Accupro 313548 Square End Mill 1 in 2 Flute Solid Carbide Zrn

Product Description

The ACCUPRO 313548 is a solid carbide square end mill designed for precision milling operations in metal, composites, and other hard materials. It features a 1-inch mill diameter, a 4-1/8-inch length of cut, and a 7-inch overall length, placing it in the extra-long category for deep-pocket and extended-reach applications. The 45-degree helix angle promotes efficient chip evacuation and smooth cutting action. A zirconium nitride (ZrN) coating provides enhanced surface hardness and heat resistance, extending tool life in high-speed and dry-cutting conditions. This single-end tool is suited for use by machinists and tooling professionals running CNC milling centers.

This end mill is well suited for deep-cavity milling, slotting, and profiling operations where standard-length tools cannot reach. The extra-long configuration and 1-inch shank diameter make it appropriate for setups requiring extended projection from the spindle nose. Right-hand cutting and right-hand flute direction are standard for conventional CNC machining center spindles. The micrograin carbide substrate supports tight tolerances and repeatable performance across production runs in ferrous and non-ferrous materials.

Key Features

• 1-inch mill diameter with a tight tolerance of +0.000 / -0.002 inches for accurate bore and slot sizing
• 4-1/8-inch length of cut supports deep-pocket and extended-reach milling operations
• 45-degree helix angle for efficient chip flow and reduced cutting forces
• ZrN coating improves wear resistance and performance in dry or semi-dry cutting conditions
• Micrograin solid carbide substrate for rigidity and dimensional stability
• Centercutting design allows direct plunge entry into the workpiece

Compatibility

Designed as an OEM-style replacement or standard tooling selection for CNC milling machines and machining centers accepting a 1-inch straight shank end mill holder or collet chuck.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Verify that the tool holder or collet is rated for the 1-inch shank diameter and that runout is within acceptable limits before beginning a cut. Follow the machine manufacturer guidelines for tool overhang and maximum depth of cut to avoid deflection or tool breakage.