Accupro 312902 Corner Radius End Mill 1/8 in Carbide Zrn

Product Description

The ACCUPRO 312902 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. Built from micrograin solid carbide, this single-end mill features a 1/8 inch diameter, a 1/4 inch length of cut, and a 1-1/2 inch overall length. The ZrN (zirconium nitride) coating reduces friction and extends tool life in demanding cutting conditions. The corner radius geometry measures 0.010 inches and helps reduce stress concentrations at the bottom of the cut, improving surface finish and extending tool life in slotting and profiling applications. Centercutting capability allows plunge entry into the workpiece. Machinists and CNC operators install this tool in standard 1/8 inch collets or end mill holders.

This end mill is suited for light-duty slotting, profiling, and contouring in CNC machining centers and manual mills. The 2-flute, right-hand spiral configuration with a 45-degree helix angle promotes efficient chip evacuation and smooth cutting action. It is a regular-length tool appropriate for general-purpose work where extended reach is not required. Typical applications include die and mold work, part finishing, and detailed profile cuts in metals where a clean corner radius transition is specified.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• ZrN coating reduces friction and extends tool life in production cutting
• 0.010 inch corner radius minimizes stress risers and improves surface finish
• Centercutting design allows direct plunge entry without pre-drilling
• 45-degree helix angle promotes efficient chip evacuation
• Right-hand cut and right-hand flute spiral for standard CNC and manual mill spindles

Compatibility

Designed for use in standard 1/8 inch diameter collets, end mill holders, or shrink-fit tooling systems on CNC machining centers and conventional milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down or in a safe state before changing tooling. Seat the shank fully in the collet or holder and torque the retention mechanism per the toolholder manufacturer specification. Confirm runout with a dial indicator before beginning production cuts, as excessive runout will accelerate wear on a tool of this diameter.