Accupro 311808 Corner Radius End Mill 3/4 in 5 Flute

Product Description

The ACCUPRO 311808 is a solid carbide corner radius end mill engineered for demanding milling applications in ferrous and hardened materials. It features a 3/4 inch diameter, a 2.25 inch length of cut, and a 5 inch overall length. The five-flute design with a 38-degree helix promotes efficient chip evacuation and stable cutting at elevated feed rates. An AlCrTiN coating provides thermal and oxidation resistance, extending tool life in high-temperature cutting environments. The corner radius measures 0.06 inches, reducing stress concentration at the cutting edge and improving surface finish in profiling passes. Variable index flute spacing reduces chatter and vibration during cuts.

This end mill is suited for mold and die work, aerospace component machining, and general precision metalworking where corner integrity and tool longevity are critical. It operates as a single-end, centercutting tool, allowing direct plunge entry into workpieces. Right-hand flute direction and right-hand cutting direction are standard. The micrograin solid carbide substrate supports use on CNC machining centers handling hardened steels, stainless alloys, and titanium-based materials. It fits standard 3/4 inch collets or end mill holders without modification.

Key Features

• AlCrTiN coating for high-temperature oxidation resistance and extended tool life
• Five flutes with variable index spacing to reduce chatter and improve surface finish
• 0.06 inch corner radius reduces edge stress and improves profile accuracy
• Centercutting design enables direct plunge milling
• Micrograin solid carbide substrate for rigidity and wear resistance
• 38-degree helix angle promotes aggressive chip evacuation

Compatibility

Designed as a direct-fit replacement for standard 3/4 inch shank end mill holders and collet chucks used on CNC machining centers requiring a corner radius end geometry in the HS series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the spindle before mounting or removing the tool. Seat the shank fully in the holder to the recommended gauge line and torque the retention screw to holder manufacturer specifications. Verify runout with a dial indicator before beginning a production cut.