Helical Solutions 59855 Corner Radius End Mill 1/8 in 5 Flute

Product Description

The HELICAL SOLUTIONS 59855 is a 5-flute solid carbide corner radius end mill designed for high-performance milling in demanding materials including stainless steel, superalloys, and titanium. It features a 1/8 inch (0.1250 inch) mill diameter, a 1/4 inch (0.2500 inch) length of cut, and a 0.0100 inch corner radius that reduces stress concentration at the cutting edge and extends tool life in finishing and roughing passes. The Tplus PVD coating provides enhanced wear resistance and heat dissipation suited to the elevated cutting temperatures common in these material groups. Variable index flute spacing reduces harmonic vibration during aggressive cuts. The stub-length geometry keeps the tool rigid under load, making it appropriate for precision work in tight pockets and profiling operations.

This end mill is intended for use in CNC machining centers handling stainless steel, superalloys, titanium, hard materials, and non-ferrous metals. Its centercutting design allows plunge entry, and the right-hand flute direction with right-hand cutting rotation suits standard vertical and horizontal milling setups. The stub length and straight cylindrical shank at 1/8 inch diameter make it compatible with high-precision toolholders. It is suited to both roughing and finishing material removal strategies in aerospace, medical, and industrial component machining where tight tolerances and surface finish requirements are critical.

Key Features

• 5-flute solid carbide construction for rigidity and tool life in hard-to-machine alloys
• Tplus PVD coating rated for stainless steel, superalloys, and titanium applications
• Variable index flute spacing reduces chatter and vibration during high-load cuts
• Centercutting geometry enables direct plunge entry without pre-drilling
• 0.0100 inch corner radius reduces edge chipping and improves corner blending on finished surfaces
• Stub-length profile maximizes rigidity in shallow-pocket and profiling operations

Compatibility

Designed for use with high-precision toolholders in CNC milling applications targeting stainless steel, superalloys, titanium, hard materials, and non-ferrous metals. No specific machine model compatibility was provided in the product data.

Installation Notes

Installation and operation should be performed by a qualified CNC machinist or tooling technician. Ensure the machine spindle and toolholder are powered down and at a full stop before loading or removing the end mill. Seat the straight cylindrical shank fully in a high-precision collet or shrink-fit holder to minimize runout, which is especially critical given the 0.0005 inch maximum TIR specification. Do not exceed the recommended speeds and feeds for the target workpiece material, as thermal overload will degrade the Tplus coating and shorten tool life.