Accupro 12178653 Corner Radius End Mill 3/8 in 5 Flute

Product Description

The ACCUPRO 12178653 is a solid carbide corner radius end mill designed for high-performance milling in ferrous and hardened materials. It features a 3/8 inch cutting diameter, a 0.015 inch corner radius, and five flutes with a right-hand spiral flute direction and 40-degree helix angle. The AlTiN coating provides heat resistance and extended tool life in demanding cutting environments. This end mill is centercutting and single-ended, making it suitable for plunge, slot, and profile milling operations. It is used by machinists and tool-and-die professionals in CNC machining centers and manual mills.

This end mill is suited for production and job-shop environments where tight corner radii and surface finish consistency are required. The variable index flute spacing reduces harmonic vibration during heavy cuts. With a 5/8 inch length of cut and 2 inch overall length, it is appropriate for shallow-to-moderate depth milling operations in steel, stainless, cast iron, and similar materials. The micrograin carbide substrate supports fine edge geometry and rigidity at elevated spindle speeds.

Key Features

• 0.015 inch corner radius reduces stress concentration at the tool tip and improves workpiece edge quality
• AlTiN coating increases heat resistance and reduces built-up edge in ferrous materials
• Five-flute design with variable index spacing for vibration damping and improved surface finish
• Right-hand cutting, right-hand spiral, centercutting geometry allows plunge entry
• Micrograin solid carbide substrate for rigidity and wear resistance
• 40-degree helix angle promotes efficient chip evacuation in medium-to-high feed rate applications

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for CNC machining centers and manual milling machines accepting a 3/8 inch straight shank.

Installation Notes

Installation should be performed by a qualified machinist. Secure the shank fully into a collet or end mill holder to the recommended gauge line before tightening. Verify spindle runout with a dial indicator before cutting to protect the corner radius tolerance. Never exceed the tool manufacturer's recommended speeds and feeds for the material being cut.