Accupro 12181837 Square End Mill 5/16 in 2 Flute Solid Carbide

Product Description

The ACCUPRO 12181837 is a solid carbide square end mill designed for precision milling operations in ferrous and non-ferrous materials. It features a 5/16 inch cutting diameter, a 1-1/2 inch length of cut, and a 6 inch overall length, placing it in the extra-long reach category. The 40-degree helix angle and TiCN coating work together to promote chip evacuation and extend tool life in demanding cutting environments. With two spiral flutes and a centercutting geometry, this end mill handles both peripheral and plunge cuts. Machinists and tool-and-die professionals working on CNC machining centers and manual mills are the primary users.

This end mill suits applications where standard-length tools cannot reach the workpiece or where clearance over fixtures is required. The extra-long 6 inch OAL makes it appropriate for deep-pocket milling, tall workpiece profiling, and setups with elevated vise jaws or tombstone fixtures. The micrograin carbide substrate supports higher surface footage and improved edge retention compared to standard carbide grades. Right-hand cut and right-hand flute configuration is compatible with conventional CNC spindle direction.

Key Features

• Solid micrograin carbide construction for improved edge retention and wear resistance
• TiCN finish reduces friction and extends tool life in abrasive materials
• 40-degree helix angle promotes aggressive chip evacuation and smooth cutting action
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Extra-long 6 inch OAL provides clearance for deep-reach and fixture-clearance applications
• Two-flute geometry offers larger chip gullets for improved chip flow in softer materials

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill for standard 5/16 inch collet or end mill holder tooling systems on CNC machining centers and manual knee mills.

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 the machine is in a safe state before loading or changing tooling. Use a properly sized collet or end mill holder with adequate clamping length on the shank to prevent pullout under load. Verify runout at the cutting end after installation before beginning a production cut.