Helical Solutions 82660 Corner Radius End Mill 3/4 in 7 Flute

Product Description

The HELICAL SOLUTIONS 82660 is a 7-flute, solid carbide corner radius end mill built for high-performance milling in steel, cast iron, stainless steel, and non-ferrous metals. It carries a 0.030-inch corner radius, a 0.750-inch cutter diameter, and a 2.750-inch length of cut, making it well-suited for both roughing and finishing passes in a single setup. The APLUS PVD coating extends tool life in abrasive ferrous materials. Variable pitch geometry reduces harmonics and chatter during aggressive material removal. Overall length is 5 inches with a 0.750-inch straight cylindrical shank, compatible with high-precision toolholders.

This end mill is designed for CNC machining centers running steel and cast iron components in job shop, die and mold, and production environments. Primary material applications include low-alloy steel, medium alloy steel, tool steel, and cast iron. Secondary applications cover stainless steel and non-ferrous metals. The long-reach, single-end configuration suits deep-pocket and shoulder milling operations where standard-length tools cannot reach. Right-hand cutting and right-hand spiral fluting are standard. This tool is not center-cutting and is not designed for plunge operations.

Key Features

• 7-flute variable-pitch design reduces vibration and improves surface finish during heavy cuts
• APLUS PVD coating provides enhanced wear resistance and heat dissipation in ferrous materials
• 0.030-inch corner radius protects the cutting edge and reduces stress concentration at pocket floors
• Solid carbide construction delivers rigidity and dimensional stability at high cutting speeds
• Long 2.750-inch length of cut supports deep-pocket and full-depth shoulder milling
• Straight cylindrical shank with h6 tolerance for consistent seating in high-precision toolholders

Compatibility

The 82660 is a Series HEV-7 end mill rated for use with high-precision toolholders. Primary workpiece materials are steel and cast iron (ISO material codes P and K). Secondary workpiece materials are stainless steel and non-ferrous metals (ISO codes M and N).

Installation Notes

Installation is performed by a trained CNC machinist or tooling technician. Secure the shank fully in a high-precision collet or hydraulic toolholder to the toolholder manufacturer's specified engagement depth before tightening. Verify runout does not exceed the 0.0005-inch TIR maximum before beginning a cut. Do not use this tool for plunge cutting, as it is not center-cutting.