Sandvik Coromant 5752721 Turning Insert TCMT222-MM 1125

Product Description

The SANDVIK COROMANT 5752721 is a solid carbide turning insert in the TCMT222-MM 1125 designation, part of the CoroTurn 107 series. This triangular insert features a 60-degree included angle, a 1/4-inch inscribed circle, and a 1/32-inch corner radius. The 1125 grade substrate is coated with TiAlN and AlCr2O3 via a PVD process, making it well-suited for high-heat, high-wear turning operations. With a neutral hand orientation and an MM chip breaker geometry, it manages chip control across a range of cutting conditions. Licensed machinists and CNC turning specialists install this insert in compatible tool holders for precision external turning applications.

This insert is designed primarily for turning steel and is also rated for stainless steel, superalloy, and titanium workpiece materials. The MM chip breaker geometry is optimized for medium machining conditions on these material groups. It fits screw-lock style TCMT tool holders with a 2.80 mm hole diameter. Typical applications include external profile turning, shoulder turning, and finishing-to-semi-finishing passes on CNC lathes and turning centers in job shop and production machining environments.

Key Features

• TCMT insert style with 60-degree triangle shape and neutral hand orientation
• 1125 grade with TiAlN and AlCr2O3 PVD coating for wear and heat resistance
• MM chip breaker geometry for medium-condition chip control
• 1/4-inch inscribed circle and 1/32-inch corner radius for precise cutting geometry
• Rated for primary use on steel; secondary use on stainless steel, superalloy, and titanium
• 3 cutting edges per insert for extended tool life per unit

Compatibility

Designed for use in TCMT-style screw-lock turning tool holders compatible with the CoroTurn 107 series. ISO designation is TCMT 11 03 08-MM 1125. Consult tool holder specifications to confirm bore and seating compatibility before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Always power down and lock out the machine before changing inserts. Seat the insert fully against the pocket and torque the clamping screw to the tool holder manufacturer's specification using the correct Torx or hex key. Inspect the insert pocket and shim for damage or debris before seating a new insert.