Seco 02628260 Indexable Square-shoulder End Mill 3/4 in

Product Description

The SECO 02628260 is an indexable square-shoulder end mill designed for precision milling operations in metal-cutting applications. Part of the Super Turbo series, this tool features a 3/4-inch cutting diameter and a 90-degree lead angle, producing true square shoulders in a single pass. It accepts XO.X 1204.. style inserts secured by screw clamp and supports through-coolant delivery for extended tool life and improved chip evacuation. With a maximum depth of cut of 0.433 inches and a rated speed of 23,200 RPM, it is well suited for high-productivity roughing and finishing passes. Machinists and tooling professionals install this holder on compatible CNC machining centers and milling machines.

This toolholder is used in CNC milling environments where square-shoulder profiling, face milling, and slotting operations are required. The Weldon flat shank provides positive drive and is compatible with standard Weldon-style collets and end mill holders. The R217.69-12A cutter style designation identifies its place within the SECO indexable milling system. It is appropriate for both horizontal and vertical machining center setups handling steel, cast iron, and similar workpiece materials.

Key Features

• 3/4-inch cutting diameter with 90-degree lead angle for true square-shoulder milling
• Through-coolant capable for improved chip evacuation and thermal management
• Accepts XO.X 1204.. insert style secured via screw clamp for repeatable insert indexing
• Weldon flat shank with 3/4-inch shank diameter for positive rotational drive
• Maximum rated speed of 23,200 RPM supports high-productivity cutting parameters
• 2-flute, 2-insert configuration balances cutting force and material removal rate

Compatibility

Designed for use with XO.X 1204.. series inserts and identified by ISO number R217.69-00.75-3-12-2A. Compatible with Weldon-style end mill holders accepting a 3/4-inch shank.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the spindle fully powered down and locked out per facility LOTO procedures. Ensure the Weldon flat is properly aligned with the set screw in the holder before torquing. Verify through-coolant passages are clear and confirm insert seating and screw torque before initiating a cut. Consult the machine tool manual for maximum permissible RPM before programming spindle speed.