Harvey Tool 60420-C3 Back Corner Rounding End Mill

Product Description

The HARVEY TOOL 60420-C3 is a back corner rounding end mill designed for precise edge-breaking and corner profiling on the back side of a workpiece. Built from solid carbide with an AlTiN (aluminum titanium nitride) coating, this tool handles high-temperature cutting in hardened steels, stainless, and other demanding materials. It features a 0.5mm radius (0.0200 inches), a 0.115 inch mill diameter, and three flutes for efficient chip evacuation. The right-hand cutting and right-hand flute direction make it compatible with standard CNC mill spindle rotation. Solid carbide construction delivers rigidity and wear resistance in tight-tolerance machining applications.

This end mill is used in CNC machining centers and manual mills where back edge rounding or chamfering is required on part features that cannot be accessed from the front. Typical applications include deburring back edges, creating radii on undercuts, and finishing internal shoulders. The 1/8 inch shank diameter suits collet chucks and toolholders common in precision shop environments. Its compact overall length of 1-1/2 inches suits setups with limited Z-axis clearance. Machinists in aerospace, mold-making, medical device, and general precision machining will find this geometry useful for finishing operations.

Key Features

• 0.5mm (0.0200 inches) corner radius for consistent, repeatable back-edge profiling
• AlTiN coating provides heat resistance and extended tool life in ferrous and hardened materials
• Solid carbide construction for rigidity and dimensional stability
• 3-flute design balances chip evacuation with surface finish quality
• Right-hand cut, right-hand flute direction for standard CNC spindle use
• Single-end geometry with 1/8 inch shank for broad collet compatibility

Compatibility

Designed as an OEM-style specialty back corner rounding end mill compatible with standard 1/8 inch collet chucks and toolholding systems used in CNC machining centers and manual mills.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and power isolated per shop lockout/tagout procedures. Seat the 1/8 inch shank fully and evenly in the collet before torquing the toolholder to the machine specification. Verify runout with a dial indicator before cutting, as solid carbide tools are sensitive to excessive runout. Follow the tool manufacturer and machine OEM feeds-and-speeds guidelines for the specific workpiece material and do not exceed the recommended depth of cut for this diameter.