Sandvik Coromant 7419139 Corner Radius End Mill 4mm

Product Description

The SANDVIK COROMANT 7419139 is a solid carbide corner radius end mill engineered for demanding material removal in superalloys and titanium. Part of the CoroMill Plura Series 2F340, it features a 4 mm cutting diameter, 0.5 mm corner radius, and a TiAlSiN PVD multilayer coating that resists heat and wear at high cutting speeds. The 4-flute, single-end design with a high-helix, right-hand helical flute geometry promotes efficient chip evacuation during roughing operations. At 57 mm overall length with a 14.5 mm reach and 3.8 mm neck diameter, the extended-reach geometry allows access in deeper cavities while maintaining rigidity. Licensed machinists and CNC tooling technicians install this end mill in toolholder systems for precision machining work.

This end mill is intended for roughing applications in superalloys and titanium — material classes that demand high-performance coatings and stable cutting geometries. The extended reach and reduced neck diameter make it well suited for profiling and slotting in aerospace and industrial components where workpiece access is restricted. The straight-cylindrical shank with h6 tolerance ensures a secure, repeatable fit in collet chucks and shrink-fit toolholders. Normal pitch spacing and fixed helix angle contribute to consistent chip load across all four flutes.

Key Features

• 4 mm cutting diameter with 0.5 mm corner radius for blended transitions and reduced edge chipping
• TiAlSiN PVD multilayer coating optimized for superalloy and titanium cutting temperatures
• High-helix, right-hand helical flutes promote chip flow during roughing passes
• Extended reach with 14.5 mm reach length and 3.8 mm neck diameter for cavity access
• Solid carbide construction with h10 mill diameter tolerance and h6 shank tolerance for dimensional accuracy
• Single-end, non-centercutting design — suited for profiling and peripheral milling, not plunge entry

Compatibility

Designed for use with standard toolholders accepting a 4 mm straight-cylindrical shank. Optimized for machining superalloys and titanium (material code S) in CNC milling applications requiring extended reach geometry.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Ensure the toolholder bore is clean and free of chips before seating the shank to the specified projection length. This end mill is non-centercutting and should not be used for direct plunge cuts. Verify spindle direction is set to right-hand rotation before engaging the cut.