Accupro 311725 Square End Mill 5/8 in 5 Flute Solid Carbide

Product Description

The ACCUPRO 311725 is a solid carbide square end mill built for high-performance milling in ferrous and hardened materials. It runs a 5/8-inch cutting diameter with a 1-5/8-inch length of cut and five spiral flutes for aggressive material removal with strong chip evacuation. The 38-degree helix angle reduces cutting forces and improves surface finish. An AlTiCrN coating delivers excellent heat resistance and wear protection at elevated cutting temperatures. The variable index design reduces chatter and vibration during cuts. This end mill is a single-end tool intended for use by machinists and tool-and-die professionals on CNC machining centers and manual mills.

The 311725 is suited for finish and semi-finish milling operations in steel, stainless, cast iron, and hardened workpiece materials. The micrograin carbide substrate supports edge sharpness retention over extended run times. Its right-hand cut and right-hand flute direction are standard for conventional and climb milling setups. The 5/8-inch shank diameter matches common ER and side-lock toolholders. At 3.5 inches overall length, it fits standard tool-length reach requirements without extended-reach toolholding.

Key Features

• Solid micrograin carbide construction for edge retention in hard and abrasive materials
• AlTiCrN coating resists heat and oxidation during high-speed dry or minimal-lubrication cutting
• Five-flute configuration increases feed rate capability over four-flute designs
• 38-degree helix angle reduces cutting force and improves surface finish quality
• Variable index spacing dampens chatter in difficult setups
• Center-cutting geometry allows plunge entry

Compatibility

Designed as a direct-fitment end mill for CNC machining centers and manual mills using standard 5/8-inch bore toolholders, including ER collet chucks and side-lock holders. Part of the ACCUPRO HS Series.

Installation Notes

Installation is performed by machinists using standard toolholding equipment. Ensure the shank is clean and free of chips before seating in the collet or holder. Torque the toolholder to the machine manufacturer's specification. Confirm runout with a dial indicator before beginning the cut to protect both the tool and the workpiece.