Helical Solutions 31017 Corner Radius End Mill 1/8 in 4-flute

Product Description

The HELICAL SOLUTIONS 31017 is a 4-flute, solid carbide corner radius end mill designed for precision milling in ferrous and hard materials. It features a 1/8 inch diameter with a 0.0100 inch corner radius and a 1/4 inch length of cut, making it well suited for stub-reach finishing and light roughing passes where edge integrity and tight tolerances matter. The APLUS PVD coating reduces heat buildup and extends tool life in demanding cuts. Variable pitch geometry minimizes chatter and improves surface finish at higher feed rates. Licensed machinists and CNC programmers working in job shop or production environments install and operate this tooling.

This end mill is rated for use in low-alloy steel, medium alloy steel, tool steel, and cast iron. The stub-length configuration and straight cylindrical shank make it a practical choice for 3-axis and 4-axis CNC machining centers where minimal overhang is preferred. It is centercutting, allowing plunge entry, and the right-hand flute direction suits standard spindle rotation. High-precision toolholders are recommended to maintain runout within the stated TIR maximum of 0.0005 inch.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• APLUS PVD coating rated for steel and cast iron applications
• Variable pitch design reduces harmonic chatter during cuts
• 0.0100 inch corner radius with a tight tolerance of -0.0020 to 0.0020 inch
• Centercutting geometry allows direct plunge entry without a pilot hole
• Right-hand cut and right-hand flute direction for standard spindle use

Compatibility

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

Installation Notes

Installation and operation should be performed by qualified machinists or CNC technicians. Always power down and lock out the spindle before changing tooling. Seat the shank fully in a high-precision collet or toolholder to minimize runout; the stated TIR maximum is 0.0005 inch. Verify spindle direction, feed rate, and depth of cut against the material and machine specifications before starting a cut.