Accupro 12182474 Corner Radius End Mill 1/4 in 4 Flute Altin

Product Description

The ACCUPRO 12182474 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. It features a 1/4 inch diameter, a 3/4 inch length of cut, and a 0.09 inch corner radius that reduces stress concentrations and extends tool life in high-cycle operations. The 4-flute geometry combined with a 40-degree helix angle promotes efficient chip evacuation and smooth surface finishes. An AlTiN coating provides thermal resistance and hardness at elevated cutting temperatures. This tool is intended for use by machinists, toolroom operators, and CNC programmers working in production or job-shop environments.

This end mill is suited for slotting, profiling, and contouring operations in ferrous metals, hardened steels, stainless steels, and high-temperature alloys. The centercutting design allows plunge entry, giving the tool flexibility in 3-axis and multi-axis CNC machining centers. The single-end configuration and 1/4 inch shank make it compatible with standard ER collet chucks, end mill holders, and shrink-fit tooling systems commonly used in vertical and horizontal machining centers.

Key Features

• 0.09 inch corner radius reduces edge chipping and improves workpiece surface finish
• AlTiN coating enhances wear resistance and performance in dry or minimal-lubrication cutting
• 4-flute, right-hand spiral geometry with 40-degree helix for efficient chip flow
• Micrograin solid carbide substrate provides rigidity and dimensional stability
• Centercutting end allows direct plunge milling without a pre-drilled entry hole
• 2-1/2 inch overall length with 1/4 inch shank fits standard collet and end mill holder setups

Compatibility

Designed as an OEM-style replacement or direct-use cutting tool for CNC machining centers and manual mills accepting 1/4 inch shank tooling with standard ER or end mill holder collet systems.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, locked-out state. Verify runout at the shank using a dial indicator before committing to production cuts. Torque collet nuts to the toolholder manufacturer specification. Inspect the corner radius and cutting edges for chips or wear before each use, as carbide tools can fail suddenly if damage is present.