Walter-prototyp 6579306 Square End Mill 0.188 4 Flute Carbide

Product Description

The WALTER-PROTOTYP 6579306 is a solid carbide square end mill built for precision material removal in demanding machining applications. This single-end, center-cutting tool features a 0.1880-inch cutting diameter, a 0.625-inch length of cut, and a 50-degree helical flute geometry that promotes efficient chip evacuation and reduces cutting forces. The TiAlN coating extends tool life in high-temperature cutting environments, making this end mill well suited for hardened steels, stainless alloys, and cast iron. With four right-hand helical flutes and a 0.25-inch straight cylindrical shank, this tool is sized for standard milling chucks and collet systems. It belongs to the MC326 series long-length line and is installed by machinists and tool-and-die professionals.

This end mill is designed for use in vertical machining centers, CNC milling machines, and manual knee mills where a long-reach, small-diameter cutting tool is required. The 3-inch overall length and 1.120-inch reach length provide access to deeper pockets and stepped features without requiring extended-reach adapters. The 0.25-inch shank diameter fits a wide range of standard ER and TG collet systems. Right-hand cut and right-hand flute orientation match conventional milling setups. This tool is appropriate for finishing and semi-finishing passes in both ferrous and non-ferrous materials where TiAlN coating performance is leveraged.

Key Features

• 0.1880-inch cutting diameter with h10 diameter tolerance for close-tolerance slot and contour work
• TiAlN coating provides thermal resistance and extended tool life in high-speed ferrous cutting
• 50-degree helix angle promotes smooth chip flow and reduces radial cutting forces
• Center-cutting geometry allows plunge entry as well as standard peripheral milling
• Long-series MC326 designation with 1.120-inch reach length for deep-pocket access
• Solid carbide construction delivers rigidity and wear resistance versus HSS alternatives

Compatibility

Designed as an OEM-style replacement and direct-fit cutting tool for CNC and manual milling machines accepting a 0.25-inch straight cylindrical shank with h5 shank tolerance, consistent with standard ER collet and milling chuck systems.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholding torque and runout specifications. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the collet or chuck to the recommended gauge line depth before tightening. Verify runout with a dial indicator prior to cutting to protect both the tool and the workpiece.