Accupro 311425 Corner Radius End Mill 1/4 in 5 Flute Carbide

Product Description

The ACCUPRO 311425 is a solid carbide corner radius end mill designed for high-performance milling in demanding machining environments. Built on the HS series platform, it features a 1/4 inch diameter, a 1/2 inch length of cut, and a 2-1/2 inch overall length. The AlCrTiN coating provides thermal resistance and extended tool life at elevated cutting speeds. With five flutes, a variable index, and a 38-degree helix, this end mill delivers improved chip evacuation and reduced chatter. The 0.020 inch corner radius protects the cutting edge and produces a clean radius transition at the base of the cut. Centercutting geometry allows plunge entry into the workpiece.

The 311425 is suited for profiling, slotting, and contouring operations on ferrous and hardened materials. Its micrograin solid carbide construction handles the rigidity and heat demands of harder workpiece materials. Single-end configuration and right-hand flute direction make it a straightforward replacement or production tool for CNC vertical and horizontal milling centers. Machinists and tool-and-die professionals will find this end mill well-matched to finish milling passes and tight-tolerance profile cuts.

Key Features

• AlCrTiN coating for high-heat resistance and extended tool life
• 5-flute, variable-index design reduces chatter and improves surface finish
• Micrograin solid carbide substrate for rigidity in hard materials
• 0.020 inch corner radius protects cutting edge and produces clean radius blend
• Centercutting geometry allows direct plunge entry
• Right-hand cut, right-hand spiral flute with 38-degree helix angle

Compatibility

Designed as an OEM-style solid carbide corner radius end mill compatible with standard 1/4 inch collets and tool holders on CNC milling machines requiring a 1/4 inch shank.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Seat the 1/4 inch shank securely in a properly sized collet or end mill holder and torque the retention system per the tool holder manufacturer guidelines. Verify runout at the tool tip before commencing a cut.