Accupro 12181918 Corner Radius End Mill 3/16 in 3 Flute

Product Description

The ACCUPRO 12181918 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. It features a 3/16 inch diameter with a 0.03 inch corner radius, producing a controlled edge blend that reduces stress concentrations at the base of slots and pockets. The 3-flute spiral geometry supports efficient chip evacuation at moderate to high feed rates. With an overall length of 2 inches and a 5/8 inch length of cut, this tool suits shallow-to-mid-depth profiling, contouring, and finishing passes. It is typically installed and run by machinists and toolroom professionals on CNC machining centers and manual milling equipment.

This end mill is suited for general-purpose milling applications requiring a small corner radius blend, including slot milling, side milling, and pocket finishing. The bright uncoated finish makes it appropriate for use in aluminum, brass, and other non-ferrous materials where coating adhesion or heat buildup is a concern. Its centercutting capability allows plunge entry without a pre-drilled pilot hole, adding flexibility in multi-operation setups. The 3/16 inch shank diameter matches the cutter diameter for direct collet or end mill holder mounting.

Key Features

• 0.03 inch corner radius reduces edge chipping and stress risers at slot and pocket floors
• Micrograin solid carbide construction provides rigidity and wear resistance
• 3-flute right-hand spiral geometry supports efficient chip clearance
• Centercutting design allows direct plunge entry
• Bright uncoated finish suits non-ferrous and non-abrasive material applications
• Single-end configuration with 5/8 inch length of cut and 2 inch overall length

Compatibility

Designed as a standard single-end corner radius end mill with a 3/16 inch shank diameter, compatible with collet chucks, end mill holders, and shrink-fit tooling systems accepting 3/16 inch shank tooling.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout verification. Verify collet or holder bore size matches the 3/16 inch shank diameter before mounting, and confirm shank engagement depth meets holder specifications. Shut down and lock out the spindle before changing tooling per standard machine safety procedures. Do not exceed the tool manufacturer recommended speeds and feeds for the workpiece material and depth of cut.