Accupro 12183668 Corner Radius End Mill 5/16 in 4 Flute Carbide

Product Description

The ACCUPRO 12183668 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. Built from micrograin solid carbide, this single-end, centercutting tool features a 5/16 inch diameter, a 0.09 inch corner radius, and a 1-1/2 inch length of cut. The 40-degree helix and right-hand spiral flute geometry promote efficient chip evacuation and smooth cutting action. At 6 inches overall length, this is an extra-long reach tool suited for deep-cavity and contour milling work. It is installed and operated by machinists and CNC programmers on vertical and horizontal milling machines.

This end mill is appropriate for finishing and semi-finishing passes in mold, die, and general precision machining applications where a controlled corner radius is required to reduce stress concentrations or meet part geometry specifications. The bright uncoated finish makes it a solid choice for non-ferrous metals and applications where coating interaction with the workpiece material is a concern. Its extra-long overall length allows access to deep pockets and stepped features that standard-length tools cannot reach.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• 0.09 inch corner radius for controlled edge geometry and reduced stress risers
• Extra-long 6 inch overall length for deep-pocket and extended-reach applications
• 4 right-hand spiral flutes with 40-degree helix for efficient chip removal
• Centercutting design allows plunge milling entries
• Bright uncoated finish suitable for non-ferrous and general-purpose machining

Compatibility

Designed as an OEM-style replacement or direct-use tool for standard 5/16 inch collet or end mill holders on CNC machining centers and manual milling machines accepting a 5/16 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holder torque and runout specifications. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Verify collet or end mill holder cleanliness and concentricity before securing the shank. Consult the machine control program and feeds-and-speeds reference data appropriate to the workpiece material before beginning the cut.