Accupro 311658 Corner Radius End Mill 0.5 in 5 Flute

Product Description

The ACCUPRO 311658 is a single-end corner radius end mill designed for high-performance milling in demanding machining environments. Built from micrograin solid carbide and coated with AlCrTiN for heat and wear resistance, it handles aggressive cuts in hardened steels, stainless, and superalloys. The 0.5-inch mill diameter is paired with a 1.625-inch length of cut and a 4-inch overall length. A 38-degree helix angle and five-flute configuration improve chip evacuation and surface finish. Variable index flute spacing reduces chatter during high-speed operations. Center cutting geometry allows direct plunge entry without a pre-drilled hole.

This end mill is suited for production milling, die and mold work, and finish profiling where tight tolerances and surface quality are required. The 0.030-inch corner radius reduces stress concentration at the cutting edge and extends tool life when machining inside radii and pockets. Right-hand flute direction and right-hand cutting orientation make it compatible with standard CNC machining center setups. It is a single-quantity item appropriate for toolroom, job shop, and production floor applications.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• AlCrTiN coating extends tool life in high-heat cutting conditions
• Five flutes with variable index reduce vibration and improve finish quality
• 0.030-inch corner radius reduces edge chipping and stress concentration
• Center cutting design enables direct plunge milling without pilot drilling
• 38-degree helix angle promotes efficient chip evacuation

Compatibility

Designed as an OEM-style replacement or direct-use cutting tool for CNC machining centers and milling machines accepting a 0.5-inch straight shank tool holder.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Secure the 0.5-inch shank in a collet chuck or end mill holder rated for the intended spindle speed and cutting load. Verify runout with a dial indicator before production use. Follow machine tool manufacturer guidelines and applicable shop safety procedures when handling and setting carbide tooling.