Accupro 312340 Corner Radius End Mill 3/4 in 5 Flute Carbide

Product Description

The ACCUPRO 312340 is a solid carbide corner radius end mill designed for high-performance milling in demanding machining environments. It features a 3/4 inch mill diameter, a 0.090 inch corner radius, and a 5-flute, right-hand spiral configuration with a 38-degree helix angle. The AlCrTiN coating provides thermal resistance and wear protection suited for dry and high-speed cutting applications. At 6 inches overall length with a 2.5 inch reach length, this is an extended-reach tool built for deep-cavity and hard-to-access features. Centercutting geometry allows plunge entry. Machining centers, CNC mills, and tool-and-die operations are the primary applications. Micrograin carbide substrate supports rigidity at extended reach.

This end mill is suited for milling steel, hardened alloys, and other ferrous materials in production and job-shop environments. The variable index flute spacing reduces harmonic chatter at higher feed rates, making it appropriate for finishing passes on deep pockets, ribs, and contoured surfaces. The 1 inch length of cut and 3/4 inch shank diameter are standard for toolholders used in vertical and horizontal machining centers. Single-end configuration with extended reach and reduced neck diameter of 0.712 inches allows clearance in deep-cavity operations without sacrificing rigidity at the shank.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention at extended reach
• AlCrTiN coating for thermal and oxidation resistance in high-speed and dry cutting
• 5-flute, right-hand spiral with 38-degree helix and variable index for chatter reduction
• 0.090 inch corner radius protects edge and produces controlled blend radii on workpiece corners
• Extended reach: 2.5 inch reach length, 6 inch overall length, reduced neck diameter of 0.712 inches
• Centercutting geometry permits plunge and ramping entry without a pre-drilled hole

Compatibility

Designed as an OEM-style replacement and standard production tooling for 3/4 inch toolholders used in CNC vertical and horizontal machining centers requiring extended-reach corner radius end mills.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Secure the 3/4 inch shank in a clean, properly sized collet or endmill holder to the manufacturer-specified torque for the holder type. Inspect runout at the spindle before cutting. Follow shop safety protocols and machine guarding requirements before tool changes; confirm spindle is fully stopped and machine is in a safe state before handling the tool.