Accupro 312293 Square End Mill 5/8 in 5 Flute Solid Carbide

Product Description

The ACCUPRO 312293 is a solid carbide square end mill designed for high-performance milling in demanding shop environments. It features a 5/8 inch cutting diameter with a 3/4 inch length of cut and five spiral flutes arranged in a variable index configuration for improved chatter suppression. The 38-degree helix angle promotes efficient chip evacuation and smooth cutting action. An AlTiCrN coating provides thermal resistance and extended tool life at elevated cutting temperatures. The extended reach design, with a 4.125 inch reach length and 6 inch overall length, makes it suited for deep-pocket and long-reach milling operations. Machinists and CNC operators working in job shops and production environments are the primary users.

This end mill is built for milling ferrous and hardened materials where tool life and surface finish are critical. The single-end, right-hand cut configuration is standard for most vertical and horizontal CNC milling setups. The extended reach capability makes it a practical choice for profiling deep pockets, stepped features, and cavity work where a standard-length tool cannot reach. It is not centercutting-limited, and the solid micrograin carbide substrate provides the rigidity needed for high-speed and high-feed strategies.

Key Features

• 5/8 inch cutting diameter with matching 5/8 inch shank for straight-shank holders and collets
• 5 spiral flutes with variable index geometry to reduce harmonic vibration during cutting
• 38-degree helix angle for efficient chip evacuation and reduced cutting forces
• AlTiCrN coating for high-temperature oxidation resistance and extended tool life
• Extended reach with 4.125 inch reach length and 6 inch overall length for deep-pocket work
• Micrograin solid carbide substrate for rigidity and wear resistance

Compatibility

Designed for use in standard straight-shank milling chucks, ER collet holders, and hydraulic tool holders accepting a 5/8 inch shank diameter on CNC vertical and horizontal milling machines.

Installation Notes

Installation is performed by a machinist or CNC operator. Ensure the tool holder and spindle are clean and free of chips before seating the shank. Torque the tool holder to the machine manufacturer's specification using the appropriate spanner or wrench. Always verify runout after installation before beginning a cut, as excessive runout accelerates tool wear and degrades surface finish.