Kennametal 7077722 Corner Radius End Mill 0.75 in 6 Flute

Product Description

The KENNAMETAL 7077722 is a solid carbide corner radius end mill designed for high-performance finishing operations in demanding metal-cutting applications. Part of the KENNAMETAL HA3R series, this single-end tool features a 0.75-inch mill diameter, six flutes, and an AlTiN PVD coating that extends tool life in abrasive and high-heat cutting environments. The 0.030-inch corner radius reduces stress concentration at the cutting edge, supporting consistent surface finish and extended tool engagement. It is intended for use by machinists and CNC programmers working in job shops, aerospace, and general metalworking facilities where tight tolerances and tool longevity are priorities.

This end mill is engineered for finishing cuts in steel, stainless steel, superalloys, titanium, and hard materials. The extended reach configuration, with a 2.112-inch reach length and 1.625-inch length of cut, allows access to deeper pockets and stepped features without sacrificing rigidity. The right-hand cutting direction and right-hand spiral flute geometry support conventional CNC milling setups. Compatible toolholding systems include HC-HSK Form A, Hydraulic Chuck Standard Line Inch KM63XMZ, and HC-CV Form AD, making this tool adaptable to a range of machine spindle interfaces.

Key Features

• AlTiN PVD coating for elevated heat resistance and extended tool life in hard and abrasive materials
• Six-flute close-pitch design optimized for finishing passes and smooth surface finish
• 0.030-inch corner radius reduces edge chipping and supports consistent part geometry
• Extended reach at 2.112 inches enables deep-pocket and stepped-feature access
• Centercutting capable, allowing plunge entry where required
• Submicron carbide grade provides high hardness and wear resistance for steel and superalloy applications

Compatibility

Compatible with HC-HSK Form A, Hydraulic Chuck Standard Line Inch KM63XMZ, and HC-CV Form AD toolholding systems. Designed for primary workpiece materials including steel, stainless steel, superalloys, titanium, and hard materials (ISO material codes P, M, S, H).

Installation Notes

Installation and tool changes should be performed by qualified machinists with the spindle fully stopped and machine in a safe, locked-out state per facility lockout-tagout procedures. Confirm shank seating and runout with a dial indicator before initiating a cut, as runout exceeding recommended tolerances will accelerate edge wear on a six-flute tool. Follow the toolholder manufacturer torque specifications for clamping the 0.75-inch straight-cylindrical shank. Verify spindle speed, feed rate, and depth of cut against the material-specific cutting data provided by KENNAMETAL for the HA3R series before programming the toolpath.