Accupro 12179692 Corner Radius End Mill 3/4 in 3 Flute Altin

Product Description

The ACCUPRO 12179692 is a single-end corner radius end mill designed for precision milling in demanding metalworking applications. Built from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride), it delivers hardness and heat resistance needed for cutting ferrous and hardened materials. The tool features a 3/4-inch mill diameter, a 1-5/8-inch length of cut (1.875 inches actual), and a 0.03-inch corner radius that reduces edge chipping and extends tool life in interrupted cuts. With a 35-degree helix angle and three right-hand flutes, it provides efficient chip evacuation and a smooth finish in roughing and semi-finishing passes.

This end mill is suited for vertical machining centers, CNC mills, and manual knee mills running ferrous alloys, stainless steel, titanium, and hardened steels. The centercutting geometry allows for plunge entry, giving machinists flexibility in toolpath programming. It is a standard-reach, regular-length tool appropriate for production shops, tool rooms, and job shops where corner radius geometry is specified to reduce stress concentrations on finished workpiece edges.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• AlTiN coating provides high-temperature hardness and oxidation resistance
• 0.03-inch corner radius reduces edge breakout and extends tool life
• 35-degree helix angle promotes efficient chip evacuation and smooth cutting action
• Centercutting design allows direct plunge entry into workpiece
• Right-hand cut, right-hand flute spiral for standard CNC spindle compatibility

Compatibility

Designed as a standard 3/4-inch shank corner radius end mill compatible with ER, CAT, BT, and HSK toolholders accepting a 3/4-inch straight shank. No specific machine or system compatibility data was provided in the product input.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the toolholder bore is clean and free of chips before seating the shank, and confirm runout with a dial indicator before beginning a cut. Verify spindle speed and feed rate are appropriate for the workpiece material and tool diameter before engaging the cut. Thermal shrink-fit and set-screw holders should meet the shank diameter tolerance range of -0.0001 to -0.0004 inches for proper grip.