Seco 03084142 Corner Radius End Mill 1/4 in 4 Flute Altin

Product Description

The SECO 03084142 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining applications. Built on the STR440.2 series platform, this tool features a 0.2500 inch mill diameter, a 0.0200 inch corner radius, and four flutes with a variable helix for improved chip evacuation and reduced chatter. The AlTiN PVD coating extends tool life in high-heat cutting environments. The micrograin carbide substrate provides the hardness and wear resistance required for difficult materials. Machining professionals and CNC operators use this end mill for both roughing and finishing passes in a single setup.

This end mill is engineered for cutting stainless steel, superalloys, titanium, and other hard materials where standard high-speed steel or general-purpose carbide tools fall short. The stub-length configuration and straight-cylindrical shank make it compatible with standard toolholders. The 0.2500 inch length of cut and 2.0000 inch overall length suit it for close-tolerance work in shallow-to-moderate pocket depths. Centercutting geometry allows plunge entry without a pre-drilled pilot hole, adding flexibility in complex toolpaths.

Key Features

• Solid micrograin carbide construction for hardness and edge retention in difficult materials
• AlTiN PVD coating provides high-heat resistance in stainless steel, superalloy, and titanium cuts
• Variable helix design reduces harmonic vibration and improves surface finish
• 0.0200 inch corner radius protects the cutting edge and reduces stress concentration at corners
• Centercutting geometry supports direct plunge entry without a pilot hole
• Right-hand flute direction and right-hand cutting for standard CNC spindle operation

Compatibility

Designed for use with standard cylindrical-bore toolholders accepting a 0.2500 inch straight shank. Suitable for CNC machining centers and manual mills where precision carbide end mills are required for stainless steel, superalloys, titanium, and hard material applications.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or CNC operator with the spindle fully stopped and machine power secured per shop lockout/tagout procedures. Ensure the toolholder bore and shank are clean and free of chips before seating the tool. Consult the toolholder manufacturer specifications for proper torque and runout limits. Confirm TIR does not exceed 0.0005 inch after clamping to maintain cutting performance and tool life.