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The ACCUPRO ACC-G039-4 is a solid carbide retaining ring grooving tool designed for internal groove cutting in precision machining applications. Built from submicron-grade solid carbide, it delivers consistent performance in tight-tolerance bores where retaining ring grooves must meet exact dimensional requirements. The tool features a 3/8 inch shank diameter and cuts a groove width of 0.0400 inches. With an overall length of 2.5 inches and a projection of 0.1100 inches, it is suited for machining operations where reach and rigidity both matter. Machinists and tool-and-die professionals working on CNC lathes or manual boring setups will find this tool a direct-fit solution for internal retaining ring groove work.
This grooving tool is intended for internal bore applications requiring retaining ring grooves. It accommodates a minimum hole diameter of 0.3750 inches and supports a maximum hole depth of 0.2500 inches. Typical use cases include production machining of housings, hydraulic cylinders, pneumatic components, and any workpiece requiring a precision internal groove for snap ring or retaining ring seating. The submicron carbide grade provides wear resistance suitable for steel, cast iron, and non-ferrous materials commonly encountered in industrial and mechanical assembly work.
Designed as an OEM-style grooving tool for use in standard 3/8 inch bore tool holders on CNC lathes and manual turning centers performing internal retaining ring groove operations.
Installation is performed by qualified machinists following standard toolroom practices. Secure the shank firmly in the tool holder and verify runout before cutting. Ensure the workpiece is properly fixtured and the machine is at a complete stop before making any tool adjustments. Follow applicable shop safety standards and machine manufacturer guidelines for speeds and feeds when working with solid carbide tooling.
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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