Accupro 12183490 Corner Radius End Mill 1/4 in 4 Flute Altin

Product Description

The ACCUPRO 12183490 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. It features a 0.25 inch mill diameter, a 1 inch length of cut, and a 0.02 inch corner radius that reduces stress concentration at the cutting edge and extends tool life in demanding applications. The 40-degree helix angle promotes smooth chip evacuation and improves surface finish. An AlTiN coating provides high-temperature resistance and hardness, making this end mill well suited for cutting hardened steels, stainless steels, and high-temp alloys. It is installed and operated by machinists and CNC programmers on vertical and horizontal machining centers.

This end mill is intended for use in production and job-shop environments where long-reach cuts and tight corner radii are required. The single-end, centercutting design allows for plunge milling as well as peripheral cuts. The right-hand flute direction and right-hand cutting action are standard for conventional CNC milling setups. The long-length configuration and 4-inch overall length accommodate deeper pockets and extended-reach applications where standard-length tools cannot reach.

Key Features

• Solid carbide micrograin construction for rigidity and wear resistance
• AlTiN coating for elevated heat resistance in dry and semi-dry cutting
• 0.02 inch corner radius reduces chipping and extends tool life at the cutting edge
• 40-degree helix angle promotes efficient chip evacuation and smooth surface finish
• Centercutting design allows direct plunge entry without a pre-drilled hole
• 4-flute configuration balances material removal rate with chip clearance

Compatibility

Designed as a standard 1/4 inch shank corner radius end mill compatible with collet chucks, end mill holders, and shrink-fit tooling systems accepting 1/4 inch straight shanks on CNC machining centers and manual mills.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholding specifications. Ensure the spindle is fully stopped and the machine is in a safe state before inserting or removing the tool. Confirm shank seating depth meets the toolholder minimum engagement requirement to prevent pullout under load. Do not exceed the tool's rated cutting parameters for the workpiece material.