Accupro 312263 Square End Mill 5/8 in 5 Flute Solid Carbide

Product Description

The ACCUPRO 312263 is a solid carbide square end mill engineered for high-performance milling in ferrous and difficult-to-machine materials. With a 5/8-inch cutting diameter and five flutes, it delivers smooth chip evacuation and improved surface finish compared to standard four-flute tools. The 38-degree helix angle reduces cutting forces and helps maintain edge stability under aggressive feed rates. An AlTiCrN coating provides thermal resistance and extended tool life in dry or high-speed cutting conditions. This end mill is used by machinists and tooling professionals in CNC milling environments requiring precision and durability.

The 312263 is suited for slotting, profiling, and peripheral milling operations. The 3/4-inch length of cut and 5/8-inch shank diameter support rigid setups in standard toolholders. The variable index geometry reduces harmonic vibration during cuts, making it well suited for finishing passes as well as moderate roughing. The extended reach of 2.375 inches provides clearance for deeper workpiece features without requiring a long-reach toolholder. This is a single-end tool intended for right-hand cutting with right-hand spiral flutes.

Key Features

• 5-flute design improves chip load per tooth and surface finish quality
• AlTiCrN coating delivers high heat resistance and wear protection in demanding materials
• 38-degree helix angle reduces cutting forces and supports higher feed rates
• Variable index geometry minimizes chatter and vibration during milling
• Micrograin solid carbide substrate provides hardness and edge retention
• Center-cutting capable for plunge entry without a pre-drilled hole

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC milling machines accepting a 5/8-inch straight shank end mill in right-hand tool holders.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool changer is disabled before installing or removing the end mill. Secure the shank to the full depth recommended by the toolholder manufacturer to prevent pullout under cutting loads. Verify spindle speed and feed rate settings match the material and coating requirements before engaging the cut.