Accupro 12180594 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The ACCUPRO 12180594 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hardened materials. Built from micrograin carbide and coated with AlTiN (aluminum titanium nitride), it delivers thermal resistance and extended tool life in demanding cutting environments. The 0.03 inch corner radius reduces stress concentration at the cutting edge, lowering the risk of chipping during aggressive passes. With 4 flutes and a right-hand spiral, it provides efficient chip evacuation and a smooth finish. This tool is installed by machinists and CNC operators working in job shops, tool rooms, and production machining environments.

This end mill suits applications in ferrous metals, stainless steel, titanium, and hardened alloys where a radiused corner profile is required for part geometry or edge durability. The centercutting design allows plunge entry, making it adaptable for pocketing, slotting, and profiling operations. The single-end configuration and 3/8 inch shank mount directly into standard ER or milling collets and end mill holders. Variable index flute spacing helps reduce harmonic chatter during high-speed machining passes.

Key Features

• AlTiN coating provides high-temperature resistance and extended tool life in hard and abrasive materials
• Micrograin solid carbide substrate for superior wear resistance and edge retention
• 0.03 inch corner radius reduces edge chipping and improves part surface finish
• Centercutting geometry allows direct plunge entry for pocketing operations
• Variable index flute spacing reduces chatter at elevated spindle speeds
• Right-hand cut, right-hand spiral with 40-degree helix angle for efficient chip flow

Compatibility

Designed as a direct-fit replacement or new installation for CNC machining centers and manual milling machines using 3/8 inch shank toolholders, collet chucks, or end mill holders.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Mount the shank to the full depth of the collet or holder bore and torque the retention nut per the toolholder manufacturer specification. Verify runout with a dial indicator before initiating a cutting program.