Accupro 313443 Square End Mill 3/4 in 2 Flute Solid Carbide

Product Description

The ACCUPRO 313443 is a solid carbide square end mill designed for precision material removal in milling operations. It features a 3/4 inch diameter cutting edge with a 1-5/8 inch length of cut and a 4 inch overall length. The two-flute, right-hand spiral geometry is paired with a 45 degree helix angle, promoting efficient chip evacuation and reduced cutting forces. A zirconium nitride (ZrN) coating improves wear resistance and surface lubricity, extending tool life in demanding applications. Built from micrograin solid carbide, this end mill holds tight dimensional tolerances and is centercutting, allowing plunge entry into workpieces.

This end mill is suited for machining a wide range of materials including aluminum, brass, plastics, and some ferrous alloys where a ZrN coating is appropriate. The regular length designation and 3/4 inch shank diameter make it compatible with standard ER and side-lock toolholders used in CNC machining centers and manual knee mills. It is a single-end tool intended for professional machining environments where dimensional accuracy and tool longevity are priorities.

Key Features

• Solid micrograin carbide construction for rigidity and extended tool life
• ZrN coating reduces friction and improves wear resistance at the cutting edge
• 45 degree helix angle promotes efficient chip flow and smooth cutting action
• Centercutting design allows direct plunge milling without pre-drilling
• Right-hand cut and right-hand flute direction for standard spindle rotation
• Mill diameter tolerance of +0.000 / -0.002 inches for consistent fitment and accuracy

Compatibility

Designed as a direct-fit replacement or new-install tool for CNC machining centers and manual mills using standard 3/4 inch diameter toolholders. No specific OEM model compatibility was provided in the product data.

Installation Notes

Installation should be performed by a qualified machinist familiar with toolholder torque procedures and runout verification. Before mounting, clean the shank and collet bore to remove chips, oil, or debris that could affect concentricity. Verify runout with a dial indicator after clamping. Always bring the spindle to a full stop before changing or adjusting tooling.