Accupro 12181306 Corner Radius End Mill 3/16 in 2 Flute Altin

Product Description

The ACCUPRO 12181306 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. The tool measures 3/16 inches in diameter with a 5/8-inch length of cut and a 0.015-inch corner radius, making it well-suited for applications where a sharp inside corner must be avoided or where a consistent edge radius improves part finish. A 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces. The AlTiN coating provides thermal resistance for dry or high-speed cutting in hardened steels, stainless, and other demanding materials. It is a single-end, centercutting design, allowing plunge entry into a workpiece.

This end mill is used in CNC machining centers and manual mills for finishing and semi-finishing passes on ferrous and non-ferrous metals. The 2-flute configuration makes it appropriate for slotting, profiling, and shallow pocket work where chip clearance is a priority. It is a common choice for toolroom machinists, production shops, and precision component manufacturers working with tighter tolerances. The 3/16-inch shank diameter and 2-inch overall length suit compact toolholders and setups with limited z-axis clearance.

Key Features

• 0.015-inch corner radius reduces stress concentrations and improves surface finish at part edges
• AlTiN coating supports high-temperature cutting in hardened steels and stainless alloys
• 40-degree helix angle promotes smooth cutting action and efficient chip removal
• Centercutting design allows direct plunge entry without pre-drilling
• Micrograin solid carbide construction for dimensional stability and wear resistance
• Right-hand cut and right-hand flute spiral for standard CNC spindle compatibility

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for standard 3/16-inch collet chucks, end mill holders, and ER-style toolholders used in CNC machining centers and manual mills.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Secure the shank to the full recommended engagement depth in the toolholder to prevent pullout during cutting. Verify runout after installation using a dial indicator before beginning any cut.