Accupro 313819 Corner Radius End Mill 1/4 in Solid Carbide

Product Description

The ACCUPRO 313819 is a 2-flute solid carbide corner radius end mill designed for precision milling operations requiring a radiused corner profile. It carries a 0.0900-inch corner radius and a 1/4-inch mill diameter with a 3/8-inch length of cut. The ZrN (zirconium nitride) coating improves surface hardness and heat resistance for extended tool life in ferrous and non-ferrous materials. Micrograin carbide construction supports tight tolerances and consistent cutting performance. At 2-1/2 inches overall length with an extended reach configuration, this end mill suits deep-pocket and shoulder milling where standard-reach tooling cannot access the feature.

This end mill is suited for CNC machining centers and manual mills in job shop, toolroom, and production environments. The extended reach and reduced neck diameter of 0.2375 inches allow it to reach into recessed features and pockets without interference. Right-hand cutting and right-hand flute direction make it compatible with standard spindle configurations. It is a single-end tool, centercutting, which allows direct plunge entry into the workpiece. Machinists and CNC operators working with aluminum, steel, stainless, and similar materials will find this geometry appropriate for finishing and semi-finishing passes where corner integrity is critical.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention
• ZrN coating for increased surface hardness and thermal resistance
• 0.0900-inch corner radius reduces stress concentrations at milled corners
• Extended reach with 1-1/8-inch reach length and 0.2375-inch neck diameter for deep-pocket access
• Centercutting design permits direct plunge and ramp entry
• 45-degree helix angle promotes smooth chip evacuation and reduced cutting forces

Compatibility

Designed as an OEM-style solid carbide corner radius end mill for use in standard 1/4-inch diameter collets, end mill holders, and shrink-fit toolholders on CNC machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the shank fully within the toolholder to the recommended gauge-line depth before tightening. Verify runout with a dial indicator before cutting, as excessive runout accelerates wear on a 2-flute geometry. Handle carbide tooling carefully to avoid chipping the cutting edges during setup.