Kennametal 6676277 Corner Radius End Mill 16mm 4 Flute

Product Description

The KENNAMETAL 6676277 is a solid carbide corner radius end mill designed for demanding metal removal in steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The cutter measures 16 mm in diameter with a 0.5 mm corner radius and a 24 mm length of cut. Four right-hand spiral flutes and a 36-degree helix angle deliver efficient chip evacuation across both roughing and finishing operations. An AlTiN PVD coating provides thermal resistance and extended tool life in high-heat cutting environments. The straight cylindrical shank matches the cutter diameter at 16 mm, making it compatible with standard hydraulic and collet toolholders. Licensed machinists and CNC programmers working in production shops specify this series for its submicron carbide grade and consistent performance in short-flute configurations.

The 6676277 belongs to the Kennametal H1TE series, which targets short-flute, extended-reach applications on vertical and horizontal machining centers. The 100 mm overall length with a 48.46 mm reach length and a 15.04 mm neck diameter allows clearance in deeper pockets while keeping the cutting zone close to the holder for rigidity. This centercutting geometry supports plunge entry and full-slot milling. Typical applications include contour milling, profile finishing, and semi-finish passes on hardened components and near-net-shape aerospace or die-and-mold workpieces.

Key Features

• 16 mm cutting diameter with 0.5 mm corner radius for blend radii and edge protection
• AlTiN PVD coating rated for steel, stainless steel, cast iron, superalloys, titanium, and hard materials
• Submicron solid carbide grade for wear resistance in abrasive and high-hardness workpieces
• 36-degree right-hand spiral flutes with normal pitch for balanced chip load and surface finish
• Extended-reach design with 48.46 mm reach length and reduced 15.04 mm neck diameter for deep-feature access
• Centercutting geometry allows direct plunge entry without pre-drilling

Compatibility

Designed for use with HC 1/2 to HC 1-1/4 hydraulic sleeves inch with metric bores and ER single angle standard collets. The 16 mm straight cylindrical shank seats in any toolholder accepting that shank diameter.

Installation Notes

Installation and tool changes must be performed by a qualified machinist with the machine in a fully stopped and locked-out state. Confirm holder bore size matches the 16 mm shank before tightening to prevent runout and premature tool failure. Do not exceed the toolholder manufacturer's recommended clamping torque for the holder type in use. Inspect the corner radius and cutting edges for chipping or coating wear before each setup.