Helical Solutions 83239 Corner Radius End Mill 1/8 in 4 Flute

Product Description

The HELICAL SOLUTIONS 83239 is a 4-flute solid carbide corner radius end mill designed for high-performance material removal and finishing in demanding machining applications. It features a 0.1250-inch mill diameter, a 0.5000-inch length of cut, and a 0.0100-inch corner radius that reduces stress concentration at the cutting edge. At 2.5 inches overall length with a 0.1250-inch straight-cylindrical shank, this tool fits precision toolholders used in CNC milling operations. The Tplus PVD coating extends tool life when cutting abrasive and hard materials. Variable pitch construction reduces harmonic chatter during aggressive cuts, making it suitable for both roughing and finishing passes on the same tool.

This end mill is built for machinists working with stainless steel, high-temperature alloys, superalloys, titanium, and hardened steel. Secondary applications include steel and cast iron. The HSV-4 series is used in production and job-shop CNC environments where consistent surface finish and tool life in difficult-to-machine materials are critical. Its centercutting geometry allows plunge entry, and right-hand flute direction with right-hand cutting is standard for conventional CNC vertical and horizontal mill setups requiring tight tolerance work.

Key Features

• 0.0100-inch corner radius reduces edge chipping and improves surface finish on corners
• Tplus PVD coating rated for stainless steel, high-temperature alloys, and hardened steel
• Variable pitch design dampens vibration for stable cuts at higher feed rates
• Centercutting geometry allows direct plunge milling without pre-drilled entry
• Solid carbide construction provides rigidity and heat resistance in hard-material applications
• Right-hand spiral flutes with right-hand cutting direction compatible with standard CNC mill spindle rotation

Compatibility

Designed for use with high-precision toolholders. Primary workpiece materials are stainless steel, superalloys, titanium, and hard materials (ISO material codes M, S, H). Secondary workpiece materials include steel and cast iron (ISO material codes P, K). Part of the HELICAL SOLUTIONS HSV-4 series.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Seat the shank fully into a high-precision toolholder to the specified gauge length before torquing the retention mechanism per the toolholder manufacturer specs. Verify runout does not exceed the 0.0005-inch TIR maximum before beginning a cut. Confirm spindle direction is set to right-hand rotation before initiating the program.