Accupro 72056054 Corner Radius End Mill 1/4 in 6 Flute

Product Description

The ACCUPRO 72056054 is a solid carbide corner radius end mill designed for high-performance milling in demanding materials. Built to a 1/4 inch (0.2500 inch) diameter with a 0.0600 inch corner radius, it features six flutes with a variable helix and variable index geometry. The AlTiN+ coating provides elevated heat resistance and extended tool life at cutting speeds typical of high-temperature alloy work. This is a single-end, center-cutting tool with right-hand flute direction and right-hand cutting action. It is installed and used by machinists and CNC operators in precision metalworking environments.

This end mill is engineered for primary use in high-temperature alloys, classified under workpiece material code S. That includes nickel-based superalloys, titanium, and similar difficult-to-machine materials common in aerospace, medical, and energy-sector component manufacturing. The 1-1/4 inch length of cut and 3 inch overall length make it well suited for moderate-depth pocket milling, slotting, and profiling operations where a 1/4 inch shank toolholder is in use.

Key Features

• Six-flute variable helix design reduces harmonics and chatter in high-temp alloy cuts
• Variable index spacing distributes cutting forces evenly across the flute set
• AlTiN+ coating delivers oxidation resistance and hardness at elevated cutting temperatures
• 0.0600 inch corner radius protects the cutting edge and improves surface finish at part corners
• Center-cutting geometry allows plunge entry without a pre-drilled start hole
• Solid carbide construction provides rigidity and wear resistance over extended run times

Compatibility

Designed for use in CNC machining centers and manual mills equipped with a 1/4 inch collet or end mill holder. Primary workpiece material designation is high-temp alloy (material code S).

Installation Notes

Installation requires a 1/4 inch precision collet or shrink-fit holder; confirm runout is within acceptable limits before starting the cut. Always power down and lock out the spindle before loading or changing tooling. Follow the machine tool manufacturer guidelines and applicable shop safety codes when setting cutting parameters for carbide end mills in high-temp alloys. Inspect the corner radius and cutting edges for chipping after each use in abrasive or work-hardening materials.