Accupro 313847 Corner Radius End Mill 1/4 in Solid Carbide

Product Description

The ACCUPRO 313847 is a solid carbide corner radius end mill designed for precision milling in demanding machining environments. It features a 1/4 inch mill diameter, a 3/4 inch length of cut, and a 4 inch overall length with an extended reach configuration. The cutting edge carries a 0.015 inch corner radius that reduces stress concentrations at part corners and extends tool life. A ZrN (zirconium nitride) coating improves wear resistance and lubricity, making this end mill well suited for ferrous and non-ferrous materials. Two right-hand spiral flutes provide efficient chip evacuation, and the centercutting geometry allows plunge entry directly into a workpiece.

This end mill is intended for use in CNC machining centers and manual milling machines where extended reach is required. The 2-1/8 inch reach length and 0.225 inch neck diameter allow access into deep pockets, slots, and contoured features without interference from the shank. The stub-length-of-cut profile combined with the extended reach makes it a practical choice for aerospace, mold and die, and general precision machining applications. It is a single-end tool sold individually.

Key Features

• ZrN coating improves wear resistance and reduces built-up edge on a wide range of workpiece materials
• 0.015 inch corner radius reduces stress risers and chip-out at milled corners
• Extended reach design with 2-1/8 inch reach length for deep-pocket and cavity work
• Centercutting geometry allows direct plunge milling without a pre-drilled entry hole
• Micrograin solid carbide construction provides rigidity and edge retention at high feeds and speeds
• Right-hand cut, right-hand flute spiral promotes consistent chip flow away from the cutting zone

Compatibility

Designed as a standard 1/4 inch shank end mill compatible with ER collet systems, end mill holders, and other toolholders accepting a 1/4 inch straight shank. No specific machine or system compatibility data was provided by the manufacturer for this part number.

Installation Notes

Installation should be performed by a qualified machinist following shop-standard toolholding procedures. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Seat the shank to the minimum recommended engagement depth for the holder type in use to prevent pullout under cutting loads. Verify runout with a dial indicator after tool installation before beginning a cut, as excessive runout accelerates wear on a fine-geometry tool like this one.