Accupro 12180842 Corner Radius End Mill 1/2 in 7 Flute

Product Description

The ACCUPRO 12180842 is a solid carbide corner radius end mill designed for high-performance milling operations in ferrous and non-ferrous materials. It features a 1/2 inch diameter with a 1-1/4 inch length of cut and a 0.02 inch corner radius that reduces edge chipping and extends tool life in profiling and finishing passes. The 7-flute geometry increases chip load capacity and surface finish quality compared to standard 4- or 5-flute tools. An nACRo coating provides thermal resistance and lubricity, making this tool well-suited for hardened steels and demanding alloys. Machinists and tool-and-die professionals install this end mill in CNC machining centers where tight tolerances and fine surface finishes are required.

This end mill is intended for use in CNC vertical and horizontal machining centers performing roughing, semi-finishing, and finishing operations. The single-end, centercutting design allows for plunge entry as well as conventional and climb milling. The right-hand flute direction and right-hand cutting geometry are standard for most CNC milling applications. The variable index flute spacing reduces harmonic vibration during cutting, which is particularly beneficial in long-reach or slender-workpiece setups. This tool is appropriate for job shops, mold and die work, and precision component manufacturing where corner integrity and dimensional accuracy are critical.

Key Features

• 7-flute design increases material removal rate and improves surface finish in finishing passes
• 0.02 inch corner radius reduces stress concentration at part edges and extends tool life
• nACRo coating provides high thermal stability and wear resistance for hardened steels and alloys
• Variable index flute spacing minimizes chatter and vibration during aggressive cuts
• Centercutting capability allows direct plunge entry without a pre-drilled hole
• Micrograin solid carbide substrate delivers hardness and edge retention under high cutting loads

Compatibility

Designed as an OEM-style replacement or direct-use tool for CNC machining centers accepting 1/2 inch straight shank end mills with standard ER or end mill holders.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is placed in an E-stop or lockout state before changing tooling. Seat the shank fully in the holder to the recommended gauge line and torque the collet nut or set screw per the toolholder manufacturer specification. Inspect the corner radius and cutting edges for chips or damage before each use, as carbide is brittle and sensitive to impact.