Accupro 12182555 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The ACCUPRO 12182555 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining applications. Built from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride), it delivers extended tool life and heat resistance at elevated cutting speeds. The 0.0900-inch corner radius reduces stress concentration at the cutting edge and produces consistent, repeatable radii on workpiece features. With a 3/8-inch diameter and 4-flute right-hand spiral geometry, this single-end, centercutting tool is suited for slotting, profiling, and pocket milling in ferrous and non-ferrous materials. Machinists and CNC operators in job shops and production environments are the primary users.

This end mill is intended for use in CNC machining centers and manual knee mills where tight tolerances and smooth surface finishes are required. The centercutting design allows direct plunge entry into workpiece material. Its 7/8-inch length of cut and 2-1/2-inch overall length make it well suited for shallow-to-medium depth milling passes in steel, stainless steel, cast iron, and hardened alloys where the AlTiN coating provides thermal protection. The 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces during aggressive material removal.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• AlTiN coating provides heat resistance and extended tool life in ferrous materials
• 0.0900-inch corner radius reduces edge chipping and produces clean workpiece radii
• 4-flute right-hand spiral geometry for improved surface finish and feed rates
• 40-degree helix angle promotes chip evacuation and lowers cutting forces
• Centercutting end enables direct plunge milling without pre-drilled entry holes

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for standard 3/8-inch ER collet chucks, milling chucks, and shrink-fit holders compatible with 3/8-inch shank tooling.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Secure the shank to the specified minimum engagement depth in the tool holder and verify runout with a dial indicator before beginning a cut. Follow the tool manufacturer and machine builder guidelines for speeds, feeds, and depth of cut appropriate to the workpiece material.