Accupro 12181917 Corner Radius End Mill 3/16 in 3 Flute

Product Description

The ACCUPRO 12181917 is a solid carbide corner radius end mill designed for precision milling operations in metal cutting and machining applications. With a 3/16 inch (0.1875 inch) mill diameter and a 0.0200 inch corner radius, this tool produces smooth, radiused transitions at the base of milled features, reducing stress concentrations and improving part finish. The 3-flute, right-hand spiral geometry provides efficient chip evacuation while maintaining rigidity in the cut. It is a single-end, centercutting tool, meaning it can plunge directly into the workpiece. Machinists and toolroom professionals in CNC and manual milling environments install and use this tool.

This end mill is suited for finish milling, profiling, and contouring operations in ferrous and non-ferrous metals where a small corner radius is required on the finished feature. The bright/uncoated finish makes it a straightforward choice for general-purpose machining where coating is not required or where regrinding is anticipated. The 5/8 inch length of cut (LOC) and 2 inch overall length (OAL) fit standard short-reach milling scenarios in production and job shop environments. The 3/16 inch shank diameter matches the mill diameter for direct collet or end mill holder mounting.

Key Features

• 3/16 inch (0.1875 inch) mill diameter with matching 3/16 inch shank for direct holder fitment
• 0.0200 inch corner radius for precise radiused edge generation on milled features
• 3-flute right-hand spiral geometry for balanced chip evacuation and rigidity
• Centercutting design allows direct plunge entry without pre-drilling
• Micrograin solid carbide construction for wear resistance and dimensional stability
• Bright/uncoated finish suitable for general-purpose machining and regrind applications
• 40-degree helix angle promotes smooth cutting action and reduced chatter

Compatibility

Designed as an OEM-style replacement or direct tooling selection for standard 3/16 inch collets, end mill holders, and shrink-fit holders used in CNC machining centers and manual knee mills.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the spindle is fully powered down and the machine is in a safe lockout/tagout state before changing tooling. Seat the shank fully and evenly in the collet or holder to the recommended grip length before torquing the retention nut. Verify runout with a dial indicator after mounting to confirm proper seating before beginning any cut.