Accupro 72058357 Corner Radius End Mill 5/16 in 6 Flute

Product Description

The ACCUPRO 72058357 is a single-end, solid carbide corner radius end mill designed for high-performance milling in demanding applications. The tool measures 0.3125 inches in diameter with a 6-flute configuration and carries an AlTiN+ coating for extended tool life under high-heat cutting conditions. A corner radius of 0.030 inches reduces stress concentration at the cutting edge and improves surface finish on finished workpiece corners. Variable helix and variable index geometry help suppress chatter and improve chip evacuation. This end mill is installed and run by machinists and CNC programmers working in precision metal removal environments.

This end mill is engineered for cutting high-temperature alloys, including nickel-based superalloys and titanium alloys, where heat resistance and edge retention are critical. The AlTiN+ coating performs well in dry or minimal-lubrication cutting strategies common in aerospace and high-temp alloy machining. With right-hand flute direction and right-hand cutting direction, it suits standard CNC machining center spindle configurations. The 2-inch overall length and 0.3125-inch shank diameter make it compatible with standard collet and end mill holder tooling at that bore size.

Key Features

• Solid carbide construction for rigidity and wear resistance in high-temp alloy cutting
• AlTiN+ coating provides oxidation resistance and hardness at elevated cutting temperatures
• 6-flute design increases feed rate capability and improves surface finish
• Variable helix and variable index geometry reduce harmonic vibration and chatter
• 0.030-inch corner radius protects the cutting edge and improves corner geometry on the workpiece
• Center-cutting capability allows plunge entry into the workpiece

Compatibility

Designed for use in CNC machining centers with standard collet or end mill holder tooling accepting a 0.3125-inch shank diameter. Primary workpiece material designation is high-temperature alloy (material code S).

Installation Notes

Installation and tool changes should be performed with the machine spindle fully stopped and the control in a safe state. Secure the shank in a properly sized collet or end mill holder to the holder manufacturer's recommended torque specification. Verify runout with a dial indicator before cutting to protect both the tool and workpiece. Follow the cutting tool manufacturer's recommended speeds and feeds for the specific workpiece material and coating.