Sandvik Coromant 5726091 Turning Insert Cpmt Coroturn 111

Product Description

The SANDVIK COROMANT 5726091 is a solid carbide turning insert designed for precision metal cutting in CNC lathe and turning center applications. Carrying the ISO designation CPMT 09 T3 04-UM 1125, this insert features an 80-degree diamond shape with a neutral hand orientation and a 1/64 inch (0.0156 inch) corner radius. The grade 1125 substrate is coated with TiAlN and AlCr2O3 via a PVD coating process, providing wear resistance and thermal stability during interrupted and continuous cuts. The UM chip breaker geometry is engineered for chip control across a range of depths of cut and feed rates. The insert holds tolerance code M with clearance code P and is held in place by a screw-type clamping method.

This insert is part of the CoroTurn 111 series and is intended for turning operations on steel as the primary workpiece material. Secondary applications cover stainless steel, superalloys, and titanium, placing it within ISO material groups P, M, and S. It is suited for both production and job-shop environments where consistent surface finish and tool life on ferrous and difficult-to-machine materials are required. Licensed machinists and CNC operators working in aerospace, automotive, and general machining will find this insert applicable across a wide range of turning scenarios.

Key Features

• Grade 1125 solid carbide substrate with TiAlN and AlCr2O3 PVD coating for thermal and wear resistance
• 80-degree diamond insert shape (shape code C) for versatile profiling and turning passes
• UM chip breaker geometry for effective chip control across steel and superalloy cuts
• Screw-mount clamping method (clearance code P, tolerance code M) for secure, repeatable seating
• 2 cutting edges per insert, neutral hand orientation
• ISO designation CPMT 09 T3 04-UM 1125 for cross-reference and toolholder matching

Compatibility

Designed for use in CoroTurn 111 series screw-clamp toolholders accepting CPMT-style inserts with a 3/8 inch inscribed circle. Compatible with ISO material groups P (steel), M (stainless steel), S (superalloy and titanium) workpiece materials as designated in the product specifications.

Installation Notes

Installation is performed by CNC machinists and toolroom technicians. Before changing inserts, confirm the machine spindle is fully stopped and the turret is indexed to a safe position. Use the appropriate Torx or hex key to seat the clamping screw to the toolholder manufacturer's specified torque range for CPMT screw-mount inserts. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert to ensure accurate and repeatable tool nose positioning.