Accupro 12181391 Square End Mill 0.315 in 2 Flute Carbide

Product Description

The ACCUPRO 12181391 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. It features a 0.315-inch (8.00 mm) mill diameter, a 0.7874-inch (20.00 mm) length of cut, and a 2-flute spiral geometry with a 40-degree helix angle. The AlTiN coating provides thermal resistance and wear protection, making this tool well suited for cutting harder ferrous materials at elevated speeds. The centercutting design allows for plunge entry, adding flexibility to milling strategies. Machinists and CNC operators in job shops, tool rooms, and production environments install and use this end mill.

This end mill is appropriate for use in vertical machining centers, CNC mills, and manual knee mills where precise slotting, profiling, and peripheral milling are required. The right-hand cut and right-hand flute configuration is standard for the majority of spindle setups. The micrograin carbide substrate supports tight tolerances and consistent edge life across a range of ferrous and non-ferrous materials. The regular length classification makes it a practical general-purpose choice for typical depth-of-cut requirements without excessive overhang.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention
• AlTiN finish provides oxidation and wear resistance at elevated cutting temperatures
• 40-degree helix angle promotes smooth chip evacuation and reduced cutting forces
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Right-hand cut and right-hand spiral flute for standard spindle compatibility
• Mill diameter tolerance of +0.000 / -0.002 inches ensures consistent fit and performance

Compatibility

Designed as a general-purpose solid carbide square end mill compatible with standard ER and straight-shank toolholders accepting an 8.00 mm (0.315-inch) shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify the shank is fully seated and properly torqued in the toolholder collet to the toolholder manufacturer's specifications. Confirm runout is within acceptable limits before beginning a cut to protect both the tool and the workpiece.