Accupro 12182907 Square End Mill 27/64 in 4 Flute Carbide

Product Description

The ACCUPRO 12182907 is a solid carbide square end mill designed for precision milling operations in metal, composites, and other hard materials. Built from micrograin carbide, it delivers consistent edge integrity and wear resistance across demanding cutting applications. The 27/64 inch (0.4219 inch) cutting diameter pairs with a 40-degree helix angle and four spiral flutes for efficient chip evacuation and smooth surface finishes. At 2 inches overall length with a 5/8 inch length of cut, this is a stub-length tool optimized for rigidity in tight-clearance setups. Licensed machinists and toolroom technicians are the primary users.

This end mill is suited for slot milling, peripheral milling, and profiling operations on CNC machining centers and manual mills. The centercutting geometry allows plunge entry, adding flexibility for pocketing operations. The right-hand cut and right-hand flute configuration is the standard orientation for conventional and climb milling on most vertical spindle machines. Its stub-length design minimizes deflection, making it a practical choice when reach requirements are modest and rigidity is the priority.

Key Features

• Micrograin solid carbide construction for extended tool life in ferrous and non-ferrous materials
• 40-degree helix angle promotes efficient chip evacuation and reduced cutting forces
• Centercutting capability allows direct plunge entry into workpiece material
• Four spiral flutes deliver a balance of chip clearance and edge strength
• Stub-length (2 inch OAL) design maximizes rigidity and minimizes deflection
• Uncoated finish suitable for applications where coating is not required or coolant is used

Compatibility

Designed as a standard 7/16 inch shank square end mill compatible with ER-style collet chucks, end mill holders, and other toolholding systems accepting a 7/16 inch straight shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholding specifications. Ensure the spindle is fully stopped and machine power is off before changing tooling. Insert the shank to the recommended minimum clamping depth in the collet or holder and torque retention hardware per the holder manufacturer's guidelines. Confirm runout with a dial indicator before beginning production cuts.