Accupro 12178939 Square End Mill 0.5 in 3 Flute Solid Carbide

Product Description

The ACCUPRO 12178939 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. With a 0.5-inch cutting diameter and a 3-inch length of cut, it delivers extended reach capability for deeper pocketing and slotting operations. The micrograin carbide construction provides edge retention and resistance to wear under high cutting loads. A 40-degree helix angle paired with a spiral flute geometry promotes efficient chip evacuation and reduces cutting forces. The nACRo finish enhances surface hardness and heat resistance, extending tool life in demanding materials. Licensed machinists and CNC operators are the primary users of this tool.

This end mill is suited for milling steel, stainless steel, cast iron, and similar ferrous materials in both manual and CNC machining centers. The centercutting design allows plunge cuts in addition to standard peripheral and slot milling. Its 0.5-inch shank diameter fits standard ER and milling collet systems. The 6-inch overall length provides clearance for deep-cavity work where shorter tools cannot reach. Right-hand cut and right-hand flute orientation follow standard CNC programming conventions, making setup straightforward for most machining operations.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• nACRo coating for elevated heat resistance and extended tool life
• 40-degree helix angle promotes efficient chip evacuation and smooth cutting action
• Centercutting geometry allows direct plunge entry into workpiece material
• Right-hand cut and right-hand flute direction for standard CNC and manual mill use
• Spiral flute design with no chipbreaker for consistent finish in ferrous materials

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for standard 0.5-inch collet and end mill holders used in CNC machining centers and manual knee mills.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is in a safe state before tool changes. Seat the shank fully into the collet or tool holder and torque the retention nut to the tool holder specification. Verify runout with a dial indicator before initiating a cutting cycle.