Sandvik Coromant 5739315 Square-shoulder End Mill 1 in

Product Description

The SANDVIK COROMANT 5739315 is a 1-inch indexable square-shoulder end mill in the CoroMill 390 series, designed for high-precision milling in ferrous and non-ferrous materials. It accepts three R390-11 series inserts secured by screw clamping and delivers a maximum depth of cut of 10.01 mm (0.394 inches). The tool features through-coolant capability to extend insert life and improve chip evacuation during demanding cuts. Built from steel with a Weldon flat shank, this end mill is suited for CNC machining centers operating at up to 36,100 RPM. It is installed and operated by machinists and tooling technicians in production and job-shop environments.

This end mill is designed for square-shoulder milling operations where 90-degree lead angle cutting is required. The ramping capability allows helical interpolation entry into workpieces, reducing the need for pre-drilled pilot holes. With a 1-inch cutting diameter, 3.75-inch overall length, and 1-inch Weldon flat shank, it fits standard milling chucks and toolholders sized for 1-inch shanks. It is well-suited to face milling, slotting, and shoulder milling in light to medium material removal applications on vertical and horizontal machining centers.

Key Features

• 1-inch cutting diameter with 90-degree lead angle for true square-shoulder profiles
• Maximum depth of cut: 10.01 mm (0.394 inches)
• Accepts three R390-11 series indexable inserts with screw clamping
• Through-coolant design improves chip removal and insert longevity
• Ramping-capable end mill type supports helical entry without pre-drilling
• Maximum spindle speed: 36,100 RPM

Compatibility

Compatible with R390-11 series indexable inserts. Fits standard toolholders and milling chucks with a 1-inch bore designed for Weldon flat shank tooling. ISO designation: RA390-025M25-11M.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the machining center before mounting or changing inserts or the tool body. Ensure the Weldon flat is fully seated against the setscrew in the toolholder to prevent axial pullout under cutting loads. Verify coolant passages are clear before resuming through-coolant operation, and confirm insert torque is applied per the insert manufacturer's guidelines using the appropriate Torx or hex key.