Accupro 12176651 Corner Radius End Mill 0.2813 in 3 Flute

Product Description

The ACCUPRO 12176651 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. It features a 0.2813-inch diameter cutting edge with a 0.02-inch corner radius that reduces stress concentration at the tool tip and extends edge life. The 3-flute geometry with a 35-degree helix angle promotes efficient chip evacuation and a smooth surface finish. A TiCN coating adds surface hardness and heat resistance, making this tool suitable for higher-speed applications. The single-end, centercutting design allows plunge entry and full slot milling. Machinists and tool-and-die professionals use this end mill in CNC machining centers and manual knee mills.

This end mill is well suited for finishing passes, profiling, and contour milling in production shop and job shop environments. The corner radius geometry is commonly specified on mold and die work, aerospace components, and precision fixture parts where sharp internal corners must be avoided. The right-hand flute direction and right-hand cutting rotation match standard spindle configurations on most CNC vertical machining centers. It is a regular-length tool appropriate for general-depth pocketing and peripheral milling where extended reach is not required.

Key Features

• 0.02-inch corner radius reduces edge chipping and stress risers at tool corners
• TiCN coating provides increased surface hardness and improved wear resistance over uncoated carbide
• 3-flute, 35-degree helix balances chip evacuation with cutting stability
• Centercutting design permits direct plunge entry without a pre-drilled pilot hole
• Micrograin solid carbide substrate maintains dimensional stability under thermal load
• Single-end configuration with 5/16-inch shank fits standard ER and Weldon tool holders

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide end mill for CNC machining centers and manual mills accepting a 5/16-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the tool from its holder. Use a calibrated torque wrench on set-screw holders and confirm runout with a dial indicator before the first cut. Follow applicable OSHA and machine-builder guidelines for tool holding, speeds, and feeds.