Accupro 12183572 Corner Radius End Mill 1/2 in 4 Flute

Product Description

The ACCUPRO 12183572 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. With a 1/2 inch mill diameter, a 1 inch length of cut, and a 1/8 inch corner radius, this tool reduces stress concentrations at part corners and extends tool life in harder workpiece materials. The 40-degree helix angle improves chip evacuation and cutting efficiency. An AlTiN coating provides thermal resistance and wear protection during high-speed and dry machining operations. It is intended for use by machinists and tool-and-die professionals working on CNC machining centers and manual mills.

This end mill is suited for milling slots, pockets, and contoured profiles in ferrous metals, hardened steels, and high-temperature alloys where a radiused corner is required by part geometry. The single-end, centercutting design allows plunge entry as well as peripheral and face cutting. Its long-length classification and 4 inch overall length make it appropriate for applications requiring additional reach into deep pockets or stepped features.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention in hard materials
• AlTiN coating provides oxidation resistance and extended tool life at elevated cutting temperatures
• 1/8 inch corner radius reduces corner chipping and improves part surface finish at floor-to-wall transitions
• 40-degree helix angle promotes efficient chip flow and reduced cutting forces
• Centercutting geometry allows direct plunge milling without a pre-drilled hole
• Right-hand cut and right-hand flute direction for standard CNC and manual mill spindle compatibility

Compatibility

Designed as a standard 1/2 inch shank end mill for use in ER collet chucks, end mill holders, and shrink-fit toolholders with a 1/2 inch bore on CNC machining centers and manual vertical mills.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's clamping torque and runout specifications. Ensure the spindle and toolholder are clean and free of chips before seating the shank. Confirm shank engagement meets the minimum depth recommended by the toolholder manufacturer to prevent pullout under cutting loads. Do not exceed the tool's rated cutting parameters for the workpiece material and machine spindle power.