Seco 75054808 Square-shoulder End Mill 1.5in 4 Flute

Product Description

The SECO 75054808 is an indexable square-shoulder end mill designed for precision milling operations in metalworking and machining environments. Built around the R215.59-08.4 cutter style, it accepts CCMX 08T3 and XC.X 13T3 inserts secured by screw-clamp retention, accommodating up to 20 inserts across 4 flutes. The tool features a 1.5-inch cutting diameter, a maximum depth of cut of 2.25 inches, and a 1.5-inch Weldon flat shank that provides reliable torque transfer in standard milling chucks and holders. Overall length is 6.19 inches. This end mill is installed and serviced by CNC machinists and toolroom technicians working with ferrous and non-ferrous stock.

This end mill suits face milling, shoulder milling, and slotting applications where a true 90-degree lead angle is required for square-shoulder profiles. The Weldon flat shank configuration makes it compatible with standard side-lock tool holders commonly found on vertical machining centers and horizontal mills. With a maximum spindle speed of 11,900 RPM, it is suited for both roughing and semi-finishing passes in production and job-shop environments. The usable length of 3.78 inches allows access to deeper features without requiring extended-reach tooling.

Key Features

• 90-degree lead angle delivers true square-shoulder milling profiles
• Accepts CCMX 08T3 and XC.X 13T3 indexable inserts with screw-clamp retention
• Rated to 11,900 RPM maximum spindle speed
• Weldon flat shank provides positive drive and reduces slip under heavy cuts
• 4-flute design with 20 total insert positions for high metal-removal rates
• No coolant-through configuration — external coolant application required

Compatibility

Compatible with CCMX 08T3 and XC.X 13T3 indexable inserts. Designed for use with standard side-lock Weldon flat tool holders accepting a 1.5-inch shank diameter.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the control is in E-stop before mounting or removing the tool holder. Torque the side-lock set screw against the Weldon flat per the tool holder manufacturer's specification. Verify insert seating and screw torque before initiating a cut, and confirm the programmed spindle speed does not exceed 11,900 RPM for this tool.