Sandvik Coromant 5726159 Turning Insert CPMT32.50-MF 1125

Product Description

The SANDVIK COROMANT 5726159 is a solid carbide turning insert in the CoroTurn 111 series, designed for precision external and internal turning operations on CNC lathes. The insert carries an ISO designation of CPMT 09 T3 02-MF 1125 and features a TiAlN plus AlCr2O3 dual-layer coating applied via PVD process, delivering hardness and oxidation resistance at the cutting edge. The 80-degree diamond shape (Insert Shape Code C) provides a strong, versatile cutting geometry suited to profiling and general turning. The MF chip breaker geometry is optimized for light-to-medium cutting depths, promoting controlled chip formation and reducing heat buildup at the workpiece interface.

This insert is intended for turning steel as its primary workpiece material, with secondary suitability for stainless steel, superalloys, and titanium. It fits applications in precision machining environments where tight tolerances and surface finish consistency are required. The neutral hand orientation makes it adaptable to both right-hand and left-hand tool holders. It is installed by licensed machinists and CNC operators in production shops, job shops, and maintenance machining environments. The screw-holding method ensures positive seating in compatible CoroTurn 111 toolholders, reducing insert movement during interrupted or continuous cuts.

Key Features

• TiAlN and AlCr2O3 PVD coating for wear resistance and thermal stability during steel and superalloy cutting
• 80-degree diamond insert shape (Code C) for versatile profiling and turning geometry
• MF chip breaker optimized for light-to-medium depth-of-cut applications with controlled chip evacuation
• Screw-clamped holding method (Code P clearance, Code M tolerance) for secure, repeatable seating
• Neutral hand insert compatible with both right-hand and left-hand CoroTurn 111 toolholders
• Two cutting edges per insert for extended tool life value per unit

Compatibility

Designed for use with CoroTurn 111 series toolholders accepting CPMT-style inserts with a 3/8-inch inscribed circle, screw-on mounting, and P clearance geometry. Confirmed primary workpiece material is steel; secondary materials include stainless steel, superalloy, and titanium per manufacturer data.

Installation Notes

This insert is installed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct Torx or hex key driver specified for the CoroTurn 111 screw-clamp system — do not overtighten the clamping screw by feel alone; follow the toolholder manufacturer's fastener procedure. Inspect the insert pocket seat and clamping screw for damage before seating a new insert to ensure proper contact and prevent premature edge failure.