Seco 17002366 Corner Radius End Mill 3/4 in 9 Flute Altin

Product Description

The SECO 17002366 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining applications. Built on the S938R series platform, it features a 3/4 inch diameter with a 0.1200 inch corner radius and nine flutes arranged in a super close pitch configuration. The AlTiN PVD coating provides thermal resistance and wear protection at elevated cutting temperatures. With a 2.25 inch length of cut and a 5 inch overall length, this extended-reach tool is suited for deeper pocket milling and profile work where standard-length tools fall short. Machinists and tool-and-die professionals specify this end mill for roughing and finishing operations in a single setup.

This end mill is intended for use in CNC machining centers and milling machines equipped with standard toolholders accepting a 3/4 inch straight-cylindrical shank. It is engineered for right-hand cutting with right-hand flute direction and a 38 degree helix angle. Primary workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium, covering ISO material codes P, M, K, and S. The extended reach geometry makes it suitable for deep-cavity milling, rib milling, and contoured surface work where axial depth and corner geometry are critical.

Key Features

• 0.1200 inch corner radius with tolerance of plus 0.00100 to minus 0.00100 inch for consistent edge geometry
• 9-flute super close pitch design supports high feed rates and improved surface finish
• AlTiN PVD coating enhances heat resistance for dry or minimal-coolant cutting in hard materials
• Extended reach at 5 inches OAL with 2.25 inches LOC for deep-pocket accessibility
• Micrograin solid carbide substrate delivers rigidity and edge retention in abrasive workpiece materials
• Single-end, non-centercutting design optimized for peripheral and profile milling operations

Compatibility

Designed for use with standard CNC toolholders accepting a 3/4 inch straight-cylindrical shank. Rated for steel, stainless steel, cast iron, superalloys, and titanium workpiece materials per ISO material codes P, M, K, and S.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine spindle fully stopped and locked out per facility lockout/tagout procedures. Ensure the toolholder bore and shank are clean and free of chips before clamping to maintain runout within the specified TIR maximum of 0.0005 inch. Do not use this tool for plunge cuts, as it is a non-centercutting design. Confirm toolholder clamp torque and overhang length per the toolholder manufacturer guidelines before starting the cut.