Seco 02959915 CNMG433-M3 Turning Insert Carbide

Product Description

The SECO 02959915 is a CNMG433-M3 series indexable turning insert designed for general-purpose metal cutting on CNC lathes and turning centers. It features a solid carbide substrate with a CVD-applied Duratomic multilayer coating of TiCN, Al2O3, and Cr, which extends cutting edge life under continuous and interrupted cuts. The insert has an 80-degree diamond shape, a 0.5 inch inscribed circle, a 3/64 inch (0.0472 inch) corner radius, and a negative rake geometry. Four usable cutting edges are available per insert. Licensed machinists and CNC operators install this insert in compatible CNMG-style toolholders using a clamp, pin, or lever-lock holding method.

This insert is rated for primary use on steel (ISO material code P) and secondary use on cast iron (ISO material code K), covering a broad range of production turning applications. Suitable operations include turning, facing, and boring. The M3 chip breaker geometry is engineered for medium-depth, general-purpose cuts at moderate feed rates. The Duratomic coating classification targets improved crater wear resistance and thermal stability. This insert conforms to both ANSI and ISO standards, with the corresponding ISO designation CNMG120412-M3.

Key Features

• CVD Duratomic multilayer coating: TiCN, Al2O3, Cr for extended tool life on steel and cast iron
• 80-degree diamond insert shape with negative rake and neutral hand for versatile toolholder compatibility
• M3 chip breaker for medium-depth general-purpose turning, facing, and boring
• Four cutting edges per insert (multi-tipped) to maximize cost-per-edge value
• Chamfered and honed cutting edge style for edge stability under interrupted and continuous cuts
• Compliant with ANSI and ISO standards; ISO code CNMG120412-M3

Compatibility

Designed for use in CNMG-style toolholders that accept clamp, pin, or lever-lock insert holding. Compatible with Grade P01 and P10 material classifications. Suitable for turning, facing, and boring operations on steel and cast iron workpieces.

Installation Notes

Installation is performed by a licensed machinist or CNC tooling technician. Power down and zero-out the spindle before indexing or replacing inserts. Use the appropriate torque wrench for the specific toolholder clamp screw to avoid over-clamping, which can chip the insert. Inspect the toolholder pocket and seating surface for debris or damage before seating the insert, as uneven seating reduces edge life and dimensional accuracy.