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The MICRO 100 RR-039-12 is a solid carbide internal grooving tool designed to cut retaining ring grooves in bored holes. It features a 3/8-inch shank diameter and a 0.039-inch groove width, making it suitable for precision groove work in small-diameter bores. The tool has an overall length of 2.5 inches and a projection of 0.1 inches. Solid carbide construction provides rigidity and wear resistance for consistent groove geometry in ferrous and non-ferrous materials. This tool is installed in CNC lathes or manual turning centers by machinists and toolmakers performing internal groove operations.
The RR-039-12 is intended for cutting retaining ring grooves in internal bores with a minimum hole diameter of 0.375 inches. It supports a maximum hole depth of 0.75 inches, making it appropriate for shallow to moderate bore depths in production machining and job shop environments. Typical applications include creating grooves for snap rings and retaining rings in precision-machined components across industrial, automotive, and mechanical assembly contexts.
Designed as an OEM-style replacement or direct tooling solution for turning centers and CNC lathes accepting a 3/8-inch round shank grooving tool.
This tool is installed by machinists or toolmakers into a compatible toolholder or boring bar block. Ensure the shank is fully seated and clamped securely before operation. Confirm spindle speed and feed rate are appropriate for the workpiece material and tool projection before engaging the cut. Do not exceed the maximum hole depth specification of 0.75 inches to avoid tool deflection or breakage.
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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