Sandvik Coromant 5739114 Ball Nose End Mill 0.5in Coromill 216

Product Description

The SANDVIK COROMANT 5739114 is an indexable ball nose end mill designed for precision contouring, profiling, and 3D milling operations in steel and similar materials. Built around the CoroMill 216 series platform, this tool accepts two RA216-1302 inserts secured by screw clamping. The steel body features a Weldon flat shank for positive, non-slip retention in the spindle. With a 0.5-inch cutting diameter and an overall length of 4.2815 inches, it is engineered for rigidity and controlled chip evacuation in demanding machining environments. Licensed machinists and CNC tooling specialists are the typical end users.

This end mill is suited for semi-finish and finish milling passes on ferrous materials in vertical and horizontal machining centers. The 2-flute indexable configuration allows efficient chip clearance at high spindle speeds up to 21000 RPM. A maximum depth of cut of 0.444 inches supports progressive material removal without excessive radial load. The Weldon flat shank interfaces with standard end mill holders requiring a flat-seat setscrew drive, common in most production shop environments.

Key Features

• CoroMill 216 series platform with screw-clamped RA216-1302 indexable ball nose inserts
• 0.5-inch cutting diameter with 2-flute geometry for efficient chip evacuation
• Maximum depth of cut: 0.444 inches (11.28 mm)
• Maximum spindle speed: 21000 RPM
• Weldon flat shank for positive drive and repeatable runout control
• Steel body construction balances strength and weight at 0.63 pounds

Compatibility

Designed for use with RA216-1302 indexable ball nose inserts in the CoroMill 216 toolholder style designated RA216..Mxx. Confirm insert grade and geometry selection against the specific workpiece material and cutting parameters before use.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholder torque and retention specifications. Power down and lock out the machining center before mounting or removing the tool. Seat the Weldon flat fully against the setscrew in the end mill holder and verify axial and radial runout with a dial indicator before cutting. Follow the insert manufacturer's recommended cutting data for feed rate and depth of cut to avoid insert fracture or premature wear.