Walter-prototyp 6579294 Corner Radius End Mill 1/4 in 4 Flute

Product Description

The WALTER-PROTOTYP 6579294 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining applications. Built on the MC326 series platform, it features a 1/4 inch cutting diameter with a 0.04 inch corner radius that reduces stress concentrations at the tool tip and extends edge life. The TiAlN PVD coating provides thermal resistance and wear protection when cutting ferrous materials at elevated speeds. With 4 flutes, a high helix style, and a long-reach configuration, this tool is suited for both roughing and finishing passes in a single setup. It is centercutting and right-hand cutting with a straight cylindrical shank for standard toolholder compatibility.

This end mill is engineered for cutting steel, stainless steel, cast iron, and superalloys including titanium. The extended reach geometry makes it appropriate for deep-pocket milling, slotting, and profiling operations where standard-length tools cannot reach the workpiece. Secondary workpiece materials include hard materials, cast iron, and stainless steel. It fits standard toolholders designed for 1/4 inch straight-cylindrical shanks and is intended for use by machinists and CNC operators in job shop, aerospace, and general manufacturing environments.

Key Features

• 0.04 inch corner radius reduces edge chipping and improves surface finish on corners
• TiAlN PVD coating provides thermal resistance for dry or high-speed cutting of ferrous alloys
• High helix, 4-flute design supports both roughing and finishing in a single tool
• Extended reach with 1.583 inch reach length and 3/4 inch length of cut for deep-pocket access
• Centercutting construction allows plunge entry into workpiece material
• Right-hand flute direction with normal pitch and no chipbreaker for smooth, consistent chip flow

Compatibility

Designed for use with standard toolholders accepting a 1/4 inch straight-cylindrical shank. Compatible with steel, stainless steel, cast iron, and superalloys including titanium as primary workpiece materials, with hard materials as secondary applications.

Installation Notes

This tool should be installed by a qualified machinist or CNC operator following the toolholder manufacturer torque and runout specifications. Ensure the shank is fully seated in the toolholder collet or chuck and verify runout before cutting. Power down and lock out the machine spindle before changing tooling. Do not exceed the recommended overhang length for the application, as extended reach tools are more sensitive to deflection at aggressive feed rates.