Accupro 12180378 Corner Rounding End Mill 1/4 in 4 Flute Carbide

Product Description

The ACCUPRO 12180378 is a solid carbide corner rounding end mill designed to produce consistent edge radii on ferrous and non-ferrous workpieces. With a 0.04 inch corner radius and a 0.25 inch mill diameter, it delivers precise radiused profiles in a single pass. The double-end design extends tool life by providing two usable cutting ends before the tool is retired. Four right-hand flutes with a right-hand cutting direction provide efficient chip evacuation and a smooth finish. This end mill is suited for machinists and toolroom professionals working on CNC machining centers and manual mills.

This end mill is used in precision machining applications where controlled corner radii are required on part edges. Typical scenarios include finishing operations on molds, dies, fixtures, and machined components where a 0.04 inch radius is specified per print. The uncoated bright finish makes it well-suited for non-ferrous materials such as aluminum and brass, as well as softer steels at moderate cutting speeds. The 0.25 inch shank diameter fits standard collet chucks and end mill holders commonly found in both manual and CNC setups.

Key Features

• 0.04 inch corner radius for precise edge profiling
• Solid carbide construction for rigidity and wear resistance
• Double-end design doubles usable tool life per tool
• Four right-hand flutes promote efficient chip evacuation
• Uncoated bright finish suitable for non-ferrous and softer materials
• 0.25 inch shank diameter fits standard collet and end mill holders

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner rounding end mill for standard 1/4 inch collet chucks and end mill holders on CNC machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist familiar with tool holder torque procedures and machine spindle specifications. Ensure the spindle is fully stopped and the machine is powered down or in an e-stop state before changing tooling. Seat the shank fully into the collet or end mill holder and verify runout with a dial indicator before beginning any cut. Follow the machine manufacturer and tooling manufacturer guidelines for speeds and feeds appropriate to the workpiece material.