Kennametal 5351904 Corner Radius End Mill 3/4 in 6 Flute

Product Description

The KENNAMETAL 5351904 is a solid carbide corner radius end mill designed for high-performance finishing in ferrous and difficult-to-machine materials. It carries a 3/4-inch mill diameter, a 0.03-inch corner radius, and six flutes arranged in a right-hand spiral with a high helix angle of 38 degrees. The AlTiN PVD coating provides oxidation resistance and thermal hardness retention at elevated cutting temperatures. With a 1.625-inch length of cut and a 4-inch overall length, this tool suits deep-cavity finishing passes where tool deflection and edge wear are primary concerns. The Safe-Lock shank design resists pullout under aggressive feed conditions.

This end mill is intended for finishing operations on steel, stainless steel, superalloys, and hard materials. It is used in CNC machining centers running close-pitch toolpaths on mold cavities, aerospace components, and precision mechanical parts. The centercutting geometry allows plunge entry where required. Compatible toolholders include HC 1/2 through HC 1 1/4 hydraulic sleeves with inch bores, HC 20M through HC 32M hydraulic sleeves metric with inch bores, HC-HSK Form A holders, and Hydraulic Chuck Standard Line Inch KM63XMZ. Its 3/4-inch shank diameter fits standard collet and hydraulic chuck assemblies in that bore range.

Key Features

• Solid carbide submicron-grade substrate for rigidity and edge retention in hard materials
• AlTiN PVD coating rated for steel, stainless steel, superalloys, and hard material applications
• Six-flute close-pitch configuration optimized for finishing material removal
• Safe-Lock shank geometry resists axial pullout in high-feed hydraulic chuck setups
• 0.03-inch corner radius reduces stress concentration and extends edge life on corners
• Centercutting design permits axial plunge entry without a pre-drilled pilot hole

Compatibility

Designed for use with HC 1/2 through HC 1 1/4 hydraulic sleeves with inch bores, HC 20M through HC 32M hydraulic sleeves metric with inch bores, HC-HSK Form A holders, and Hydraulic Chuck Standard Line Inch KM63XMZ. Part of the KENNAMETAL UJDE series.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. The machine spindle must be fully stopped and the tool carousel must be in a safe state before inserting or removing the end mill from the holder. Verify that the Safe-Lock drive keys in the holder align with the shank flats before torquing the clamping screws to the holder manufacturer specification. Confirm runout with a dial indicator before production cutting to protect both the tool and the workpiece.