Helical Solutions 83939 Corner Radius End Mill 3/4 in 6 Flute

Product Description

The HELICAL SOLUTIONS 83939 is a solid carbide corner radius end mill engineered for demanding material removal in superalloys and titanium. It features a 3/4 inch cutting diameter, a 0.0600 inch corner radius, and six flutes with a variable index pitch for reduced harmonics and improved surface finish. The overall length is 5 inches with a 2.75 inch length of cut, and the 3/4 inch straight-cylindrical shank is ground to an h6 tolerance for precise toolholder fitment. An APLUS PVD coating improves wear resistance and heat tolerance during high-temperature cutting operations. This end mill is rated for both roughing and finishing passes in a single tool, making it a practical choice for aerospace, medical, and energy sector machining environments.

This tool is designed for use in CNC machining centers where high-performance cutting of titanium and titanium alloys is required. The HVTI-6 series is built specifically around the challenges of cutting difficult superalloy workpiece materials, where tool life and runout control are critical. A maximum TIR of 0.0005 inches makes it well-suited for high precision toolholders. Single-end, centercut geometry allows for both plunge and conventional milling operations. Machinists working in job shops or production environments cutting aerospace-grade titanium alloys will find this tool fits standard toolholder setups without modification.

Key Features

• Solid carbide construction for rigidity and wear resistance in superalloy cutting
• APLUS PVD coating rated for high-temperature, abrasive workpiece materials including titanium
• Variable index pitch reduces chatter and harmonics during aggressive cuts
• 0.0600 inch corner radius with a tight tolerance of -0.0020 to 0.0020 inches
• Centercut geometry supports plunge entry without a pre-drilled pilot hole
• Right-hand flute direction and right-hand cutting for standard spindle operation

Compatibility

Intended for use with high precision toolholders. Optimized for cutting titanium and titanium alloys as part of the HVTI-6 series. Shank diameter is held to an h6 tolerance for consistent fitment in collet and hydraulic toolholder systems.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine spindle fully stopped and the control in a safe state. Use a high precision toolholder as specified for this series to maintain TIR within rated limits. Verify runout at the toolholder before committing to a production cut. Follow machine tool manufacturer recommendations for speeds, feeds, and coolant strategy when cutting titanium alloys.