Seco 02959917 CNMG433-M3 TP2501 Turning Insert Carbide

Product Description

The SECO 02959917 is a CNMG433-M3 indexable turning insert manufactured from solid carbide and finished with a CVD-applied Duratomic multilayer coating consisting of TiCN, Al2O3, and Cr. It carries manufacturer grade TP2501, an 80-degree diamond shape with a neutral hand, and a chamfered and honed cutting edge for reliable chip control across a wide range of cutting conditions. The insert features four cutting edges with an M3 chip breaker geometry, making it well-suited for general-purpose steel and stainless steel turning at moderate to aggressive depths of cut up to 0.4606 inches. Qualified machinists and CNC turning specialists are the primary installers of this insert.

This insert is designed for use in boring, facing, and turning operations on steel (ISO P), stainless steel (ISO M), and cast iron (ISO K) workpieces. It fits within the CNMG series toolholders requiring a 1/2-inch inscribed circle insert with clamp, pin, or lever-lock holding methods. Recommended material grades are P10, P20, P30, and P35. The M3 chip breaker geometry supports medium roughing to finishing cuts, making it a versatile choice for job shops and production turning cells running a variety of ferrous materials.

Key Features

• CVD Duratomic multilayer coating (TiCN, Al2O3, Cr) for extended tool life on ferrous materials
• M3 chip breaker geometry supports boring, facing, and turning across P, M, and K ISO material groups
• Four cutting edges per insert with chamfered and honed edge prep for consistent performance
• Neutral hand insert compatible with clamp, pin, and lever-lock toolholder systems
• 80-degree diamond shape with 3/64-inch corner radius balances strength and versatility
• Conforms to ANSI and ISO standards; ISO code CNMG120412-M3, industry standard number CNMG433-M3

Compatibility

Designed for use in CNMG-series toolholders requiring a 1/2-inch (0.5000-inch) inscribed circle insert. Compatible holding methods include clamp, pin, and lever lock. Suitable for steel, stainless steel, and cast iron workpieces per ISO material codes P, M, and K.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Before indexing or replacing inserts, confirm the machine spindle is fully stopped and all power is locked out per facility lockout/tagout procedures. Seat the insert fully in the pocket and tighten the clamping mechanism to the toolholder manufacturer's specified torque using the appropriate torx or hex key. Inspect the insert seat and chip groove for debris before seating a new edge to prevent premature edge failure.