Accupro 312924 Square End Mill 1/8 in 2 Flute Carbide Zrn

Product Description

The ACCUPRO 312924 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. It carries a 1/8 inch cutting diameter with a 3/8 inch length of cut and a 45-degree helix angle. The ZrN (zirconium nitride) coating improves surface hardness and heat resistance, extending tool life in demanding cutting environments. The micrograin carbide substrate provides rigidity and edge retention at small diameters. With a 1-1/2 inch overall length and single-end configuration, this tool is suited for CNC machining centers and manual mills handling tight-tolerance work in toolrooms, job shops, and production environments.

This end mill fits applications requiring a compact, small-diameter cutter with aggressive chip evacuation. The 2-flute, right-hand spiral design promotes efficient chip clearing in slotting and profiling passes. The regular-length body keeps deflection low at this diameter. Machinists running aluminum, brass, plastics, or light steels will find the ZrN coating particularly effective for maintaining edge sharpness across longer run cycles. Center-cutting capability allows plunge entry without a pre-drilled hole, adding flexibility in complex toolpath routines.

Key Features

• ZrN coating for improved hardness, heat resistance, and tool life
• Micrograin solid carbide substrate for rigidity and sharp edge retention
• 45-degree helix angle for efficient chip evacuation and smooth cutting action
• Center-cutting design allows direct plunge entry
• Right-hand cut and right-hand flute spiral for standard CNC spindle compatibility
• Single-end configuration with 1/8 inch shank matching cutting diameter for collet convenience

Compatibility

Designed for use in CNC machining centers, knee mills, and toolroom machines accepting 1/8 inch straight-shank end mills via collet or end mill holder. No specific machine model compatibility was stated in the product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe state before tool changes. Secure the 1/8 inch shank in a properly sized collet or end mill holder, verifying adequate shank engagement depth to prevent pullout under cutting loads. Follow shop-standard runout checks after installation, as small-diameter carbide tools are sensitive to excessive runout and can fracture under lateral deflection.