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The CARMEX MFR4B1.0L15 is a solid carbide face grooving tool engineered for internal grooving operations in small-bore applications. With a 4 mm shank diameter and a 0.0400-inch groove width, this tool is built for precision work in tight bore conditions. At 2.0 inches in overall length and a 0.0600-inch projection, it provides controlled reach without sacrificing rigidity. The all-carbide construction delivers the hardness and wear resistance required for consistent, repeatable groove geometry on the shop floor. Machinists and tool-and-die professionals working on CNC lathes and turning centers are the primary users of this style of tooling.
This face grooving tool is suited for small-diameter internal grooving tasks where bore access is limited. It supports a minimum hole diameter of 0.2000 inches, making it compatible with tight-bore workpieces that demand compact tooling profiles. The maximum hole depth reaches 0.5900 inches (39/64 inch), covering common groove depths encountered in precision turned components, retaining ring grooves, and face groove features on small bores in production and job-shop environments.
Designed as an OEM-style replacement or direct-fit option for face grooving operations requiring a 4 mm shank solid carbide tool with a 0.0400-inch groove width in CNC turning and lathe applications.
Installation and setup should be performed by a qualified machinist familiar with CNC lathe or turning center tooling. Ensure the machine spindle is fully stopped and the tool holder is de-energized before inserting or removing the tool. Confirm shank clamping torque meets the tool holder specification and verify tool projection and runout before engaging a cut. Follow shop safety procedures and applicable OSHA machining guidelines when handling 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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