Kennametal 4071921 Corner Radius End Mill Solid Carbide

Product Description

The KENNAMETAL 4071921 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining applications. It features a 0.5-inch diameter with a 0.03-inch corner radius, a 1.5-inch length of cut, and a 4-inch overall length. The four-flute geometry combined with an AlTiN PVD coating delivers heat resistance and wear protection when cutting steel, stainless steel, cast iron, and hard materials. The Weldon flat shank provides positive drive in tool holders, reducing slippage under aggressive feed rates. This tool is built for both roughing and finishing passes in a single setup, making it a practical choice for machinists and tooling specialists working on CNC machining centers.

This end mill is suited for use in ferrous and hard material machining environments, including production shops and job shops running CNC vertical or horizontal mills. It is part of the HPHV series and is configured as a single-end, right-hand cut, right-hand flute tool with a high helix style and normal pitch. Extended reach geometry allows access in deeper cavities or stepped workpieces. Compatible tool holder formats listed by the manufacturer include EM-CV Form AD and EM IN-HSK Form A systems.

Key Features

• 0.03-inch corner radius reduces edge chipping and improves surface finish at workpiece corners
• AlTiN PVD coating provides thermal resistance and extended tool life in dry or semi-dry cutting
• Four-flute, right-hand spiral configuration supports both roughing and finishing in steel and hard materials
• Weldon flat shank ensures positive engagement in compatible tool holders
• Extended reach design allows machining of deeper features without tool holder interference
• Submicron solid carbide grade maintains edge integrity in abrasive and hard workpiece materials

Compatibility

Rated for primary workpiece materials including steel, stainless steel, cast iron, and hard materials (Material Grade Codes P, M, K, H). Compatible tool holder formats per manufacturer data include EM-CV Form AD and EM IN-HSK Form A.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the tool changer is in a safe state before inserting or removing the end mill. Torque the Weldon flat set screw according to the tool holder manufacturer specifications. Verify runout with a dial indicator after clamping before beginning any cutting operation.