Accupro 12178815 Square End Mill 1/4 in 2 Flute Solid Carbide

Product Description

The ACCUPRO 12178815 is a solid carbide square end mill designed for precision milling operations in ferrous and non-ferrous materials. The tool features a 0.25-inch cutting diameter, a 1.125-inch length of cut, and a 3-inch overall length. Constructed from micrograin solid carbide, it delivers rigidity and edge retention that general-purpose high-speed steel tooling cannot match. The nACRo finish reduces friction and improves heat resistance during aggressive cuts. This is a centercutting tool, meaning it can be plunged directly into the workpiece. Machinists and tool-and-die professionals use it in CNC machining centers and manual mills where tight tolerances and fine surface finish are required.

This end mill is suited for slotting, profiling, and plunge-cutting applications in shop environments running ferrous alloys, aluminum, and plastics. The 2-flute configuration provides adequate chip clearance in slotting passes where flute pockets need to evacuate material efficiently. The 40-degree helix angle promotes smooth cutting action and reduces chatter on both roughing and light finishing passes. The 0.25-inch shank diameter fits standard 1/4-inch collets and end mill holders commonly found in ER-style and straight-bore tooling setups.

Key Features

• Micrograin solid carbide construction for superior hardness and edge retention
• nACRo finish reduces heat buildup and extends tool life in high-speed cuts
• 40-degree helix angle reduces chatter and improves surface finish
• Centercutting design allows direct plunge entry into the workpiece
• Right-hand cut and right-hand spiral flute configuration for standard spindle use
• 2-flute geometry provides maximum chip clearance in slotting applications

Compatibility

Designed as an OEM-style replacement or direct-use cutting tool compatible with standard 1/4-inch collets and end mill holders in CNC machining centers and manual vertical mills.

Installation Notes

Installation should be performed by a qualified machinist familiar with cutting tool mounting procedures. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into the collet or holder and torque the retention mechanism to the toolholder manufacturer's specification. Verify runout with a dial indicator before initiating a cut to avoid premature tool wear or workpiece damage.