Accupro 12183470 Corner Radius End Mill 3/16 in 4 Flute Altin

Product Description

The ACCUPRO 12183470 is a solid carbide corner radius end mill designed for precision milling operations in demanding shop environments. It features a 3/16 inch diameter with a 1 inch length of cut and a 0.06 inch corner radius, making it well-suited for profiling, contouring, and finishing passes where edge integrity and surface finish are critical. The 4-flute, single-end geometry with a 40-degree helix angle promotes efficient chip evacuation and stable cutting action. An AlTiN coating provides heat resistance and extended tool life in ferrous and hardened materials. This tool is intended for use by machinists and tool-and-die professionals on CNC milling equipment.

This end mill is appropriate for use in high-speed machining centers and manual mills requiring a long-reach configuration. The 4 inch overall length supports reach into deeper pockets or stepped features where shorter tools cannot access. The centercutting design allows plunge entry, expanding its versatility across roughing-to-finishing transition moves. It is commonly applied to mold and die work, aerospace components, and precision part finishing where controlled corner geometry is required to meet tight tolerance requirements.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in hard materials
• AlTiN coating for elevated heat resistance and extended tool life in ferrous alloys
• 0.06 inch corner radius reduces stress concentrations and improves surface finish at part edges
• 40-degree helix angle promotes smooth chip flow and reduced cutting forces
• Centercutting geometry enables direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute spiral for use on standard CNC and manual milling machines

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for CNC machining centers and manual mills accepting a 3/16 inch shank diameter collet or tool holder.

Installation Notes

Installation should be performed by a qualified machinist following standard toolroom practices. Ensure the spindle is fully stopped and the machine is in a safe state before inserting or removing the tool. Secure the shank in a properly sized collet or end mill holder to the full recommended grip length to minimize runout and prevent pullout during cutting. Verify tool runout with a dial indicator before beginning production cuts on tight-tolerance work.