Accupro 315709 Square End Mill 1 in 3 Flute Solid Carbide Zrn

Product Description

The ACCUPRO 315709 is a solid carbide square end mill designed for precision milling operations in metal cutting, die work, and general machining applications. It features a 1 inch mill diameter, a 1-1/4 inch length of cut, and three flutes with a 37-degree helix angle. The ZrN (zirconium nitride) coating improves surface hardness and heat resistance, extending tool life in ferrous and non-ferrous materials. Micrograin carbide construction provides rigidity and edge retention. This is a single-end, right-hand cutting, right-hand flute tool suited for CNC machining centers and manual mills operated by machinists and tool-and-die professionals.

This end mill is used in production and job shop environments where consistent dimensional accuracy is required. The centercutting design allows for direct plunge entry as well as peripheral and slot milling. The 1 inch shank diameter matches standard ER and shell mill holders used in vertical machining centers. The 37-degree helix promotes efficient chip evacuation and reduces chatter in moderate to deep cuts. It is appropriate for steel, alloy steel, cast iron, and similar workpiece materials where ZrN coatings provide performance advantages.

Key Features

• 1 inch mill diameter with tight tolerance of +0.000/-0.002 inches for precise fit and finish
• 1-1/4 inch length of cut (LOC range 1.25 to 1.50 inches) for versatile depth capability
• ZrN coating for improved wear resistance and thermal stability
• Micrograin solid carbide construction for edge retention and rigidity
• 37-degree helix angle promotes smooth chip flow and reduced vibration
• Centercutting geometry allows plunge milling without pre-drilled entry

Compatibility

Designed as a direct-fit replacement or new installation in standard 1 inch diameter toolholders, including ER32 collet chucks and similar holders used on CNC vertical machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before securing the shank. Torque the collet nut or set screw to the toolholder manufacturer specification. Verify runout with a dial indicator before beginning the cut to avoid premature tool wear or workpiece damage.