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The MICRO 100 QRR-087-20X is a solid carbide retaining ring grooving tool designed for cutting internal grooves in bored holes. It accepts a 3/8-inch shank and cuts a groove width of 0.087 inches, making it suited for precision retaining ring seat applications in machined components. With an overall length of 2.5 inches and a projection of 0.100 inches, this tool is built for controlled, close-tolerance grooving work. Machinists and tool-and-die professionals install this type of tool on lathes and boring mills where accurate groove placement is critical to part function and assembly integrity.
This grooving tool is used in machining operations requiring internal retaining ring grooves in holes with a minimum diameter of 0.370 inches. It handles hole depths up to 1.25 inches, making it appropriate for a range of workpiece geometries in both production and job-shop environments. The solid carbide construction supports use in ferrous and non-ferrous materials where edge retention and dimensional consistency across a run are required.
Designed as an OEM-style replacement or direct-fit grooving tool for lathes and boring mills accepting a 3/8-inch shank boring bar or tool holder.
Installation is performed by qualified machinists following standard tooling setup procedures. Secure the shank fully in the tool holder and verify projection before cutting. Power down the machine and lock out all energy sources before changing or adjusting tooling. Follow shop-specific speeds and feeds for solid carbide grooving tools based on workpiece material.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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