Accupro 72100449 Corner Radius End Mill 3/4 in 6 Flute

Product Description

The ACCUPRO 72100449 is a solid carbide corner radius end mill designed for high-performance milling in demanding materials. Built to the HS series specification, it carries an AlTiN+ coating that extends tool life when cutting high-temperature alloys and other abrasive workpiece materials. The 0.75 inch diameter, 6-flute geometry with variable helix and variable index design reduces chatter and improves surface finish at aggressive feed rates. With a 0.09 inch corner radius, this tool blends strength at the cutting edge with smooth transitions on milled profiles. It is a single-end, right-hand cut, centercutting tool — suited for plunge entries and full-slot or peripheral milling operations performed by machinists and tool-and-die professionals.

This end mill is targeted at shops machining high-temperature alloys (UNSPSC material code S), including nickel-based superalloys, titanium, and similar aerospace and power-generation materials. The AlTiN+ coating and variable helix geometry are well-matched to the heat and tool pressure generated in these applications. With a 2.75 inch length of cut and a 5 inch overall length on a 0.75 inch straight shank, the tool fits standard 3/4 inch collets and end mill holders on vertical machining centers and CNC mills used in production and job-shop environments.

Key Features

• AlTiN+ coating for extended tool life in high-temperature alloy and abrasive material applications
• Variable helix and variable index geometry reduces harmonic vibration and improves surface finish
• 6-flute design increases feed-per-tooth capacity and productivity compared to lower-flute-count tools
• 0.09 inch corner radius protects the cutting edge and produces a controlled radius at part transitions
• Centercutting construction enables direct plunge entry without a pre-drilled hole
• Solid carbide substrate delivers rigidity and heat resistance required for difficult-to-machine alloys

Compatibility

Designed for use in 3/4 inch collet chucks, hydraulic holders, or shrink-fit end mill holders on CNC vertical and horizontal machining centers. Primary workpiece material classification is high-temperature alloy (code S). No specific machine model compatibility is stated by the manufacturer.

Installation Notes

Installation and tool changes must be performed with the spindle fully stopped and machine in an E-stop or locked-out state per OSHA lockout/tagout procedures. Seat the 0.75 inch shank fully into the holder to the recommended gauge-line depth before torquing the retention mechanism. Verify runout at the tool tip with a dial indicator before first cut — excessive runout accelerates edge wear on carbide tools. Follow the tool manufacturer and machine builder recommendations for speeds, feeds, and coolant strategy when cutting high-temperature alloys.