Kennametal 6767674 Corner Radius End Mill 3/4 in 6 Flute

Product Description

The KENNAMETAL 6767674 is a solid carbide corner radius end mill engineered for demanding metal removal and finishing operations. Built on the KOR6 platform, it features six flutes, a 0.75 inch mill diameter, and a 0.06 inch corner radius that reduces stress concentrations at the cutting edge and extends tool life in high-hardness materials. The AlTiN PVD coating delivers thermal resistance and oxidation resistance at elevated cutting temperatures. The high helix angle promotes efficient chip evacuation, keeping the cut clean during deep-flute passes. A Safe-Lock shank configuration provides pull-out resistance in high-feed and high-speed applications.

The 6767674 is intended for finishing passes on ferrous and difficult-to-machine materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials. With a 2.25 inch length of cut and 5 inch overall length, it suits extended-reach pocketing, shoulder milling, and contour finishing on CNC machining centers in both job-shop and production environments. The close pitch and six-flute geometry support smooth surface finishes at higher feed rates.

Key Features

• Six-flute solid carbide construction with submicron carbide grade for rigidity and edge retention
• AlTiN PVD coating for thermal and oxidation resistance in dry and semi-dry cutting
• 0.06 inch corner radius reduces cutting-edge chipping and improves workpiece surface finish
• Safe-Lock shank type resists axial pull-out in aggressive cutting conditions
• Right-hand cut, right-hand spiral, centercutting — supports plunge entry and ramping
• KOR6 series design optimized for steel, stainless steel, cast iron, superalloys, titanium, and hard materials

Compatibility

Compatible with HC 1/2 through HC 1 1/4 hydraulic sleeves in inch bore configurations, HC 20M through HC 32M hydraulic sleeves metric with inch bores, HC-HSK Form A toolholders, and Hydraulic Chuck Standard Line Inch KM63XMZ. Designed for use in CNC machining centers with 3/4 inch bore hydraulic or Safe-Lock toolholding systems.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician following the toolholder manufacturer torque and clamping specifications. Confirm the Safe-Lock shank is fully seated and engaged in the toolholder drive slots before operation. Inspect the corner radius and cutting edges for chips or damage prior to each use; do not run a damaged end mill. Always verify spindle speed, feed rate, and depth of cut against KENNAMETAL application data for the specific workpiece material before starting the cut.