Accupro 72049455 Corner Radius End Mill 0.25in 6 Flute

Product Description

The ACCUPRO 72049455 is a solid carbide corner radius end mill designed for high-performance milling in demanding materials. With a 0.25-inch mill diameter, six flutes, and an AlTiN+ coating, it delivers heat resistance and tool life where standard end mills fall short. The 0.0100-inch corner radius reduces stress concentration at the cutting edge, extending tool life in interrupted cuts. A variable helix and variable index design reduce harmonic chatter, making it well-suited for finishing and semi-finishing passes. Licensed machinists and CNC programmers working with high-temp alloys will find this tool particularly effective in tight-tolerance applications.

This end mill is intended for use in high-temp alloy machining applications, including aerospace-grade nickel, titanium, and cobalt-chrome workpieces. The single-end configuration and right-hand cutting direction make it a standard fit for conventional vertical machining centers and CNC milling setups. The 0.375-inch length of cut and 2.0-inch overall length suit it to shallow-to-moderate-depth pocketing, profiling, and contouring operations where rigidity and vibration control are critical.

Key Features

• AlTiN+ coating provides elevated heat and oxidation resistance for dry or near-dry cutting in high-temp alloys
• Variable helix and variable index reduce chatter and improve surface finish
• Six-flute geometry increases feed rate potential compared to four-flute alternatives
• 0.0100-inch corner radius protects the cutting edge and reduces workpiece stress risers
• Solid carbide construction provides rigidity and dimensional stability in hardened and difficult-to-machine materials
• Center-cutting capable, allowing plunge entry without a pre-drilled hole

Compatibility

Designed for use in high-temp alloy (S-class) workpiece materials including nickel-based superalloys, titanium alloys, and cobalt-chrome. Fits standard 0.25-inch collet and toolholder systems on CNC vertical or horizontal machining centers.

Installation Notes

Installation and tool changes must be performed with the machine fully powered down and spindle locked. Secure the shank in a precision collet or hydraulic toolholder with adequate clamping torque per the toolholder manufacturer's specification. Verify runout at the tool tip before engaging the workpiece. Follow established speeds and feeds guidelines for the specific alloy being machined, as improper parameters will significantly reduce tool life with AlTiN+-coated carbide tooling.