Accupro 12181952 Corner Radius End Mill 1/4 in 3 Flute

Product Description

The ACCUPRO 12181952 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining applications. It features a 1/4 inch diameter with a 0.045 inch corner radius and a 3/4 inch length of cut, making it well suited for producing smooth, radiused inside corners and contoured profiles. With three flutes in a right-hand spiral configuration, this single-end, centercutting tool removes material efficiently and allows entry into a workpiece face. The bright, uncoated finish is appropriate for general-purpose cutting where coating is not required. At 2-1/2 inches overall length, it fits standard toolholding setups used by machinists and tool-and-die professionals.

This end mill is used in vertical and horizontal milling machines, CNC machining centers, and manual knee mills across job shops, production facilities, and tool rooms. It is suited for slotting, profiling, and finishing passes where a defined corner radius is required on the finished part geometry. The 1/4 inch shank diameter fits common collet and end mill holder sizes. Micrograin carbide construction supports use on ferrous and non-ferrous materials where a bright, uncoated tool is appropriate for the workpiece material and cutting parameters.

Key Features

• 0.045 inch corner radius for controlled radiused corner geometry on finished surfaces
• Solid micrograin carbide construction for rigidity and edge retention
• Three right-hand spiral flutes with centercutting capability for plunge entry
• Bright, uncoated finish suitable for general-purpose milling applications
• Single-end design with 1/4 inch shank diameter for standard collet compatibility
• Right-hand cutting direction with variable index set to standard configuration

Compatibility

Designed as a standard 1/4 inch shank corner radius end mill for use in collets, end mill holders, and toolholding systems that accept 1/4 inch round shanks on CNC and manual milling equipment.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool runout, stick-out, and clamping torque. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Verify collet or holder cleanliness and seat the shank to the recommended minimum engagement depth before tightening. Always confirm tool runout with a dial indicator before initiating a cut, particularly on finishing operations where dimensional accuracy is critical.