Helical Solutions 43589 Corner Radius End Mill 0.625in 4 Flute

Product Description

The HELICAL SOLUTIONS 43589 is a solid carbide corner radius end mill designed for high-performance metal removal in both roughing and finishing operations. It features a 0.625-inch mill diameter, a 0.1250-inch corner radius, and four flutes with a variable pitch and right-hand cutting direction. The tool is finished with an APLUS PVD coating, which improves wear resistance and extends tool life in ferrous materials. At 3.5 inches overall length with a 1.625-inch length of cut, it fits standard toolholding setups. Licensed HVAC techs and machinists working in precision environments will find this tool well-suited to demanding tolerances, with a maximum TIR of 0.0005 inches.

This end mill is built for cutting steel, cast iron, and related ferrous alloys, including low-alloy steel, medium alloy steel, tool steel, and cast iron. It is a single-end tool in the HSV-4 series, intended for use in high-precision toolholders. The 0.625-inch straight cylindrical shank with h6 tolerance ensures consistent runout when seated in a collet or shrink-fit holder. Typical applications include die and mold work, part profiling, and finishing passes on ferrous workpieces in CNC machining centers.

Key Features

• 0.1250-inch corner radius with a tight tolerance of -0.0020 to 0.0020 inches for repeatable edge geometry
• APLUS PVD coating rated for steel and cast iron - improves surface hardness and heat resistance at the cutting edge
• Variable pitch flute spacing reduces harmonic chatter during aggressive cuts
• Right-hand flute direction and right-hand cutting for standard CNC spindle use
• Maximum TIR of 0.0005 inches supports tight-tolerance finishing work
• Solid carbide construction provides stiffness and wear resistance over high-speed tool steel alternatives

Compatibility

Designed for use with high-precision toolholders. Primary workpiece materials are low-alloy steel, medium alloy steel, tool steel, and cast iron. Part of the HSV-4 series from HELICAL SOLUTIONS.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Seat the shank fully into a high-precision collet or shrink-fit holder and verify runout before cutting. Power down and lock out the spindle before tool changes. Do not exceed the recommended length of cut of 1.625 inches - extending engagement beyond this depth increases deflection and can damage the cutting edge.