Seco 02730806 Turning Insert Cnmp 431-MF1 TH1000 Carbide

Product Description

The SECO 02730806 is a solid carbide turning insert designed for precision metal cutting in demanding machining environments. Carrying the ANSI designation CNMP431 and ISO code CNMP120404, this insert features an 80-degree diamond (rhombic) shape with a negative rake and neutral hand orientation. It is PVD-coated with a multilayer TiAlSiN finish under manufacturer grade TH1000, providing high wear resistance suited for finishing operations. The MF1 chip breaker geometry supports controlled chip flow during light finishing passes. With a 0.5 inch inscribed circle and a 1/64 inch corner radius (0.0157 inches), it is positioned for high-precision finishing cuts on difficult workpiece materials. Licensed machinists and CNC tooling specialists are the primary installers and users of this insert.

This insert is engineered primarily for superalloys and titanium (ISO material code S) and hardened materials (ISO material code H), with secondary suitability for cast iron (K), stainless steel and heat-resistant alloys (M), and steel (P). It supports boring, facing, and turning applications, making it a multi-use option on CNC lathes and turning centers where finishing tolerances are critical. The insert conforms to both ANSI and ISO standards, ensuring compatibility with standard toolholders designed for CNMP-style inserts. Maximum depth of cut is 0.4921 inches.

Key Features

• TiAlSiN PVD multilayer coating under grade TH1000 for high wear resistance on superalloys and hardened materials
• MF1 chip breaker geometry optimized for finishing operations with controlled chip formation
• 80-degree diamond insert shape with honed cutting edge for precise, repeatable cuts
• 4 cutting edges available per insert, maximizing tool life per unit
• Negative rake and negative side clearance for rigid, stable cutting in clamp, pin, or lever lock toolholders
• Conforms to both ANSI and ISO standards for broad toolholder compatibility

Compatibility

Designed for use in standard CNMP-style toolholders accepting a 0.5 inch inscribed circle insert with clamp, pin, or lever lock holding methods. Compatible toolholders should conform to ANSI and ISO specifications for CNMP431 or CNMP120404 insert seats. Industry standard number CNMP431-MF1; ISO code CNMG120404-MF1.

Installation Notes

Insert replacement and indexing should be performed by a qualified machinist with the machine powered down and the spindle fully stopped. Use the correct torque wrench for the clamping screw per the toolholder manufacturer specifications — do not overtighten. Inspect the toolholder seat and clamping components for wear or debris before seating a new insert. Confirm insert orientation and hand before resuming cutting operations.