Kennametal 6676988 Corner Chamfer End Mill 1/8 in 4 Flute

Product Description

The KENNAMETAL 6676988 is a solid carbide corner chamfer end mill designed for precision edge preparation and multi-operation milling in demanding metalworking applications. Built to the H1TE series specification, it features a 0.125 inch mill diameter, a 0.5 inch length of cut, and a 45-degree chamfer angle with a 0.0150 inch chamfer width. The variable helix geometry, ranging from 36 to 39 degrees, reduces harmonic vibration and improves surface finish across varied cutting conditions. An AlTiN PVD coating provides thermal resistance and extended tool life when cutting ferrous and hard materials. This tool is centercutting and right-hand fluted, supporting a broad range of milling strategies. Installation and use require a qualified machinist or CNC operator.

This end mill is engineered for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials, covering ISO material categories P, M, K, S, and H. It is suited to both roughing and finishing operations and supports multiple machining strategies including shouldering, slotting, ramp-down entry, helical interpolation, drill milling, plunging, and recessing. The straight cylindrical shank at 0.125 inch diameter fits standard end mill holders and collet chucks used in vertical machining centers and CNC milling setups. It is a single-end tool with a normal pitch and a regular length profile, making it a practical choice for production environments where consistent edge chamfering and multi-function capability are required.

Key Features

• Solid carbide construction in material grade KCPM15 for rigidity and wear resistance in hard and abrasive workpiece materials
• AlTiN PVD coating provides elevated temperature resistance and reduced tool wear during high-speed ferrous cutting
• Variable helix design (36 to 39 degrees) minimizes chatter and vibration for improved surface finish
• 45-degree chamfer angle with 0.0150 inch chamfer width enables consistent, repeatable edge preparation
• Centercutting geometry supports plunging, helical interpolation, and drill milling without a pre-drilled pilot hole
• Multi-operation capability: shouldering, slotting, ramp-down, helical interpolation, plunging, and recessing in a single tool

Compatibility

Designed for use with standard 1/8 inch straight cylindrical end mill holders and collet chuck systems. Suitable for CNC vertical machining centers and manual milling machines capable of holding a 0.125 inch shank. Primary workpiece materials include steel, stainless steel, cast iron, superalloys, titanium, and hard materials as designated by ISO material codes P, M, K, S, and H.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the shank. Verify runout after clamping to minimize premature wear on this small-diameter tool. Follow the machine manufacturer and tooling OEM guidelines for speeds, feeds, and clamping torque appropriate to this tool diameter and material grade.