Harvey Tool 917110-C3 Corner Radius End Mill 1/4 in 4 Fl

Product Description

The HARVEY TOOL 917110-C3 is a solid carbide corner radius end mill designed for precision finishing operations in demanding metalworking applications. With a 0.25 inch mill diameter, a 1.25 inch length of cut, and a 0.01 inch corner radius, this tool produces clean, radiused edges while reducing stress concentrations at part corners. The 4-flute, right-hand helical geometry with a 30-degree helix angle promotes efficient chip evacuation and a smooth surface finish. An AlTiN PVD coating extends tool life in abrasive and high-temperature cutting environments. Licensed machinists and CNC programmers working in job shops, tool rooms, and production facilities are the primary users of this end mill.

This long-flute end mill is suited for finishing passes on steel, stainless steel, cast iron, non-ferrous metals, and composite materials. The 1.25 inch length of cut makes it well-suited for pocketing, profiling, and slotting operations where reach into deeper features is required. The single-end, straight-cylindrical shank mounts in standard toolholders compatible with 0.25 inch shank bores. It is part of the Harvey Tool Miniature End Mills Corner Radius Long Flute series, intended for applications where a full-radius or sharp-corner end mill is not appropriate.

Key Features

• 0.01 inch corner radius with a tolerance of plus 0.001 to minus 0.001 inches for consistent edge geometry
• AlTiN PVD coating provides heat and oxidation resistance in ferrous and abrasive workpiece materials
• Long-flute design with 1.25 inch length of cut enables reach into deep pockets and cavities
• 4-flute, right-hand cutting, helical flute configuration optimized for finishing and light material removal
• Center-cutting geometry allows plunge entry where required
• Solid carbide construction delivers rigidity and wear resistance in demanding materials

Compatibility

Designed for use with standard 0.25 inch bore toolholders. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, and composites as specified by the manufacturer for this series.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine in a full stop and lockout state before tool changes. Ensure the shank is fully seated and properly torqued in the toolholder collet or end mill holder per the toolholder manufacturer specifications. Inspect the corner radius and cutting edges for chips or damage before each use, as solid carbide tools are brittle and sensitive to side-loading or interrupted cuts at inappropriate feed rates. Follow the machine tool builder and tooling manufacturer recommendations for speeds, feeds, and coolant strategy for the specific workpiece material.