Sandvik Coromant 5740199 Square-shoulder End Mill 1-1/4in

Product Description

The SANDVIK COROMANT 5740199 is an indexable square-shoulder end mill built for precision milling in metal-cutting applications. It features a 1.25-inch cutting diameter, a maximum depth of cut of 15.7 mm (0.618 inches), and a 9-inch overall length. The steel body uses a screw-clamped insert holding method and accepts three R390-17.. series inserts. Through-coolant capability supports extended tool life and chip evacuation during demanding cuts. This tool is designed for machinists and CNC operators working in job shops, production machining, and aerospace or general manufacturing environments.

This end mill is suited for square-shoulder milling, ramping, and slotting operations on machining centers and milling machines. The 90-degree lead angle produces true square shoulders in a single pass. The 1.25-inch cylindrical shank fits standard ER and side-lock toolholders common in CNC setups. With a maximum spindle speed of 9000 RPM, it is appropriate for mid-to-high speed cutting strategies on ferrous and non-ferrous materials.

Key Features

• 1.25-inch cutting diameter with a 90-degree lead angle for true square-shoulder profiling
• Maximum depth of cut of 15.7 mm (0.618 inches) per pass
• Accepts three R390-17.. indexable inserts secured by screw clamping
• Through-coolant design for improved chip evacuation and insert longevity
• Ramping-capable end mill type for helical and linear entry strategies
• Maximum spindle speed of 9000 RPM

Compatibility

Designed for use with R390-17.. series indexable inserts. The 1.25-inch cylindrical shank is compatible with standard cylindrical-bore toolholders used in CNC milling applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before changing or indexing inserts. Ensure the shank is fully seated and properly torqued in the toolholder before operation. Verify coolant passages are clear before enabling through-coolant flow.