Accupro 12181783 Square End Mill 1/4 in 2 Flute Carbide Ticn

Product Description

The ACCUPRO 12181783 is a solid carbide square end mill designed for precision material removal in machining operations. Built from micrograin carbide stock, it carries a TiCN (titanium carbonitride) coating that extends tool life in abrasive cutting environments. The cutting diameter measures 0.25 inches with a 40-degree helix angle and spiral flute geometry that promotes efficient chip evacuation. At 3 inches overall length with a 1.25-inch length of cut, this tool falls in the extra-long category, making it suitable for reaching into deeper pockets and slots. Licensed machinists and CNC operators are the typical end users for this class of tooling.

This end mill fits standard milling, profiling, slotting, and contouring applications on CNC machining centers and manual mills. The centercutting design allows direct plunge entry into workpiece material without a pre-drilled pilot hole. Its 0.25-inch shank diameter seats directly into ER collets, end mill holders, or similar 1/4-inch toolholding systems commonly found in light-to-medium-duty machining setups. Right-hand cut and right-hand flute orientation match conventional spindle rotation on standard machine tools.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• TiCN coating for improved surface hardness and reduced tool wear in abrasive materials
• 40-degree helix angle with spiral flute for aggressive chip evacuation
• Centercutting geometry allows direct plunge entry without pre-drilling
• Extra-long classification with 1.25-inch LOC for deep pocket and slot work
• Right-hand cut, right-hand flute — compatible with standard CNC spindle rotation

Compatibility

Designed for use in 1/4-inch end mill holders, ER collets, and similar toolholding systems on CNC machining centers and manual knee mills requiring a standard 0.25-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing end mills from the holder. Verify collet or holder runout is within acceptable tolerance before cutting to protect both the tool and the workpiece. Torque toolholders per the machine tool manufacturer specifications — do not overtighten collet nuts, as this can damage the shank.