Accupro 12183389 Corner Radius End Mill 3/4in 4 Flute Altin

Product Description

The ACCUPRO 12183389 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining applications. It features a 3/4-inch diameter, a 3-inch length of cut, and a 0.09-inch corner radius, making it well suited for producing smooth, radiused edges and contoured pockets with high dimensional accuracy. The micrograin carbide substrate provides hardness and edge retention, while the AlTiN coating extends tool life under high-heat cutting conditions. With 4 flutes and a 40-degree right-hand helix, this end mill delivers efficient chip evacuation and a fine surface finish. It is a single-end, centercutting design with a 6-inch overall length.

This end mill is used in production and job shop machining environments for milling steel, stainless steel, cast iron, hardened alloys, and similar ferrous materials. The AlTiN coating performs well in dry or minimal-lubrication cutting conditions where heat generation is a concern. Its extra-long 6-inch overall length allows reach into deep pockets or stepped workpiece geometries. Machinists and CNC operators working with vertical or horizontal machining centers will find this tool appropriate for semi-finish and finish milling passes requiring a radiused corner profile.

Key Features

• 3/4-inch mill diameter with a 3-inch length of cut for deep-reach milling
• 0.09-inch corner radius for smooth, consistent radiused edge profiles
• AlTiN coating for extended tool life in high-temperature ferrous cutting
• Micrograin solid carbide construction for hardness and edge retention
• 4-flute, right-hand spiral design with 40-degree helix for efficient chip evacuation
• Centercutting, single-end configuration supports plunge entry

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills using 3/4-inch collets or end mill holders with a 3/4-inch bore.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the shank in a properly sized collet, hydraulic chuck, or shrink-fit holder to the appropriate torque per the holder manufacturer specification. Verify runout after installation before beginning a cutting pass.