Seco 02959939 Turning Insert DNMG432-M3 TP1501 Carbide

Product Description

The SECO 02959939 is a DNMG432-M3 series indexable turning insert engineered for steel, cast iron, and hard material applications. Manufactured from solid carbide with a CVD-applied Duratomic multilayer coating — TiCN, Al2O3, and Cr — the insert is assigned manufacturer grade TP1501, placing it in material grades P10 and P20. It features a 55-degree diamond shape with a neutral hand orientation and a chamfered and honed cutting edge. With four cutting edges per insert and a 0.0315-inch corner radius, this insert offers extended tool life in demanding turning, facing, boring, and back-turning operations. The insert is held by clamp, pin, or lever lock toolholders per ANSI and ISO standards.

The 02959939 is suited for CNC lathe operations in industrial machining environments targeting steel as the primary workpiece material, with cast iron and hard materials as secondary applications. Its DNMG geometry and M3 chip breaker are designed to manage chip flow in moderate to heavy material removal conditions. It is identified under ISO code DNMG150408-M3 and industry standard number DNMG432-M3, making direct cross-reference to toolholder seats straightforward for machinists and tooling specialists alike.

Key Features

• CVD Duratomic multilayer coating: TiCN, Al2O3, and Cr for extended wear resistance
• 55-degree diamond insert shape with 4 usable cutting edges
• M3 chip breaker geometry for controlled chip evacuation in steel and cast iron
• Chamfered and honed cutting edge for a balance of strength and sharpness
• Compatible with clamp, pin, and lever lock toolholder holding methods
• Conforms to both ANSI and ISO standards — ISO code DNMG150408-M3

Compatibility

Designed for use in DNMG-series toolholders accepting a 432 insert size with clamp, pin, or lever lock holding methods. Primary workpiece material is steel (ISO material code P); secondary materials include cast iron (K) and hard materials (H). Suitable for turning, facing, boring, and back-turning applications.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torque wrench per toolholder manufacturer specifications when tightening the clamp screw — do not use impact tools. Inspect the toolholder seat and clamping components for wear or debris before seating a new insert to ensure proper contact and runout.