Helical Solutions 81741 Corner Radius End Mill 5/16 in

Product Description

The HELICAL SOLUTIONS 81741 is a 5-flute, solid carbide corner radius end mill designed for high-performance material removal in steel and cast iron. It carries a 5/16-inch mill diameter with a 0.01-inch corner radius, a 7/16-inch length of cut, and a 2-inch overall length. The APLUS PVD coating improves wear resistance and heat resistance during demanding cuts. With a variable-pitch flute design and centercutting capability, this tool handles both roughing and finishing operations in a single setup. It is intended for use with high-precision toolholders and is well suited for CNC machining applications where chatter reduction and surface finish quality are priorities.

This end mill targets machining of steel and cast iron as primary workpiece materials, with secondary capability in stainless steel, non-ferrous metals, superalloys, titanium, and hard materials. It belongs to the HEV-5 series, which is built around variable-pitch geometry to suppress vibration during aggressive cuts. The straight-cylindrical shank with h6 tolerance fits standard precision collets and shrink-fit holders. This tool is appropriate for job shop, production machining, mold and die, and general metalworking environments where a stub-length profile is preferred for rigidity.

Key Features

• 5-flute variable-pitch geometry reduces chatter and harmonic vibration
• APLUS PVD coating for extended tool life in ferrous and hard material applications
• 0.01-inch corner radius protects cutting edge and improves workpiece corner durability
• Centercutting design allows plunge entry and ramping operations
• Solid carbide construction delivers stiffness and heat resistance at elevated feed rates
• 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 steel and cast iron; secondary materials include stainless steel, non-ferrous metals, superalloys, titanium, and hard materials. Part of the HELICAL SOLUTIONS HEV-5 series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the toolholder and spindle are clean and free of debris before seating the shank. Torque retention screws or collet nuts to toolholder manufacturer specifications. Verify runout with a dial indicator before cutting; maximum TIR for this tool is 0.0005 inches.