Accupro 12183231 Corner Radius End Mill 1/4 in 4 Flute

Product Description

The ACCUPRO 12183231 is a solid carbide corner radius end mill designed for precision milling operations in metal fabrication and machining environments. With a 1/4 inch mill diameter and a 0.06 inch corner radius, this tool produces controlled fillets and reduces stress concentrations at part corners. The 4-flute geometry supports efficient chip evacuation while maintaining surface finish quality. At 4 inches overall length with a 1-1/2 inch length of cut, it handles deeper reach applications where standard-length end mills fall short. This tool is installed and operated by machinists and CNC programmers working in job shops, production machining, and tool rooms.

This end mill is suited for profiling, slotting, and peripheral milling in ferrous and non-ferrous materials. The extra-long length type makes it appropriate for cavity work, deep pocket milling, and applications requiring extended reach without sacrificing rigidity. The bright/uncoated finish allows use across a broad range of base materials where coating chemistry is not required or preferred. Single-end construction means the tool is replaced rather than re-indexed at end of life. Right-hand cutting direction and right-hand flute direction are standard for conventional CNC machining center setups.

Key Features

• 0.06 inch corner radius for consistent fillet generation and reduced corner chipping
• Micrograin solid carbide construction for wear resistance and dimensional stability
• 4-flute spiral design balances material removal rate with surface finish
• Centercutting capability allows plunge entry directly into workpiece material
• Extra-long 4 inch OAL with 1-1/2 inch LOC for extended reach applications
• Bright/uncoated finish compatible with a wide range of workpiece materials

Compatibility

Designed as a direct-fit replacement or working tool for CNC machining centers and manual mills accepting a 1/4 inch shank diameter collet or end mill holder.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator following the machine tool manufacturer guidelines for tool holding and runout limits. Ensure the spindle is fully stopped and the machine is in a safe state before loading or removing the end mill. Use a properly sized collet or end mill holder rated for 1/4 inch shank tooling, and verify tool projection and overhang against the application requirements before cutting. Follow shop-standard speeds and feeds for solid carbide tooling in the target workpiece material.