Seco 02959919 Turning Insert CNMG542-M3 TP2501 Carbide

Product Description

The SECO 02959919 is a CNMG-style indexable turning insert designed for precision metal removal in steel, stainless steel, and cast iron applications. It carries the TP2501 manufacturer grade with a Duratomic CVD-applied multilayer coating of TiCN, Al2O3, and Cr, engineered to extend tool life under demanding cutting conditions. The insert features an 80-degree diamond shape (CNMG160608-M3 ISO code), a neutral hand orientation, a chamfered and honed cutting edge, and the M3 chip breaker geometry for general-purpose roughing and medium turning. Four usable cutting edges per insert are available, and the part accepts clamp, pin, or lever lock holding methods. Weight is 0.04 pounds.

This insert is suited for facing, boring, and turning operations on CNC lathes and turning centers in job shop and production environments. Primary workpiece material is steel (ISO code P), with secondary suitability for stainless steel (M) and cast iron (K). Material grades P10, P20, P30, and P35 are within the recommended application range. Licensed machinists, tool-and-die specialists, and CNC operators in metalworking shops are the typical end users. The M3 chip breaker geometry performs across moderate to heavy depths of cut, making it a practical choice for both production turning and one-off turning jobs.

Key Features

• TP2501 grade with Duratomic CVD multilayer coating (TiCN, Al2O3, Cr) for extended tool life in steel cutting
• 80-degree diamond insert shape with negative rake and 0-degree relief angle (clearance code N)
• M3 chip breaker with chamfered and honed cutting edge for controlled chip formation
• Four cutting edges per insert (multi-tipped) for maximum value per unit
• Compatible with clamp, pin, and lever lock toolholding systems
• Multi-use geometry supports boring, facing, and turning in a single insert style

Compatibility

Designed to fit CNMG-style toolholders that accept a 5/8 inch inscribed circle insert with a 1/4 inch thickness and a 0.25 inch center hole. Conforms to ANSI and ISO standards; ISO designation CNMG160608-M3 and industry standard number CNMG542-M3.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Always index or replace inserts with the machine powered down and the spindle fully stopped. Use the appropriate torque wrench and manufacturer-specified clamping screw when seating the insert to ensure consistent clamping force without over-torquing the lock mechanism. Inspect the insert pocket and seating surface for chips or debris before seating a fresh edge.