Seco 02712689 Corner Radius End Mill 1/4 in 3 Flute Carbide

Product Description

The SECO 02712689 is a solid carbide corner radius end mill designed for precision milling in demanding machining environments. It features a 0.25 inch mill diameter, a 0.5 inch length of cut, and a 0.0150 inch corner radius that reduces stress concentration at the cutting edge and extends tool life on difficult materials. The 3-flute, right-hand spiral geometry runs at a 48-degree high helix angle, promoting efficient chip evacuation and smooth cutting action. The SIRON-A coating provides thermal and wear resistance suited to high-speed applications. This tool is single-end and centercut, making it capable of both peripheral and plunge milling operations. Machinists and CNC operators working in job shops, aerospace, and production environments will find this tool well-suited to precision finishing and light roughing passes.

The 02712689 is built for use on steel, stainless steel, cast iron, hard materials, high-temperature alloys, and non-ferrous metals, covering a wide range of workpiece materials encountered in modern machining. Its short length-of-cut classification and straight cylindrical shank with a 0.25 inch shank diameter make it compatible with standard end mill holders and collet chucks. This end mill is part of the SECO JS553 series, which targets applications where corner integrity and surface finish are critical. It is appropriate for CNC machining centers handling both roughing and finishing operations where tool deflection must be minimized.

Key Features

• 0.0150 inch corner radius reduces edge chipping and improves surface finish on sharp-shouldered features
• SIRON-A coating delivers high heat and wear resistance for extended tool life in ferrous and hard materials
• 48-degree high helix angle promotes aggressive chip evacuation and reduced cutting forces
• Solid micrograin carbide construction provides rigidity and edge retention across a wide material range
• Centercut geometry enables direct plunge entry without a pre-drilled pilot hole
• Right-hand flute direction and right-hand cutting action with no coolant-through requirement for versatile setup

Compatibility

Designed for use on steel, stainless steel, cast iron, hard materials, high-temperature alloys, and non-ferrous metals. Compatible with standard 0.25 inch straight-cylindrical end mill holders and collet chucks. Part of the SECO JS553 series. Manufacturer catalog reference: 5530250R015Z3.0SIRON-A.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with CNC tooling setup and cutting parameter selection. Ensure the spindle is fully stopped and machine is powered down before loading or removing the tool from the holder. Verify holder runout against the rated TIR maximum of 0.0004 inches before commencing cuts. Follow machine manufacturer guidelines and applicable shop safety codes when setting speeds, feeds, and depth of cut for the workpiece material.