Accupro 12182553 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The ACCUPRO 12182553 is a solid carbide corner radius end mill designed for precision milling operations in metal and hard-material applications. It features a 3/8 inch diameter, a 0.045 inch corner radius, and a 40-degree helix angle that promotes smooth chip evacuation and reduces cutting forces. The AlTiN coating provides thermal resistance and extended tool life in high-speed dry or semi-dry cutting environments. With 4 flutes and a centercutting geometry, this tool handles plunging, slotting, and profiling in a single setup. It is sized for use in CNC machining centers and manual mills by machinists and tool-and-die professionals.

This end mill suits applications in ferrous and non-ferrous metals, hardened steels, and aerospace alloys where a controlled corner radius is required to reduce stress concentrations and improve part finish. The single-end configuration and right-hand flute direction make it a standard choice for vertical machining center work. The 7/8 inch length of cut and 3/8 inch shank diameter fit standard ER and side-lock toolholders common in production and job-shop environments.

Key Features

• AlTiN coating for high-temperature resistance and extended tool life in hard and abrasive materials
• Micrograin solid carbide substrate for rigidity and edge retention
• 0.045 inch corner radius reduces stress risers and improves surface finish at part edges
• 40-degree helix angle promotes efficient chip flow and reduced cutting force
• Centercutting design allows direct plunge entry into workpiece material
• Right-hand cut, right-hand flute spiral for standard CNC and manual mill compatibility

Compatibility

Designed as a standard single-end corner radius end mill with a 3/8 inch shank diameter, compatible with ER collet chucks, side-lock holders, and shrink-fit toolholders sized for 3/8 inch shank tooling.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer torque and runout specifications. Verify shank engagement depth meets toolholder requirements before operation. Inspect the collet or holder for wear before seating the tool, as excess runout will accelerate edge wear on carbide tooling. Ensure spindle and feed parameters are set per the material being cut before engaging the workpiece.