Accupro 12182990 Corner Radius End Mill 1 in 4 Flute Carbide

Product Description

The ACCUPRO 12182990 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. It features a 1 inch cutting diameter, a 2.25 inch length of cut, and a 0.03 inch corner radius that reduces stress concentrations and extends tool life at the cutting edge. The 5 inch overall length and 1 inch shank diameter provide rigidity in deep-reach applications. An AlTiN coating delivers high heat and wear resistance, making this end mill well suited for ferrous alloys, hardened steels, and high-temperature superalloys. Licensed machinists and CNC programmers specify this tool for high-efficiency milling passes where edge integrity and dimensional accuracy are critical.

This end mill is intended for CNC machining centers and manual mills in job shops, production facilities, and toolroom environments. The long-length configuration supports slots, pockets, and profiling operations where standard-reach tooling cannot reach the full depth of cut. The centercutting geometry allows plunge entry, increasing setup flexibility. Right-hand flute direction and right-hand cutting action are standard for conventional CNC spindle configurations.

Key Features

• 1 inch cutting diameter with 0.03 inch corner radius for reduced notching and improved surface finish
• AlTiN coating for elevated heat resistance and extended tool life in ferrous and hardened materials
• Solid carbide micrograin construction for rigidity and edge sharpness retention
• 4 spiral flutes, right-hand cut, right-hand helix at 40 degrees
• Centercutting design allows direct plunge entry
• Long-length configuration at 5 inches OAL with 2.25 inches LOC for deep-reach applications
• Single end design — one active cutting end

Compatibility

Designed as a direct-fit replacement or upgrade for 1 inch shank, corner radius end mill applications on standard CNC machining centers and manual mills accepting 1 inch straight shanks. No specific OEM model compatibility was provided by the manufacturer for this part number.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Secure the shank fully within the toolholder collet or end mill holder to the manufacturer-specified engagement depth before tightening. Verify runout at the cutting diameter before beginning a production run. Always confirm spindle speed and feed rate parameters are appropriate for the workpiece material and depth of cut before engaging the tool.