Kennametal 6677052 Corner Chamfer End Mill 4 Flute Altin

Product Description

The KENNAMETAL 6677052 is a solid carbide corner chamfer end mill designed for high-performance material removal in ferrous and difficult-to-machine workpiece materials. It runs a 0.5 inch cutting diameter with a 1.25 inch length of cut and a 3.25 inch overall length. The tool features a 45-degree chamfer angle with a 0.020 inch chamfer width, four variable-helix flutes, and a right-hand cutting direction. An AlTiN PVD coating provides thermal resistance and wear protection at elevated cutting temperatures. The H1TE series designation from KENNAMETAL identifies this as a center-cutting, single-end tool built for aggressive roughing and finishing operations. It is installed by machinists and tooling professionals in CNC milling applications.

This end mill is suited for shouldering, slotting, ramp-down, helical interpolation, drill milling, plunging, and recessing operations. Primary workpiece materials include steel, stainless steel, cast iron, superalloys, titanium, and hard materials, corresponding to ISO material codes P, M, K, S, and H. The variable-helix, variable-index flute geometry reduces harmonic chatter during interrupted cuts and high-feed passes, making it a practical choice for both roughing and finishing passes in the same setup. The Weldon flat shank provides positive drive in standard end mill holders.

Key Features

• Solid carbide construction, material grade KCPM15, for rigidity and wear resistance in hard and abrasive materials
• AlTiN PVD coating provides oxidation resistance and hardness at elevated cutting temperatures
• Variable-helix and variable-index flute geometry reduces chatter and improves surface finish
• 45-degree chamfer angle with 0.020 inch chamfer width for consistent edge-breaking results
• Center-cutting design supports plunging, ramp-down, and helical interpolation without a pre-drilled entry hole
• Weldon flat shank ensures positive tool retention in standard Weldon-style holders
• Single-end, right-hand flute direction for conventional and climb milling in CNC setups

Compatibility

The KENNAMETAL 6677052 belongs to the H1TE series and carries catalog number H1TE4CH0500R125HB. It is designed for use in steel, stainless steel, cast iron, superalloys, titanium, and hard materials. Confirm holder bore size accepts a 0.5 inch Weldon flat shank before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Secure the Weldon flat shank in a properly sized end mill holder torqued to the holder manufacturer specification, ensuring the flat is aligned with the set screw. Power down and lock out the machine spindle before changing tooling. Do not exceed the manufacturer-recommended cutting parameters for the workpiece material and coating type, and verify runout with a dial indicator after seating the tool.