan.

Key Features

• Hardened alloy steel construction delivers long‑term durability and wear resistance.
• Precisely machined 1.200 inch ID with clear, permanent marking for quick identification.
• Compact size and lightweight design facilitate easy storage and handling in busy workspaces.
• Ideal for zeroing bore gauges, holtests, and inside micrometers, improving measurement accuracy.
• Supported by Mitutoyo’s expert technical service and responsive after‑sales assistance.

FAQ

What material is the setting ring made from?

The ring is forged from hardened alloy steel, providing excellent resistance to wear and deformation.

Can this ring be used with all brands of bore gauges?

Yes, the 1.200 inch ID is a standard size that works with most bore gauges, holtests, and inside micrometers regardless of brand.

How do I read the inside diameter marking?

The ID is permanently etched on the inner surface of the ring, visible when the ring is placed against a light source or viewed with a magnifier.

Is there a warranty or support for this product?

Mitutoyo provides a limited warranty covering manufacturing defects, and our customer support team is available to help with any usage or compatibility questions.

What are the recommended storage conditions?

Store the ring in a clean, dry environment away from corrosive chemicals to maintain its accuracy and surface integrity.