Sandvik Coromant 5739774 Square-shoulder Face Mill 3 in

Product Description

The SANDVIK COROMANT 5739774 is an indexable square-shoulder face mill designed for precision milling operations in metal-cutting applications. Built on the CoroMill 390 platform, this right-hand cutter accepts seven R390-11.. style inserts held by clamp and screw, delivering a 90-degree lead angle with a positive rake geometry. The maximum cutting diameter is 3 inches (76.20 mm), with a maximum depth of cut of 10 mm (0.3937 inches). The body is machined from steel and is intended for use by machinists and tool-and-die professionals working on CNC machining centers and milling equipment.

This face mill is suited for square-shoulder milling operations on ferrous and non-ferrous workpieces in both production and job-shop environments. The close pitch configuration with seven flutes supports higher feed rates and improved surface finish in finishing and semi-finishing passes. The 1-inch arbor hole diameter and keyway width of 0.3839 inches (9.75 mm) fit standard arbor toolholding systems. Coolant-through capability is not supported on this cutter body.

Key Features

• 90-degree lead angle enables true square-shoulder milling with no axial force component on the shoulder wall
• Seven-insert close-pitch design supports aggressive feed rates in appropriate setups
• Positive rake geometry reduces cutting forces and is well-suited for lighter machine tools
• R390-11.. insert compatibility aligns with the CoroMill 390 insert family
• Right-hand cutting direction; clamp and screw insert retention for secure indexing
• Steel cutter body construction for rigidity and dimensional stability

Compatibility

Compatible with R390-11.. series inserts. Designed for use with standard 1-inch arbor toolholding systems as part of the SANDVIK COROMANT CoroMill 390 platform.

Installation Notes

Installation should be performed by a qualified machinist or tooling specialist familiar with indexable milling cutters. Ensure the machine spindle is fully stopped and locked out before mounting or demounting the cutter body. Verify arbor and keyway engagement before torquing to machine tool manufacturer specifications. Inspect and seat each insert fully before operation; do not run the cutter with unseated or damaged inserts.