Seco 02959844 Turning Insert VNMG332-MF2 TP2501 Carbide

Product Description

The SECO 02959844 is a VNMG332-MF2 indexable turning insert manufactured from solid carbide and finished with a CVD-applied Duratomic multilayer coating of TiCN, Al2O3, and Cr. Carrying grade designation TP2501, this insert is designed for negative-rake, neutral-hand turning operations on steel and stainless steel workpieces. The 35-degree diamond shape (ANSI/ISO style V) delivers a sharp, stable cutting geometry, while the MF2 chip breaker controls chips effectively during finishing and medium turning passes. Four usable cutting edges reduce cost per edge. The chamfered and honed cutting edge style improves edge toughness and extends tool life in interrupted or variable-depth cuts.

This insert is suited for CNC turning centers and manual lathes running steel (ISO material group P), stainless steel (group M), and cast iron (group K) workpieces. Recommended material grades P10, P20, P30, and P35 cover a broad range of carbon, alloy, and tool steels. Typical applications include back turning, facing, profiling, and general OD turning. The MF2 chip breaker geometry performs best at light-to-medium depths of cut and moderate feed rates, making it a common choice for finish and semi-finish passes where surface quality and dimensional control are the priorities.

Key Features

• CVD Duratomic multilayer coating (TiCN, Al2O3, Cr) for wear and crater resistance on steel and stainless
• 35-degree diamond insert shape (ANSI VNMG332 / ISO VNMG160408) with negative rake and 0-degree relief angle
• MF2 chip breaker optimized for back turning, facing, profiling, and general turning operations
• Four cutting edges per insert; compatible with clamp, pin, and lever-lock toolholding systems
• Chamfered and honed cutting edge for improved toughness on interrupted cuts
• Meets ANSI and ISO dimensional standards for drop-in replacement in standard VNMG toolholders

Compatibility

Designed for use in standard VNMG-style negative-rake toolholders that accept clamp, pin, or lever-lock insert retention. Compatible with ISO and ANSI VNMG160408 / VNMG332 seat geometries. Primary workpiece material is steel (P group); secondary materials are stainless steel (M group) and cast iron (K group).

Installation Notes

Installation is performed by a machinist or toolroom technician following standard indexable-insert procedures. Ensure the toolholder pocket and seating pad are clean and free of chips before seating the insert. Power down and lock out the machine spindle before indexing or replacing any cutting insert. Follow the toolholder manufacturer's clamping torque specifications and do not overtighten the clamp screw, as carbide inserts are brittle and can crack under uneven clamping loads.