Accupro 12182170 Square End Mill 0.25 in 3 Flute Carbide Ticn

Product Description

The ACCUPRO 12182170 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. Built from micrograin carbide stock, it delivers consistent edge retention and dimensional stability under demanding cutting conditions. The TiCN (Titanium Carbonitride) coating reduces friction and improves wear resistance compared to uncoated carbide. At 0.25 inches in diameter with a 3-flute, 40-degree helix spiral configuration, this stub-length end mill is optimized for rigidity in short-reach cuts. The centercutting geometry allows direct plunge entry into workpiece material. Right-hand cut and right-hand flute orientation suit standard CNC and manual mill setups. Installed by machinists and toolroom operators across production and job-shop environments.

This end mill is suited for ferrous and non-ferrous material removal in milling centers and knee mills requiring a compact, rigid tool profile. The stub length overall measurement of 2 inches keeps deflection low when slotting, profiling, or pocketing in tighter workpiece geometries. The 3-flute design balances chip evacuation with surface finish quality, making it a practical choice for both roughing passes and light finishing work where a 4-flute tool may load up. The 0.375-inch length of cut limits depth-of-cut per pass but contributes to the overall rigidity that stub-length tools are selected for in production environments.

Key Features

• Solid micrograin carbide construction for edge retention and thermal stability
• TiCN coating reduces tool wear and surface friction during cutting
• 40-degree helix angle promotes smooth chip flow and reduced cutting forces
• Centercutting design allows direct plunge milling without pre-drilled entry
• Stub length profile (2 inches OAL) maximizes rigidity and minimizes deflection
• Right-hand cut and right-hand flute for compatibility with standard spindle rotation

Compatibility

Designed as an OEM-style replacement or standard tooling option for 1/4-inch collet or end mill holders in CNC machining centers, vertical knee mills, and similar equipment requiring a 0.25-inch shank diameter tool.

Installation Notes

Installation requires a clean, correctly sized collet or end mill holder rated for 0.25-inch shank diameters; worn or contaminated holders accelerate runout and reduce tool life. Power down and lock out the spindle before inserting or removing the tool. Verify shank insertion depth meets the holder manufacturer minimum engagement requirement before tightening. Follow shop-standard speeds and feeds for the workpiece material and coating type to avoid premature edge failure.