Iscar 5623209 Corner Radius End Mill 3/8 in 5 Flute Carbide

Product Description

The ISCAR 5623209 is a solid carbide corner radius end mill designed for high-performance milling in demanding material applications. It features a 3/8 inch cutting diameter, a 0.06 inch corner radius, and five flutes with a variable index geometry for chatter suppression during both roughing and finishing passes. The AlTiN (aluminum titanium nitride) PVD coating provides thermal resistance and extended tool life when cutting abrasive or hard workpiece materials. Overall length is 3 inches with a 3/8 inch straight-cylindrical shank. This tool is installed by machinists and CNC operators working in job shop, aerospace, and general metalworking environments.

The 5623209 belongs to ISCAR's ECI-E5-CF (Chatter Free) series and is suited for medium-length reach milling operations. It is rated for use in steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The 2.1654 inch length of cut and 0.937 inch reach length make it appropriate for medium-depth slotting, profiling, and contouring operations where surface finish and dimensional accuracy are both required in a single tool pass.

Key Features

• Variable index flute spacing (ECI-E5-CF series) reduces chatter and vibration during aggressive cuts
• AlTiN PVD coating for high-temperature resistance and extended tool life in ferrous and hard materials
• 0.06 inch corner radius protects the cutting edge and reduces stress concentration at the tool tip
• Five helical flutes with right-hand cutting and right-hand flute direction for standard CNC spindle use
• Submicron carbide grade substrate for toughness and wear resistance in interrupted and continuous cuts
• Single-end design with straight-cylindrical shank compatible with standard collet and toolholder systems

Compatibility

Designed for use with standard toolholders accepting a 3/8 inch straight-cylindrical shank with h6 shank diameter tolerance and e8 mill diameter tolerance. Rated for primary workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool is clamped in an appropriate collet or endmill holder to the correct torque per the toolholder manufacturer's specification. Confirm runout is within acceptable limits before engaging the cut, as excessive runout will accelerate edge wear on carbide tooling. Do not use this tool in center-cutting operations; it is not designed for plunge entry.