Accupro 313122 Corner Radius End Mill 5/16 in Solid Carbide

Product Description

The ACCUPRO 313122 is a solid carbide corner radius end mill designed for high-performance milling in ferrous and non-ferrous materials. It features a 5/16-inch cutting diameter, a 13/16-inch length of cut (0.8125 inches), and a 2-1/2-inch overall length. The micrograin solid carbide construction delivers rigidity and wear resistance, while the ZrN (zirconium nitride) coating reduces friction and extends tool life in demanding cutting conditions. The 45-degree helix angle promotes efficient chip evacuation. This tool is installed and operated by machinists and CNC tooling professionals in production and job-shop environments.

The ACCUPRO 313122 is suited for peripheral and plunge milling operations where a blended corner radius is required to reduce stress concentrations at the base of a cut. With a 0.060-inch corner radius, two flutes, and centercutting capability, it handles slotting, profiling, and ramping passes. The right-hand cutting direction and right-hand flute spiral are standard for conventional CNC mill setups. It is a single-end tool with a regular length classification and a 5/16-inch shank diameter, fitting standard ER or set-screw toolholders of the same bore.

Key Features

• Micrograin solid carbide construction for rigidity and extended tool life
• ZrN coating reduces friction and improves wear resistance in high-speed cuts
• 0.060-inch corner radius blends floor-to-wall transitions and reduces chipping risk
• 45-degree helix angle promotes aggressive chip evacuation
• Centercutting design allows direct plunge entry without a pre-drilled hole
• Right-hand cut, right-hand spiral with two flutes for clean finish in ferrous and non-ferrous stock

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for CNC and manual milling machines accepting a 5/16-inch shank diameter in standard ER collets or set-screw toolholders.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and locked out before changing tooling. Seat the shank to the minimum insertion depth recommended for the toolholder type and torque the collet nut or set screws per the toolholder manufacturer's specification. Verify runout with a dial indicator before commencing a cut, as excessive runout accelerates wear on a two-flute carbide tool.