Seco 17002069 Corner Radius End Mill 1/2 in 4 Flute Tialn

Product Description

The SECO 17002069 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. It features a 1/2 inch mill diameter with a 0.0300 inch corner radius, a 4-flute geometry, and a TiAlN coating for extended tool life under high-heat cutting conditions. The cutter runs in a right-hand cutting direction with a variable helix and variable index configuration, which helps reduce chatter and improve surface finish. With a 5/8 inch length of cut and a 3-1/8 inch extended reach, this end mill suits deep-pocket and high-reach operations. It is single-end and centercutting, allowing plunge entry directly into the workpiece. Licensed machinists and CNC operators in job shops and production environments are the primary users.

This end mill is built for milling stainless steel as its primary workpiece material, where the TiAlN coating provides heat resistance and wear protection at elevated cutting temperatures. The extended reach and 5 inch overall length make it suitable for deep-cavity profiling, contouring, and finish milling passes on stainless components. The Weldon flat shank with a 1/2 inch shank diameter provides positive drive and reduces pullout risk in high-torque cuts. The 0.4800 inch neck diameter allows clearance in tight areas without sacrificing rigidity. Series STRN440 identifies this tool within the SECO extended-reach carbide end mill family.

Key Features

• 0.0300 inch corner radius with tolerance of plus 0.00100 to minus 0.00100 inch for consistent edge prep
• TiAlN coating for high-temperature wear resistance in stainless steel and similar hard materials
• Variable helix and variable index geometry reduces vibration and chatter during aggressive cuts
• Extended reach design with 3-1/8 inch reach length suits deep-cavity and long-overhang applications
• Centercutting capability allows direct plunge entry without pre-drilling
• Weldon flat shank provides positive drive and minimizes pullout in high-torque operations

Compatibility

Designed as an OEM-style solid carbide corner radius end mill in Series STRN440, suitable for use in standard 1/2 inch end mill holders or Weldon-style side-lock holders. Primary workpiece material is stainless steel.

Installation Notes

Installation is performed by CNC machinists or manual mill operators using a compatible 1/2 inch Weldon flat side-lock holder; verify holder runout before engaging the cut. Ensure the spindle is fully stopped and the machine is in a safe state before tool changes. Do not exceed the tool manufacturer's recommended speeds and feeds for stainless steel to avoid premature coating wear or edge chipping. Inspect the corner radius for wear regularly, as corner radius end mills are sensitive to chipping at the corner during interrupted cuts.