Kennametal 4071925 Corner Radius End Mill 0.5in 4 Flute

Product Description

The KENNAMETAL 4071925 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining environments. Built to the HPHV series standard, this single-end tool features a 0.5-inch diameter cutting face with a 0.06-inch corner radius, 4 flutes, and a high-helix spiral flute geometry. The AlTiN PVD coating provides elevated heat resistance and extended tool life when cutting ferrous and hard materials. With a 1.625-inch length of cut and a 4-inch overall length, this is a long-reach tool suited for deep-pocket and side-wall milling operations. A Weldon flat shank ensures positive drive and minimal slippage under heavy cutting loads.

This end mill is rated for use on steel, stainless steel, cast iron, and hard materials, making it a general-purpose choice for mold and die work, aerospace component machining, and precision part production. The centercutting geometry allows plunge entry, and the extended reach design supports deep-cavity applications without requiring a long-reach adapter. It is compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems as noted by the manufacturer. Machinists working on CNC machining centers in job shops or production environments will find this tool at home in both roughing and finishing passes.

Key Features

• 0.06-inch corner radius reduces stress concentration and improves surface finish at part edges
• AlTiN PVD coating resists heat buildup during high-speed cuts in ferrous and hard materials
• 4-flute, right-hand spiral geometry balances chip evacuation with rigidity for both roughing and finishing
• Centercutting design permits direct plunge entry without pre-drilling
• Weldon flat shank provides positive mechanical engagement in standard end mill holders
• Extended reach with 1.625-inch length of cut supports deep-pocket and side-wall milling
• Submicron carbide grade delivers consistent edge strength across hardened and abrasive workpiece materials

Compatibility

Rated for steel, stainless steel, cast iron, and hard materials (ISO material codes P, M, K, H). Compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems per manufacturer documentation. Shank diameter tolerance of +0.00000 to -0.00043 inches ensures accurate seating in precision collets and end mill holders.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine in a locked-out state per applicable safety procedures. Confirm that the Weldon flat is properly aligned with the setscrew in the holder before torquing to the holder manufacturer's specification. Inspect the tool shank and holder bore for chips or debris before seating. Do not exceed the manufacturer's recommended depth-of-cut or feed-per-tooth parameters for the target workpiece material.