Accupro 12183133 Corner Radius End Mill 3/4 in 4 Flute

Product Description

The ACCUPRO 12183133 is a solid carbide corner radius end mill designed for precision milling in metal-cutting and machining applications. Built from micrograin carbide with a bright uncoated finish, it delivers a 0.75 inch cutting diameter and a 0.010 inch corner radius that reduces edge chipping and extends tool life in demanding materials. With 4 right-hand spiral flutes and a 40-degree helix angle, it promotes efficient chip evacuation and smooth cutting action. The single-end, centercutting design allows both plunge and peripheral milling. This is a long-length tool with a 2.25 inch length of cut and 5 inch overall length, suited to reaches that standard-length end mills cannot access.

This end mill is used in CNC machining centers, knee mills, and manual mills across job shops, tool rooms, and production environments. It is appropriate for ferrous and non-ferrous metals, alloys, and similar workpiece materials where a small corner radius break is required to improve surface finish and reduce stress concentrations at part corners. Machinists and CNC operators working on mold components, die work, or general precision parts will find this geometry well suited to finish and semi-finish passes.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• 0.010 inch corner radius reduces edge chipping and part stress concentrations
• 4 right-hand spiral flutes with 40-degree helix for efficient chip flow
• Centercutting capability allows direct plunge entry into workpiece
• Long-length configuration with 2.25 inch LOC and 5 inch OAL for extended reach
• Bright uncoated finish suitable for a broad range of base materials

Compatibility

Designed as a direct-mount solid carbide end mill with a 0.75 inch shank diameter, compatible with standard ER, CAT, BT, and HSK toolholders sized for 3/4 inch shank tooling on CNC machining centers and manual mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully powered down and the machine is in a safe state before changing tooling. Seat the shank fully into the collet or toolholder and torque retention hardware to the toolholder manufacturer specification. Verify runout with a dial indicator before committing to a finishing pass, as excessive runout will degrade the effective corner radius and surface finish.