Seco 02688853 Square-shoulder End Mill 1 in 2 Flute

Product Description

The SECO 02688853 is an indexable square-shoulder end mill built for milling operations that demand a true 90-degree lead angle and consistent shoulder accuracy. Part of the Super Turbo series and identified by ISO designation R217.69-01.00-0-12-2AN, this tool accepts two XO.X 1204.. inserts secured by screw clamping. It runs a 1-inch cutting diameter with a maximum depth of cut of 0.433 inches and an overall length of 6.69 inches. Through-coolant capability supports extended tool life and chip evacuation at elevated spindle speeds up to 20,800 RPM. Machinists and tool-and-die professionals working in production environments will find this tool suited to high-feed shoulder and face milling work.

This end mill is designed for square-shoulder milling applications in ferrous and non-ferrous materials where a perpendicular wall-to-floor relationship is required. The 1-inch cylindrical shank with a 5.32-inch shank length accommodates standard toolholder bores in CNC machining centers. The two-insert configuration keeps cutting forces manageable while maintaining material removal rates appropriate for roughing and semi-finishing passes. The 1.37-inch head length provides clearance geometry suited to pocket and contour milling operations.

Key Features

• 90-degree lead angle for true square-shoulder milling
• Accepts two XO.X 1204.. indexable inserts with screw-lock retention
• Through-coolant channels support chip evacuation and insert longevity
• Maximum spindle speed of 20,800 RPM for high-productivity CNC applications
• 1-inch cylindrical shank compatible with standard ER and hydraulic toolholders
• Super Turbo series cutter style R217.69-12A for consistent insert seating

Compatibility

Designed for use with XO.X 1204.. series indexable inserts as specified by SECO for the R217.69-12A cutter style. Confirm insert grade and geometry selection based on workpiece material and cutting parameters.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician familiar with CNC toolholder assembly and insert indexing procedures. Ensure the machine spindle is fully stopped and the control is in an e-stop or tool-change state before mounting or demounting the cutter. Torque insert screws using the appropriate SECO Torx key to seat inserts fully without over-torquing. Verify runout at the cutting diameter with a dial indicator before committing to a production cut.