Seco 02959860 Turning Insert CNMG543-M6 TP2501 Carbide

Product Description

The SECO 02959860 is a solid carbide turning insert in the CNMG543-M6 series, designed for metal-cutting lathe operations including turning, facing, and boring. It carries the TP2501 manufacturer grade and features a CVD-applied Duratomic multilayer coating consisting of TiCN, Al2O3, and Cr for extended wear resistance in interrupted and continuous cuts. The insert has a 5/8 inch inscribed circle, a 3/64 inch corner radius (0.0472 inches), and a 1/4 inch thickness. The 80-degree diamond shape with negative rake geometry suits steel-dominant machining where edge strength matters. Four cutting edges are available per insert, making it a cost-effective option for high-volume turning operations.

This insert is rated primarily for steel (ISO material group P) and secondarily for stainless steel and cast iron (ISO groups M and K). Material grades P10, P20, P30, and P35 are within scope, covering a range from finish to roughing passes. The M6 chip breaker geometry is suited to medium machining conditions. Typical applications include general-purpose OD turning, face turning, and boring on CNC lathes and turning centers in production and job-shop environments. Licensed machinists and CNC operators in metalworking and manufacturing settings install and apply this insert.

Key Features

• CVD Duratomic multilayer coating (TiCN, Al2O3, Cr) for thermal and abrasion resistance
• 80-degree diamond insert shape with negative rake for strong cutting edge geometry
• 4 cutting edges per insert for extended tool life and lower cost per edge
• M6 chip breaker optimized for medium-duty steel and stainless steel operations
• Compatible with clamp, pin, and lever-lock insert holding methods
• Conforms to ANSI and ISO standards; ISO code CNMG160612-M6

Compatibility

This insert conforms to ANSI and ISO standards under ISO designation CNMG160612-M6 and industry standard number CNMG543-M6. It is designed to fit toolholders that accept CNMG-style inserts with clamp, pin, or lever-lock holding methods and a 0.2500 inch hole diameter.

Installation Notes

Installation is performed by qualified machinists or CNC tool setup technicians. Always power down and lock out the machine spindle before seating or indexing inserts. Use the correct torque wrench and insert screw specified by the toolholder manufacturer — do not overtighten the clamping screw. Inspect the insert pocket and seat for debris or damage before mounting to ensure proper seating and runout control.