Accupro 312122 Square End Mill 3/8 in 5 Flute Solid Carbide

Product Description

The ACCUPRO 312122 is a solid carbide square end mill designed for high-performance material removal in precision machining applications. It features a 3/8 inch cutting diameter with a 1/2 inch length of cut and a 38-degree helix angle that promotes efficient chip evacuation and reduced cutting forces. The five-flute configuration increases feed rates compared to standard four-flute designs while maintaining a strong core. An AlTiCrN coating provides excellent heat resistance and wear protection, making this end mill well suited for harder workpiece materials and dry or semi-dry cutting conditions. Machinists and tool-and-die professionals are the primary users.

This end mill is intended for use in CNC milling operations on machining centers and manual mills where tight tolerances and smooth surface finishes are required. The 3/8 inch shank diameter matches the cutting diameter for direct collet or toolholder chuck-up without a reducer. The 4 inch overall length and 1.125 inch reach length provide clearance in moderate-depth pockets and slots. Variable index flute spacing helps suppress chatter during aggressive cuts in steel, stainless, cast iron, and similar ferrous and non-ferrous materials.

Key Features

• Solid micrograin carbide substrate for rigidity and wear resistance
• AlTiCrN coating for elevated heat resistance and extended tool life
• 38-degree right-hand spiral helix for efficient chip lift and reduced cutting pressure
• Five flutes with variable index spacing to minimize vibration and chatter
• Center-cutting design allows plunge entry as well as peripheral and slot milling
• Extended reach at 1.125 inches supports deeper pocket and slot work

Compatibility

Designed as an OEM-style solid carbide square end mill for use in standard 3/8 inch collets, ER collet chucks, or hydraulic toolholders on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or toolroom professional. Always power down and lock out the spindle before changing tooling. Ensure the shank is fully seated and properly torqued in the toolholder according to the toolholder manufacturer specifications. Inspect the collet or chuck bore for runout before operation to protect both the tool and the workpiece.