Kennametal 4071901 Corner Chamfer End Mill 1/2 in 4 Flute

Product Description

The KENNAMETAL 4071901 is a solid carbide corner chamfer end mill designed for high-performance material removal in demanding machining applications. Built to the HPHV series specification, this single-end tool features a 0.5000 inch mill diameter, four variable-index flutes with a medium helix, and a 45-degree chamfer angle with a 0.0200 inch chamfer width. The AlTiN PVD coating delivers thermal resistance and extended tool life when cutting ferrous and hard materials. At 2.5 inches overall length with a 0.6250 inch length of cut, this end mill is suited for precision work in both roughing and finishing operations.

This end mill is intended for use on steel, stainless steel, cast iron, and hard materials (material codes P, M, K, H). Typical applications include shouldering, slotting, ramp-down entry, helical interpolation, drill milling, plunging, and recessing. The Weldon flat shank provides secure tool holding in compatible milling chucks and holders. It is well suited for CNC machining centers in job shop, production, and tool-and-die environments where edge chamfering and multi-purpose milling operations are performed in a single setup.

Key Features

• 45-degree chamfer angle with 0.0200 inch chamfer width for consistent edge preparation
• Variable-index flute geometry reduces harmonic vibration during aggressive cuts
• AlTiN PVD coating provides thermal resistance for dry or semi-dry cutting in hard and ferrous materials
• Centercutting design enables direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute direction with normal pitch for predictable chip evacuation
• Weldon flat shank for positive engagement and reduced pull-out risk in high-feed applications

Compatibility

Designed as an OEM-style solid carbide corner chamfer end mill for use in standard 1/2 inch Weldon flat tool holders on CNC and manual milling machines. Primary workpiece materials include steel, stainless steel, cast iron, and hard materials.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the spindle is fully powered down and locked before changing tooling. Secure the Weldon flat shank in a properly sized end mill holder, torquing the set screw to the holder manufacturer's specification. Verify runout with a dial indicator before initiating a cut, and confirm feeds and speeds are appropriate for the workpiece material and machine capability.