Seco 02959943 Turning Insert DNMG433-M3 TP2501 Carbide

Product Description

The SECO 02959943 is a solid carbide turning insert in the DNMG-M3 series, designed for general-purpose external and internal turning operations on CNC lathes and turning centers. It carries a CVD-applied Duratomic multilayer coating of TiCN, Al2O3, and Cr, providing wear resistance and thermal stability during high-output cutting. The insert features a 55-degree diamond shape, a neutral hand orientation, and a chamfered and honed cutting edge for controlled entry and extended edge life. With four usable cutting edges per insert, it delivers consistent performance across production runs targeting steel, stainless steel, and cast iron workpieces.

This insert is suited for medium to semi-finish turning applications in both residential shop and industrial production environments. It is used across back turning, boring, facing, and standard turning operations. The M3 chip breaker geometry manages chip flow effectively in steel and stainless steel cuts, reducing the risk of built-up edge and chip recutting. Licensed machinists and CNC operators working in job shops, precision machining facilities, and OEM manufacturing environments are the primary users of this insert.

Key Features

• CVD Duratomic coating — TiCN, Al2O3, and Cr layers for wear and heat resistance
• 55-degree diamond insert shape with DNMG-M3 geometry
• Four cutting edges per insert for extended tool economy
• M3 chip breaker optimized for steel and stainless steel chip control
• Chamfered and honed cutting edge style for stable entry and reduced chipping
• Compatible holding methods: clamp, pin, and lever lock toolholders
• Meets ANSI and ISO standards; ISO code DNMG150412-M3

Compatibility

Designed for use with DNMG-style clamp, pin, and lever lock toolholders conforming to ANSI and ISO standards. Primary workpiece material is steel (ISO material code P); secondary workpiece materials include stainless steel (M) and cast iron (K). Recommended material grades P10, P20, P30, and P35.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified seating hardware for the toolholder style — clamp, pin, or lever lock — to ensure proper insert seating and prevent movement under cutting load. Inspect the insert pocket and seating surface for chips or debris before each insert change.