Sandvik Coromant 5739323 Square-shoulder End Mill 1 in

Product Description

The SANDVIK COROMANT 5739323 is an indexable square-shoulder end mill built around the CoroMill 390 platform. It carries a 1-inch cutting diameter and accepts three R390-11 series inserts secured by screw-clamp holding. The tool features through-coolant delivery to manage heat and chip evacuation at the cutting zone. Maximum depth of cut is 10.01 mm (0.394 inches), making it suited for productive shoulder milling and ramping operations in steel and other machinable materials. The steel body and cylindrical shank are sized for standard milling spindle toolholders. This tool is typically installed and operated by CNC machinists and toolroom professionals in job-shop and production environments.

This end mill is designed for square-shoulder milling, ramping, and slotting applications on machining centers. The 90-degree lead angle produces true square shoulders without secondary cleanup passes. With a 1-inch shank diameter and 8-inch overall length, it fits setups requiring extended reach or deeper cavity work. The three-insert configuration balances material removal rate with manageable cutting forces. Through-coolant capability makes it particularly effective in applications where chip packing and thermal buildup are concerns, such as pocketing in steel or stainless.

Key Features

• CoroMill 390 platform with 90-degree lead angle for true square-shoulder cuts
• Accepts three R390-11 series indexable inserts with screw-clamp retention
• Through-coolant delivery for chip evacuation and thermal control
• Ramping-capable end mill style for pocket entry without pre-drilled holes
• Maximum depth of cut of 10.01 mm (0.394 inches) per pass
• Steel body construction with 1-inch cylindrical shank

Compatibility

Designed for use with R390-11 series indexable inserts. ISO designation RA390-025O25L-11M confirms compatibility within the CoroMill 390 tooling system. Verify spindle interface and toolholder bore before mounting.

Installation Notes

Installation should be performed by a qualified machinist familiar with CNC milling toolholder assembly. Ensure the machine spindle is fully stopped and the tool carousel or turret is in a safe state before mounting or removing the tool. Torque the insert clamping screw to the value specified in the SANDVIK COROMANT insert installation documentation for R390-11 inserts. Confirm runout and tool projection measurements at setup before cutting.