Seco 02615999 Vnmg 331-MF4 TS2500 Turning Insert

Product Description

The SECO 02615999 is a solid carbide turning insert in the VNMG 331-MF4 series, designed for precision metal cutting in CNC and manual lathe applications. It features a 35-degree diamond insert shape with a neutral hand orientation and a 0-degree relief angle. The multilayer PVD coating combines TiAlN and TiN for high heat resistance and extended tool life, particularly in difficult-to-machine materials. With an inscribed circle of 0.375 inches and a corner radius of 0.0157 inches, this insert suits finishing and medium-roughing passes. Machinists and tooling specialists install this insert where tight tolerances and surface integrity are required.

This insert is intended for turning, facing, profiling, and back turning operations. Its primary workpiece material is superalloys and titanium (ISO material code S), making it well suited for aerospace and high-temperature alloy components. It also performs in steel (P), stainless steel (M), and cast iron (K) applications. The MF4 chip breaker geometry supports controlled chip formation at moderate feeds and depths, and the chamfered and honed cutting edge style reduces edge chipping in interrupted or variable-hardness cuts. This insert is sold individually but requires a minimum order quantity of 10 units.

Key Features

• 35-degree diamond (V) insert shape with neutral hand for versatile toolpath orientation
• Multilayer PVD TiAlN and TiN coating for high thermal stability and wear resistance in superalloys and titanium
• MF4 chip breaker geometry for controlled chip evacuation in finishing and medium-roughing passes
• Chamfered and honed cutting edge style reduces microchipping and extends edge life
• 4 usable cutting edges per insert for lower per-edge tooling cost
• Compatible with clamp, pin, and lever-lock insert holding methods

Compatibility

Conforms to ANSI and ISO standards; ISO designation VNMG160404-MF4, industry standard number VNMG331-MF4. Compatible with toolholders designed for VNMG-style inserts using clamp, pin, or lever-lock holding methods. Verify toolholder bore diameter against the 0.150-inch insert hole diameter before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians following machine builder and toolholder manufacturer guidelines. Disengage machine power and confirm the spindle is fully stopped before indexing or replacing inserts. Use a torque wrench calibrated to the toolholder manufacturer's specification for the clamping screw — do not over-torque, as carbide inserts are brittle. Inspect the insert pocket seat and clamping components for debris or damage before seating a new insert.