Seco 74050197 Turning Insert CNMP431-MF1-24 890 Carbide

Product Description

The SECO 74050197 is a solid carbide, uncoated turning insert designed for precision metal removal in demanding machining applications. Manufactured to the CNMP431-MF1-24 designation with manufacturer grade 890, this insert carries an 80-degree diamond shape, a 0.5-inch inscribed circle, and a 1/64-inch (0.0157 inch) corner radius. The MF1 chip breaker geometry and honed cutting edge style make it particularly suited for finishing and semi-finishing passes. It is installed and used by machinists and CNC operators working with high-performance turning, boring, and facing operations.

This insert is engineered primarily for superalloys and titanium (ISO material code S), with secondary suitability for steel, cast iron, and non-ferrous materials (ISO codes M, K, N, H). Typical applications include external turning, facing, and boring operations on CNC lathes and turning centers where tight tolerances and consistent chip control are required. The negative rake geometry and neutral hand orientation support stable cutting across a wide range of workpiece configurations. The ISO equivalent designation is CNMG120404-MF1, and the insert meets both ANSI and ISO standards.

Key Features

• 80-degree diamond insert shape (shape code C) with negative rake for high edge strength
• MF1 chip breaker geometry optimized for finishing cuts on superalloys and titanium
• Honed cutting edge style for improved edge integrity and reduced chipping risk
• 4 cutting edges per insert for extended tool life and cost efficiency
• Compatible with clamp, pin, and lever lock insert holding methods
• Meets ANSI and ISO standards; ISO equivalent CNMG120404-MF1

Compatibility

Designed for use in CNMP-style toolholders that accept a 0.5-inch inscribed circle, 3/16-inch thick, 80-degree diamond insert with neutral hand orientation. Compatible holding methods include clamp, pin, and lever lock systems. Verify toolholder specifications against insert size code 431 and clearance code N before installation.

Installation Notes

Insert installation should be performed by a qualified machinist or CNC technician with the machine fully powered down and in a safe, locked-out state. Ensure the toolholder pocket is clean and free of chips or debris before seating the insert. Follow the toolholder manufacturer's clamping torque guidelines for the specific clamp, pin, or lever lock system in use. Inspect the cutting edge for damage before each use and index or replace the insert when wear is detected to maintain workpiece tolerance.