Sandvik Coromant 5740378 Square-shoulder Face Mill 2.5in

Product Description

The SANDVIK COROMANT 5740378 is an indexable square-shoulder face mill designed for precision shoulder milling operations on machining centers and milling machines. This cutter features a 2-1/2 inch (63.50 mm) maximum cutting diameter and accepts 5 R590-1105.. style inserts secured by clamp and screw holding. The 90-degree lead angle produces true square shoulders, while the positive rake geometry reduces cutting forces and extends insert life. Through-coolant capability is built in, delivering coolant directly to the cutting zone for improved chip evacuation and thermal control. Toolholder material is steel. Installed by machinists and CNC operators in production shop environments.

The 5740378 is suited for close-pitch square-shoulder milling in ferrous and non-ferrous materials where a true 90-degree wall is required. The CoroMill Century series cutter style RA590 is commonly applied in both roughing and semi-finishing passes on vertical machining centers. The 3/4 inch arbor hole diameter and keyway width of 0.3839 inches fit standard arbor toolholding setups. Right-hand cutting direction is standard. This cutter is appropriate for production environments requiring consistent, repeatable shoulder profiles across moderate to high volumes.

Key Features

• 2-1/2 inch maximum cutting diameter with close-pitch 5-insert configuration for high metal removal rates
• 90-degree lead angle produces true square shoulders in a single pass
• Positive rake geometry reduces cutting forces and extends insert life
• Through-coolant design delivers coolant directly to the cutting zone
• Compatible insert style R590-1105.. secured by clamp and screw for repeatable edge positioning
• Steel toolholder body with 3/4 inch arbor hole and integral keyway for secure arbor mounting

Compatibility

Designed for use with R590-1105.. compatible inserts (Complete Insert Compatibility: R590-1105..). Cutter style RA590 in the CoroMill Century series. Fits 3/4 inch arbor toolholding systems with a 9.75 mm keyway.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's spindle and arbor torque procedures. Ensure the machine spindle is fully stopped and locked out before mounting or removing the cutter. Verify arbor fitment and keyway engagement before tightening. Inspect insert pockets and seating surfaces for chips or debris prior to insert installation.