Seco 03275987 Turning Insert CNMP431-MF1 TM2501 Carbide

Product Description

The SECO 03275987 is a solid carbide turning insert in the CNMP-MF1 series, designed for precision finishing operations on CNC lathes and turning centers. It carries the ANSI designation CNMP431-MF1 and ISO code CNMP120404-MF1, with a CVD-applied Duratomic multilayer coating of TiCN, Al2O3, and Cr for extended tool life. The insert features an 80-degree diamond (rhombic) shape, a 0.5-inch inscribed circle, a 1/64-inch corner radius, and a neutral hand orientation. With 4 usable cutting edges and a honed cutting edge style, it delivers consistent performance in finishing passes on steel and stainless steel workpieces.

This insert is suited for finishing applications including boring, facing, and turning on CNC turning centers handling steel (ISO P) and stainless steel (ISO M) workpieces. The MF1 chip breaker geometry is optimized for finishing cuts with light depths of cut and controlled chip formation. Material grades M25, M30, and M35 cover a broad range of stainless steel and steel machining scenarios, making this insert a practical single-choice solution across moderate-wear and high-toughness cutting conditions. It is installed by machinists and CNC operators in job shop and production environments.

Key Features

• Duratomic CVD multilayer coating (TiCN, Al2O3, Cr) for wear resistance on steel and stainless steel
• 80-degree diamond insert shape with 4 cutting edges for efficient edge utilization
• MF1 chip breaker geometry optimized for finishing operations
• Negative rake, negative side clearance (N clearance code) for rigid, stable clamping
• Compatible with clamp, pin, and lever lock insert holding methods
• Honed cutting edge style reduces micro-chipping during stainless steel finishing

Compatibility

Designed as an OEM-style replacement or direct equivalent for toolholders accepting CNMP431 or CNMP120404 geometry inserts with clamp, pin, or lever lock holding methods. Conforms to ANSI and ISO insert standards.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Power down and lock out the machine spindle before seating or indexing the insert. Ensure the toolholder pocket and seating surfaces are clean and free of chips or debris before clamping. Follow the toolholder manufacturer's specified clamping torque and insert-holding method; do not mix clamp types not rated for this insert geometry.