Helical Solutions 59857 Corner Radius End Mill 3/16 in 5 Flute

Product Description

The HELICAL SOLUTIONS 59857 is a 5-flute solid carbide corner radius end mill designed for high-performance material removal in demanding machining applications. It features a 3/16 inch cutting diameter, a 9/16 inch length of cut, and a 0.0100 inch corner radius. The Tplus PVD coating enhances wear resistance and lubricity, making this tool well suited for cutting stainless steel, superalloys, and titanium. The variable pitch design reduces harmonic vibration during aggressive cuts, supporting both roughing and finishing operations in a single tool. Overall length is 2.5 inches with a 3/16 inch straight cylindrical shank.

This end mill is built for use in precision CNC machining centers where tight tolerances and surface finish quality are critical. Primary workpiece materials include stainless steel, superalloys, and titanium. Secondary applications cover non-ferrous metals and hard materials. It is a single-end, centercutting tool with right-hand flute direction and right-hand cutting direction, making it compatible with standard CNC spindle configurations. High precision toolholders are recommended for optimal runout control and tool life. This tool is typically specified by machinists and CNC programmers in aerospace, medical, and industrial component manufacturing environments.

Key Features

• 5-flute variable pitch geometry reduces chatter and supports both roughing and finishing passes
• Tplus PVD coating provides enhanced hardness and thermal resistance for stainless, superalloy, and titanium applications
• 0.0100 inch corner radius with a tight tolerance of -0.0020 to 0.0020 inch for consistent edge geometry
• Centercutting design allows plunge entry into workpiece material
• Solid carbide construction delivers rigidity and dimensional stability in high-speed cutting conditions
• Maximum TIR of 0.0005 inch supports use in high precision toolholders

Compatibility

Designed for use with high precision toolholders in standard CNC machining centers. Primary workpiece materials are stainless steel, superalloys, and titanium (material codes M and S). Secondary workpiece materials include non-ferrous metals and hard materials (material codes N and H). Part of the HELICAL SOLUTIONS HEV-5 series.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool change protocol is engaged before handling. Use a high precision toolholder to achieve the maximum TIR benefit of this tool. Verify tool projection and runout with a dial indicator before beginning a cutting program.