Helical Solutions 59876W Corner Radius End Mill 1/2 in 5 Flute

Product Description

The HELICAL SOLUTIONS 59876W is a solid carbide corner radius end mill designed for high-performance material removal in stainless steel, superalloys, and titanium. It features a 1/2 inch mill diameter, a 1 inch length of cut, and a 0.03 inch corner radius that reduces edge chipping and extends tool life at workpiece corners. The five-flute, variable-pitch geometry minimizes harmonic vibration during aggressive cuts, supporting both roughing and finishing operations in a single tool. A Tplus PVD coating enhances wear resistance and heat tolerance. The 3 inch overall length and 1/2 inch Weldon flat shank make it compatible with high-precision toolholders used in CNC machining centers.

This end mill is built for machinists and toolroom operators working in demanding materials, particularly stainless steel grades and high-temperature alloys including titanium and superalloys. It is suited for milling slots, pockets, and profiles where corner integrity and surface finish matter. The centercutting geometry allows plunge entry, adding versatility in complex machining programs. Secondary applications include non-ferrous metals and hard materials. The Weldon flat shank seats securely in side-lock toolholders, reducing pullout risk during high-load cuts typical in aerospace, medical, and energy-sector part production.

Key Features

• 5-flute variable-pitch design reduces chatter and harmonic vibration in difficult-to-machine alloys
• 0.03 inch corner radius minimizes stress concentration and corner chipping at workpiece edges
• Tplus PVD coating provides elevated wear resistance and thermal protection for stainless steel and superalloy cuts
• Centercutting geometry enables direct plunge entry without a pre-drilled starter hole
• Weldon flat shank provides positive drive engagement and reduced pullout in side-lock toolholders
• Right-hand cut and right-hand helical flutes for standard CNC spindle compatibility

Compatibility

Designed for use with high-precision toolholders. Primary workpiece materials are stainless steel, superalloys, and titanium (ISO material codes M and S). Secondary workpiece materials include non-ferrous metals and hard materials (ISO codes N and H). Part of the HELICAL SOLUTIONS HEV-5 series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before mounting or removing the end mill. Seat the Weldon flat shank fully into the toolholder bore and tighten the set screw against the flat to the toolholder manufacturer's specification. Verify runout does not exceed the 0.0005 inch TIR maximum before beginning a cut, as excessive runout accelerates edge wear and can damage the workpiece.