Accupro 311782 Square End Mill 3/4 in 5 Flute Solid Carbide

Product Description

The ACCUPRO 311782 is a solid carbide square end mill designed for high-performance milling in demanding machining environments. Built from micrograin carbide and coated with AlTiCrN for heat and wear resistance, this tool handles aggressive cuts in hardened steels, stainless alloys, and other difficult materials. It features a 3/4 inch diameter, a 1-5/8 inch length of cut, and a 38-degree helix angle that promotes efficient chip evacuation and reduces cutting forces. The variable index design minimizes harmonic vibration during heavy cuts. CNC machinists and tool-and-die professionals are the primary users of this class of end mill.

This end mill is suited for side milling, slotting, and profiling operations on CNC machining centers handling ferrous and non-ferrous workpieces. The single-end configuration and right-hand flute direction with right-hand cutting make it a standard choice for conventional vertical and horizontal milling setups. The 3/4 inch shank diameter matches common ER and side-lock toolholders used in production and job-shop environments. Center-cutting capability allows plunge entry when required.

Key Features

• AlTiCrN coating provides high-temperature oxidation resistance and extended tool life in hard and abrasive materials
• 5-flute, micrograin solid carbide construction for rigidity and fine surface finish
• 38-degree helix angle promotes efficient chip evacuation and reduces cutting force
• Variable index flute spacing reduces harmonic chatter during heavy milling passes
• Center-cutting geometry allows direct plunge entry without a pre-drilled hole
• Right-hand cut, right-hand spiral flute direction for standard CNC spindle compatibility

Compatibility

Designed as a direct-fit replacement or new-installation end mill for CNC machining centers and manual mills accepting a 3/4 inch straight shank toolholder. Part of the ACCUPRO Series HS lineup for high-speed and hard-material milling applications.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and the control in an E-stop or locked-out state per applicable OSHA lockout/tagout procedures. Seat the shank fully into the toolholder and torque the retention mechanism to the toolholder manufacturer specification before running. Verify runout with a dial indicator after clamping; excessive runout accelerates flute wear and reduces surface finish quality. Consult the machine tool builder guidelines and applicable ANSI B11 standards for safe cutting parameters.