Seco 02688854 Indexable Square-shoulder End Mill

Product Description

The SECO 02688854 is an indexable square-shoulder end mill designed for precision milling operations in metal cutting environments. Part of the Super Turbo series, it uses the R217.69-12 toolholder style and accepts XO.X 1204 insert style inserts, with full compatibility for XOEX and XOMX insert types secured by screw-clamp holding. The tool features a 1-inch cutting diameter, a maximum depth of cut of 0.433 inches, and a 90-degree lead angle for true square-shoulder profiling. Constructed from steel, it supports through-coolant delivery to manage heat and chip evacuation during high-feed passes. This tool is installed and used by machinists and CNC operators in production and job-shop settings.

The 02688854 is suited for square-shoulder milling, profiling, and slotting applications on ferrous and non-ferrous workpiece materials. Its 3-flute, negative-rake geometry supports aggressive material removal while maintaining stable insert seating. The through-coolant feature makes it well suited for deeper pocketing and finishing passes where thermal management is critical. With a maximum spindle speed of 20,800 RPM, it is compatible with modern CNC machining centers running high-speed milling programs.

Key Features

• 1-inch cutting diameter with 0.433-inch maximum depth of cut for square-shoulder profiling
• 90-degree lead angle produces true 90-degree shoulders in a single pass
• Accepts XO.X 1204 inserts; compatible with XOEX and XOMX insert families
• Through-coolant capability for improved chip evacuation and tool life in deep cuts
• 3-flute, negative-rake design for stable, high-feed indexable milling
• Maximum spindle speed of 20,800 RPM suitable for modern CNC machining centers

Compatibility

Designed for use with the R217.69-12 toolholder style. Compatible inserts include the XO.X 1204 insert style, with full compatibility for XOEX and XOMX insert families. ISO catalog reference: R217.69-01.00-0-12-3AN.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and power is locked out before mounting or removing the toolholder. Verify insert seating and screw torque per the toolholder manufacturer guidelines before initiating a cut. Confirm coolant lines are clear and through-coolant is active before running at elevated RPM.