Iscar 3399268 Corner Radius End Mill 1/2 in 3 Flute

Product Description

The ISCAR 3399268 is a solid carbide corner radius end mill designed for high-performance material removal in non-ferrous metal applications. It features a 1/2 inch cutting diameter, a 0.06 inch corner radius, and three right-hand spiral flutes with a coarse pitch and 45-degree helix angle. The DLC (Diamond-Like Carbon) PVD coating extends tool life and reduces friction when cutting aluminum, copper, brass, and similar materials. At 4 inches overall length with a 7/8 inch length of cut, this short-series end mill handles both roughing and finishing operations. It is center-cutting, making it capable of plunge entry. The straight-cylindrical 1/2 inch shank fits standard toolholders used on CNC machining centers and manual mills.

This end mill is engineered for non-ferrous metal cutting, including aluminum alloys, copper, and other materials in the N material grade classification. The extended reach design, with a 2-1/8 inch reach length, allows access to deeper features without sacrificing rigidity. The single-end configuration suits production environments and job shops running CNC vertical or horizontal machining centers where repeatable finishing passes and precise corner geometry are required. The ISCAR ECAI-B3-EC series, manufacturer catalog number ECAI-B3 .5-.9/2.1CR06-4EC, is built from submicron carbide grade for consistent edge integrity across production runs.

Key Features

• Solid submicron carbide construction for edge stability in non-ferrous cutting
• DLC PVD coating reduces built-up edge and extends tool life on aluminum and soft metals
• 0.06 inch corner radius blends sharp corners and improves surface finish at part edges
• Center-cutting design allows direct plunge entry without pre-drilling
• Extended reach of 2-1/8 inches provides access to deep pockets and stepped features
• Right-hand cut, right-hand flute spiral with coarse pitch supports chip evacuation in gummy materials

Compatibility

Designed for use with standard straight-bore toolholders accepting a 1/2 inch cylindrical shank. Intended for CNC machining centers and milling machines cutting non-ferrous metals. Part of the ISCAR ECAI-B3-EC series, manufacturer catalog number ECAI-B3 .5-.9/2.1CR06-4EC.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. The shank must be fully seated and secured in a compatible toolholder or collet chuck; verify runout with a dial indicator before production use. Confirm spindle speed and feed rate parameters for the specific workpiece material before engaging the cut. Do not exceed the rated length of cut; overhang beyond the recommended depth increases deflection and risk of tool breakage.