Harvey Tool 857105-C3 Corner Radius End Mill 0.1406 in 4 Fl

Product Description

The HARVEY TOOL 857105-C3 is a solid carbide corner radius end mill designed for precision milling in steel, stainless steel, cast iron, and non-ferrous metals. It carries a 0.1406-inch (9/64-inch) mill diameter, a 0.005-inch corner radius, and four right-hand helical flutes with a 30-degree helix angle. The cutting geometry supports both roughing and finishing operations in a single tool. An AlTiN (aluminum titanium nitride) PVD coating extends tool life in abrasive and high-temperature applications. The stub-length flute design reduces deflection in tight-tolerance work, making it well suited for CNC machining centers and precision toolpath operations in mold, die, and close-tolerance component work.

This end mill fits applications requiring a small-diameter corner radius tool where edge chipping and workpiece corner integrity are critical. The single-end, straight-cylindrical shank with a 3/16-inch (0.1875-inch) diameter accepts standard collet toolholders. The 2-inch overall length and 0.22-inch length of cut make this a stub-series tool intended for shallow-depth passes with minimal tool stick-out. Suitable for use in CNC vertical machining centers and high-speed spindle setups where runout control and rigid toolholding are in place.

Key Features

• 0.005-inch corner radius with a tolerance of plus or minus 0.001 inch for controlled edge geometry
• AlTiN PVD coating for extended tool life in ferrous and abrasive materials
• Solid carbide construction for rigidity and heat resistance in high-speed applications
• Four right-hand flutes with 30-degree helix angle for efficient chip evacuation
• Centercutting design allows plunge entry capability
• Stub-series flute length minimizes deflection in precision depth-of-cut operations

Compatibility

Designed for use with standard collet-style toolholders accepting a 3/16-inch straight-cylindrical shank. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, and composites per the manufacturer specification.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. The tool should be seated fully in a collet or precision toolholder and torqued to the toolholder manufacturer specification before use. Verify spindle runout is within acceptable limits before running at full feed and speed, as small-diameter carbide end mills are sensitive to runout-induced breakage. Coolant-through is not supported on this tool; external coolant or mist lubrication may be applied per shop practice.