Accupro 12183070 Corner Radius End Mill 3/8 in 4 Flute Altin

Product Description

The ACCUPRO 12183070 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hardened materials. It features a 3/8 inch diameter, a 0.02 inch corner radius, and four right-hand spiral flutes with a 40-degree helix angle. The cutting edge is single-end and centercutting, allowing plunge entry directly into workpiece material. An AlTiN coating provides thermal resistance and extended tool life in high-heat cutting environments. This tool is suited for machinists and toolroom professionals running CNC mills or manual knee mills requiring tight corner geometry control.

This end mill is well suited for finishing passes and profile milling where a controlled corner radius is required to reduce stress concentrations in the part. The 1-1/8 inch length of cut and 3 inch overall length make it appropriate for moderate-depth pockets and slots in steel, stainless steel, cast iron, and similar materials. The long-length configuration provides additional reach for deeper features without sacrificing rigidity common to solid carbide construction.

Key Features

• AlTiN coating for high-temperature resistance and extended tool life in ferrous materials
• Micrograin solid carbide construction for rigidity and wear resistance
• 0.02 inch corner radius reduces stress risers and improves surface finish at part corners
• 40-degree helix angle promotes smooth chip evacuation and reduced cutting forces
• Centercutting design enables direct plunge milling without pre-drilling
• Right-hand cut and right-hand flute direction for standard CNC and manual milling setups

Compatibility

Designed as an OEM-style replacement or direct-fit cutting tool for CNC machining centers and manual milling machines accepting a 3/8 inch straight shank end mill.

Installation Notes

Installation should be performed by a qualified machinist or toolroom professional. Ensure the machine spindle and tool holder are fully de-energized and at rest before inserting or removing the end mill. Use a properly sized collet or end mill holder rated for a 3/8 inch shank diameter to ensure runout is within acceptable limits. Verify tool projection and reach before beginning any cutting operation to avoid interference with fixtures or workholding.