Accupro 310212 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The ACCUPRO 310212 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. Featuring a 3/8-inch diameter with a 0.060-inch corner radius, this single-end mill runs a 4-flute, right-hand spiral configuration with a 38-degree helix angle for efficient chip evacuation. The AlCrTiN coating provides high thermal resistance and extended tool life in demanding cut conditions. With a 1/2-inch length of cut and 2-inch overall length, this tool is suited for CNC machining centers and manual mills operated by machinists and toolroom professionals.

This end mill is intended for use in ferrous and high-temp alloy milling applications where edge integrity and corner geometry are critical. The centercutting design allows plunge entry, expanding its usefulness in pocketing and slotting operations. The straight cylindrical shank at 3/8 inch diameter fits standard collet and end mill holders. The variable index flute spacing reduces harmonic chatter during aggressive cuts, making it well suited for finishing and semi-finishing passes in production and job shop environments.

Key Features

• AlCrTiN coating for high-heat resistance and extended tool life
• 4-flute, right-hand spiral with 38-degree helix for efficient chip removal
• Centercutting design allows direct plunge entry
• Variable index flutes reduce chatter during aggressive cuts
• Micrograin solid carbide construction for rigidity and edge retention
• 0.060-inch corner radius with tight tolerance of plus 0.002 to minus 0.002 inches

Compatibility

Designed as an OEM-style replacement and standard production end mill for use in 3/8-inch collet chucks, ER collet systems, and straight-bore end mill holders on CNC machining centers and knee mills.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and the machine is in a safe lockout state before changing tooling. Verify collet or holder bore matches the 3/8-inch shank diameter before seating. Confirm runout with a dial indicator after clamping to prevent premature tool wear or workpiece damage.