Accupro 317257 Corner Radius End Mill 3/4 in 10 Flute Carbide

Product Description

The ACCUPRO 317257 is a 10-flute, solid carbide corner radius end mill designed for high-performance milling in demanding machining environments. It features a 3/4-inch diameter, a 0.0900-inch corner radius, and an AlCrTiN coating that provides heat and wear resistance at elevated cutting speeds. The 40-degree helix angle promotes efficient chip evacuation, while the micrograin carbide substrate supports rigidity and edge retention. With a 1-inch length of cut and 4-inch overall length, this tool suits deep-profile and finishing passes on hardened steels, stainless alloys, and other difficult-to-machine materials. Licensed machinists and CNC tooling technicians are the primary users.

This end mill is suited for precision milling operations in both production and job-shop settings. The corner radius geometry reduces edge chipping compared to sharp-corner end mills, making it effective for semi-finish and finish passes on pocketing, profiling, and contouring operations. The single-end, centercutting design allows plunge entry and versatile tool paths. It is appropriate for use on CNC machining centers running high-speed or hard-material programs where tool longevity and dimensional accuracy are required.

Key Features

• 10-flute design increases feed rates and improves surface finish on finish-milling passes
• AlCrTiN coating provides oxidation resistance and extended tool life in dry or minimal-lubrication cutting
• 0.0900-inch corner radius reduces stress concentration and extends edge life in profiling operations
• Micrograin solid carbide substrate delivers rigidity and resistance to deflection
• 40-degree helix angle promotes smooth chip flow and reduced cutting forces
• Centercutting capability allows direct plunge entry without pre-drilling

Compatibility

Designed for use in standard straight-cylindrical 3/4-inch collet or end mill holders on CNC machining centers. No specific OEM system compatibility was stated in the product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the 3/4-inch straight-cylindrical shank fully into the holder to the recommended gauge-line depth and torque the retention mechanism per the toolholder manufacturer specifications. Verify runout at the cutting diameter with a dial indicator before beginning a production run, as excessive runout accelerates edge wear and reduces dimensional accuracy.