Accupro 12179344 Corner Radius End Mill 3/4 in 3 Flute Altin

Product Description

The ACCUPRO 12179344 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. It features a 3/4 inch diameter, a 1-5/8 inch length of cut, and a 0.03 inch corner radius that reduces stress concentrations at part corners and extends tool life. The AlTiN coating improves heat resistance and wear performance in ferrous and hardened materials. With three right-hand spiral flutes and a 40-degree helix angle, this single-end, centercutting tool handles slotting, profiling, and plunge cutting. It is used by machinists and tool-and-die professionals in CNC machining centers and manual milling operations.

This end mill suits finishing and semi-finishing applications where a controlled corner radius is required to meet part tolerances. It performs in steel, stainless steel, cast iron, and similar ferrous alloys where the AlTiN coating provides thermal protection at elevated cutting speeds. The centercutting geometry allows direct plunge entry. Typical use cases include mold and die work, fixture components, and aerospace or industrial part profiles where sharp internal corners are not permitted by design.

Key Features

• 3/4 inch mill diameter with a 3/4 inch shank diameter for consistent rigidity and toolholder fitment
• 0.03 inch corner radius reduces stress risers and improves surface finish at part edges
• AlTiN coating provides oxidation resistance and extends tool life in ferrous materials at high cutting temperatures
• Three right-hand spiral flutes with a 40-degree helix angle for efficient chip evacuation
• Centercutting design enables direct plunge milling without a pre-drilled entry hole
• Micrograin solid carbide construction delivers hardness and edge retention in demanding applications

Compatibility

Designed for use in standard 3/4 inch collet chucks, end mill holders, or shrink-fit toolholders on CNC machining centers and manual knee mills. Confirm toolholder compatibility and shank tolerance requirements before installation.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before loading or removing the tool. Seat the shank to the recommended minimum engagement depth specified by the toolholder manufacturer. Verify runout with a dial indicator before beginning production cuts to avoid premature edge wear or chatter.