Accupro 12178711 Corner Radius End Mill 1/2 in 7 Flute

Product Description

The ACCUPRO 12178711 is a solid carbide corner radius end mill designed for high-performance milling in demanding machining applications. With a 1/2 inch cutting diameter and a 0.02 inch corner radius, it produces controlled edge breaks and radius profiles on ferrous and non-ferrous workpieces. Seven flutes and a 37-degree helix angle promote efficient chip evacuation and surface finish quality at elevated feed rates. The AlTiN coating extends tool life in high-heat cutting environments including hardened steels and stainless alloys. Machinists and CNC operators in job shops, aerospace, and general precision machining install this tool in standard 1/2 inch toolholders.

This end mill is suited for side milling, slotting, and profiling operations where a corner radius is required to reduce stress concentrations at part edges. The centercutting geometry allows plunge entry, and the right-hand spiral flute direction is compatible with conventional CNC machining center setups. With a 1-1/4 inch length of cut and a 3 inch overall length, it handles moderate-depth cavities and contoured profiles in production and prototype environments alike. The variable index flute spacing helps suppress chatter during aggressive cuts.

Key Features

• 0.02 inch corner radius for consistent edge breaking and radius profiling
• 7-flute geometry supports high feed rates and improved surface finish
• AlTiN coating provides oxidation resistance and extended tool life in high-temperature cuts
• 37-degree helix angle promotes smooth chip flow and reduced cutting forces
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Variable index flute spacing reduces harmonic chatter during heavy milling passes
• Micrograin solid carbide substrate delivers rigidity and wear resistance

Compatibility

Designed as a direct-fit replacement or standard tooling choice for CNC machining centers and manual mills using 1/2 inch collets, end mill holders, or hydraulic chucks requiring a single-end corner radius end mill.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully powered down and the machine is in an e-stop or lockout state before changing tooling. Seat the 1/2 inch shank fully into the holder and torque the retention mechanism per the toolholder manufacturer specification. Verify runout with a dial indicator before beginning the cut cycle, and confirm feed and speed parameters match the workpiece material and depth of cut.