Iscar 5621261 Corner Radius End Mill 1/2 in 4 Flute

Product Description

The ISCAR 5621261 is a solid carbide corner radius end mill designed for high-performance milling in demanding metal-cutting applications. It carries a 1/2-inch cutting diameter, a 1-inch length of cut, and a 0.02-inch corner radius that strengthens the cutting edge and reduces chipping at the tool tip. The tool is coated with AlTiN (Aluminum Titanium Nitride) via a PVD process, which provides heat resistance and extended tool life at elevated cutting speeds. With 4 helical flutes and a right-hand cutting direction, it is suited for both roughing and finishing passes. Licensed machinists and CNC operators working in production shops are the primary users.

This end mill is built for use on CNC machining centers and milling machines where consistent edge geometry is critical. It is rated for primary workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The single-end, center-cutting design allows plunge entry, making it versatile for contour milling, slotting, and profiling operations. It belongs to the ECI-E-4R series and is manufactured from submicron-grade carbide for improved edge retention in abrasive and high-hardness materials.

Key Features

• AlTiN PVD coating for heat resistance and extended tool life in ferrous and hard materials
• 0.02-inch corner radius reinforces the cutting edge and reduces corner breakage
• Center-cutting capability allows direct plunge entry without a pilot hole
• 4 helical flutes with normal pitch support efficient chip evacuation in roughing and finishing
• Submicron carbide grade provides superior hardness and wear resistance
• Straight-cylindrical shank with h6 tolerance for precise toolholder fit

Compatibility

Designed for use with standard milling toolholders accepting a 1/2-inch straight-cylindrical shank. Suitable for machining steel, stainless steel, cast iron, superalloys, titanium, and hard materials per the ECI-E-4R series specifications.

Installation Notes

Installation is performed by qualified CNC machinists or tool-and-die professionals. Secure the shank fully into a compatible toolholder and verify runout before cutting. Power down and lock out the spindle before changing tooling. Do not exceed the toolholder's rated speed or axial depth of cut for the workpiece material being machined.