Seco 02959843 Turning Insert VNMG331-MF2 TP2501 Carbide

Product Description

The SECO 02959843 is a VNMG331-MF2 series indexable turning insert manufactured from solid carbide and coated via CVD with a multilayer Duratomic system of TiCN, Al2O3, and Cr. It carries grade designation TP2501 and is designed for external turning, facing, profiling, and back turning operations on CNC and manual lathes. The insert features a 35-degree diamond shape (V), a neutral hand orientation, and an MF2 chip breaker geometry suited for finishing and medium turning applications. With 4 cutting edges and a chamfered and honed cutting edge style, it delivers consistent chip control across its service life. It weighs 0.02 pounds.

This insert is intended for turning operations where the primary workpiece material is steel, with secondary suitability for stainless steel and cast iron. It targets ISO material groups P10, P20, P30, and P35, making it a practical choice for production turning in job shops and manufacturing facilities. Machinists, CNC programmers, and toolroom technicians working with ferrous materials in moderate to heavier stock removal will find the TP2501 grade and MF2 geometry well matched to those conditions. The insert conforms to both ANSI and ISO standards and carries the ISO code VNMG160404-MF2.

Key Features

• CVD Duratomic multilayer coating: TiCN, Al2O3, and Cr for wear resistance and thermal stability
• MF2 chip breaker geometry optimized for finishing to medium-depth turning passes
• 4 usable cutting edges per insert for extended tooling economy
• Chamfered and honed cutting edge style for edge security and surface finish
• Negative rake, 0-degree relief angle (Clearance Code N) with Tolerance Code M
• Compatible with clamp, pin, and lever lock insert holding methods
• Multi-use application: back turning, facing, profiling, and turning

Compatibility

Designed for use in VNMG-style toolholders accepting a 331 insert size with clamp, pin, or lever lock retention. Conforms to ANSI and ISO standard VNMG160404-MF2 geometry. Suitable for toolholders with a maximum depth of cut capacity of at least 0.6142 inches. Primary application is steel (ISO P group); secondary applications include stainless steel (M group) and cast iron (K group).

Installation Notes

Insert seating and indexing should be performed with the machine powered down and the spindle locked. Use the appropriate torque wrench and manufacturer-specified clamping hardware for the toolholder style (clamp, pin, or lever lock) to ensure proper insert retention. Inspect the insert pocket for chips or debris before seating each new cutting edge. Follow shop safety procedures and applicable ANSI machining standards when setting tool offsets after indexing.