Accupro 312015 Corner Radius End Mill 1/8 in 5 Flute

Product Description

The ACCUPRO 312015 is a solid carbide corner radius end mill designed for precision milling operations where edge integrity and extended tool life are critical. The 1/8 inch diameter cutter features five flutes, a 38-degree helix angle, and an AlCrTiN coating that provides high heat resistance and wear protection in demanding cutting environments. With a variable index geometry and extended reach design, this end mill handles finishing passes and tight-tolerance profiling in ferrous and non-ferrous materials. It is single-ended and center-cutting, allowing plunge entry. Installation and use are performed by machinists and CNC operators in production and job-shop settings.

This end mill is suited for CNC machining centers and manual mills requiring a small-diameter, long-reach tool. The 3/16 inch length of cut and 1/2 inch reach length make it effective for slotting and profiling in confined or deep-pocket geometries. The 0.010 inch corner radius reduces stress concentration at the cutting edge and improves surface finish at part corners. The right-hand flute direction and right-hand cutting orientation are standard for conventional CNC spindle setups. Micrograin carbide construction supports precise, repeatable cuts in hardened and abrasive workpiece materials.

Key Features

• AlCrTiN coating for elevated heat and oxidation resistance during high-speed cutting
• Five-flute design increases feed rate capability compared to standard two- or four-flute end mills
• Variable index flute spacing reduces harmonic chatter during finish milling
• Extended reach with 1/2 inch reach length and 0.118 inch neck diameter for deep-pocket access
• Center-cutting geometry allows direct plunge entry without a pre-drilled hole
• Micrograin solid carbide substrate delivers rigidity and edge sharpness retention

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for CNC machining centers and manual mills accepting a 1/8 inch straight shank, Series HS designation.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Secure the shank in a collet or end mill holder rated for the 1/8 inch shank diameter and torque the retention device per the toolholder manufacturer specifications. Verify spindle runout with a dial indicator before engaging the workpiece, as runout directly affects tool life and surface finish on small-diameter end mills. Do not exceed the tool manufacturer recommended speeds and feeds for the workpiece material and coating type.