Accupro 12183555 Corner Radius End Mill 1/2 in 4 Flute

Product Description

The ACCUPRO 12183555 is a single-end corner radius end mill ground from micrograin solid carbide and intended for precision milling operations in metalworking and machining environments. It carries a 0.015-inch corner radius that reduces stress concentrations at the bottom of a cut and extends tool life in profiling and finishing passes. The 40-degree helix angle promotes smooth chip evacuation and reduces cutting forces. With a 1/2-inch diameter, four flutes, and a bright uncoated finish, this tool is suited for shops running dry or with minimal coolant where a coating is not required. Machinists and tool-and-die professionals install and operate this end mill in CNC machining centers and manual knee mills.

This end mill is sized for general-purpose slotting, profiling, and contouring in ferrous and non-ferrous materials. The long-length geometry provides a 1-inch length of cut and a 4-inch overall length, allowing access to deeper features without requiring extended-reach tooling. The centercutting design permits direct plunge entry, which is useful in pocketing operations. The right-hand cut and right-hand spiral flute direction match standard spindle rotation on most vertical machining centers. It is appropriate for production shops, job shops, and maintenance machining applications.

Key Features

• 0.015-inch corner radius reduces chipping at the tool tip and improves surface finish in profiling passes
• Micrograin solid carbide construction delivers hardness and wear resistance across a broad range of workpiece materials
• 40-degree helix angle promotes efficient chip evacuation and lowers cutting forces
• Centercutting design allows direct plunge milling without a pre-drilled entry hole
• Bright/uncoated finish suitable for dry cutting or applications where a coating is unnecessary
• Long-length geometry at 4 inches overall length provides reach for deeper pocket and profile features

Compatibility

Designed as a standard 1/2-inch shank corner radius end mill compatible with ER and side-lock toolholders sized for 1/2-inch shank diameter on CNC machining centers and manual vertical mills.

Installation Notes

This tool is installed by a machinist or toolroom technician using a clean, properly sized toolholder torqued according to the toolholder manufacturer specifications. Ensure the spindle and machine table are fully stopped and the machine is locked out before changing tooling. Verify runout at the shank with a dial indicator before production use, as excessive runout accelerates tool wear and degrades surface finish. Follow applicable shop safety standards and machine-specific operating procedures during setup and operation.