Accupro 311814 Corner Radius End Mill 3/4 in 5 Flute

Product Description

The ACCUPRO 311814 is a single-end corner radius end mill engineered for demanding milling applications in solid carbide construction with an AlCrTiN coating. It measures 0.75 inches in mill diameter with a 2.25-inch length of cut, a 5-inch overall length, and a 0.25-inch corner radius. The five-flute geometry with a 38-degree helix and variable index delivers high material removal rates while reducing chatter. The centercutting design allows plunge entry, and right-hand flute direction supports conventional and climb milling. Micrograin solid carbide provides edge retention and toughness in hardened steels and abrasive alloys.

This end mill is suited for finishing and semi-finishing operations in job shops, tool rooms, and production machining environments. The AlCrTiN coating provides elevated heat resistance and oxidation protection, making it a strong fit for dry or minimum-quantity lubrication (MQL) cutting conditions. It is commonly deployed on CNC machining centers for contouring, profiling, and slotting cuts where corner integrity and surface finish are critical requirements. The 3/4-inch shank diameter suits standard ER and side-lock toolholders widely found in vertical and horizontal machining centers.

Key Features

• 0.25-inch corner radius reduces stress concentration and improves corner life in profiling cuts
• AlCrTiN coating extends tool life in high-temperature cutting conditions
• Five-flute variable index geometry minimizes harmonic vibration and chatter
• Centercutting capability allows direct plunge entry without a pre-drilled pilot hole
• Micrograin solid carbide substrate provides hardness and wear resistance
• 38-degree helix angle promotes efficient chip evacuation in deep pockets

Compatibility

Designed as an OEM-style replacement or direct selection for CNC machining centers accepting a 3/4-inch shank end mill with standard ER collet, Weldon flat, or side-lock toolholding systems.

Installation Notes

Installation should be performed by a qualified machinist or tooling specialist. Ensure the machine spindle is fully stopped and locked out before inserting or removing the end mill from the toolholder. Confirm shank runout is within acceptable tolerance using a dial indicator before initiating a cut. Follow the machine tool manufacturer and toolholder manufacturer guidelines for clamping torque and pull-out force requirements.