Seco 75072183 Indexable Square-shoulder End Mill

Product Description

The SECO 75072183 is an indexable square-shoulder end mill designed for precision milling operations in metalworking and machining environments. Built on the R417.19 toolholder platform, this end mill features a 0.75-inch cutting diameter, a 0.75-inch Weldon flat shank, and an overall length of 4.33 inches. It accepts SPMX 0602-series inserts held in place by a screw-lock method, providing reliable clamping under high-speed cutting conditions. With a 90-degree lead angle and a maximum depth of cut of 0.2 inches, this tool is engineered for true square-shoulder profiling and facing passes. It is installed by machinists and CNC toolroom technicians.

This end mill is suited for square-shoulder milling applications on vertical and horizontal machining centers as well as manual knee mills equipped with appropriate spindle tooling. The Weldon flat shank provides positive drive engagement, making it a practical choice for high-torque roughing and finishing passes where shank slippage is a concern. Its 2-flute, single-insert configuration keeps insert cost low for short-run and prototype work. Maximum spindle speed is rated at 32,500 RPM, supporting both conventional and climb milling strategies on a range of ferrous and non-ferrous workpiece materials.

Key Features

• R417.19 toolholder platform with ISO designation R417.19-00.75-3
• 90-degree lead angle for true square-shoulder profiling and facing
• Weldon flat shank for positive, slip-resistant drive engagement
• Screw-lock insert holding method for secure, repeatable insert indexing
• Compatible with SPMX 060204, SPMX 0602AP, and APT insert styles
• Rated to 32,500 RPM for high-speed machining center use

Compatibility

Compatible with SPMX 060204, SPMX 0602AP, and APT insert styles. Designed for use with the R417.19 toolholder platform.

Installation Notes

Installation is performed by a qualified machinist or CNC toolroom technician. Before mounting or removing the end mill, ensure the machine spindle is fully powered down and locked out per applicable OSHA lockout-tagout procedures. The Weldon flat shank requires a matching side-lock end mill holder torqued to the holder manufacturer's specification. Inspect the insert pocket and seating surfaces for chips or debris before indexing or replacing inserts.