Seco 02615981 Tnmg 432-MR4 TS2500 Turning Insert

Product Description

The SECO 02615981 is a TNMG 432-MR4 indexable turning insert manufactured from solid carbide with a multilayer PVD TiAlN and TiN coating in the TS2500 grade. The triangular insert geometry features a 60-degree included angle, a 0.5-inch inscribed circle, a 0.0315-inch corner radius, and a negative rake with T-Land cutting edge style. Six usable cutting edges are available per insert. The MR4 chip breaker geometry supports controlled chip formation across a range of depths of cut up to 0.7874 inches. Licensed machinists and CNC operators install this insert in compatible turning tool holders for production and job-shop metalcutting applications.

This insert is engineered primarily for machining superalloys and titanium (ISO material group S), with secondary suitability for steel, stainless steel, and cast iron (ISO groups P, M, and K). Typical applications include external turning, facing, boring, and back turning operations on CNC lathes and turning centers. The neutral hand orientation makes it suitable for both left- and right-hand tool holder setups. The insert is held by clamp, pin, or lever-lock style holders compatible with the TNMG insert seat standard.

Key Features

• TS2500 carbide grade with multilayer PVD TiAlN and TiN coating for heat and wear resistance in difficult-to-machine materials
• MR4 chip breaker designed for controlled chip formation in superalloy and titanium cutting
• Six cutting edges per insert maximize tool utilization and reduce per-edge cost
• T-Land cutting edge style provides edge reinforcement for interrupted and demanding cuts
• Neutral hand orientation compatible with left- and right-hand TNMG tool holders
• Compliant with ANSI and ISO insert standards; ISO code TNMG220408-MR4

Compatibility

Designed for use in TNMG-style insert seats accepting clamp, pin, or lever-lock holding methods. Compatible with tool holders conforming to ANSI and ISO TNMG 432 seating standards. Industry standard number TNMG432-MR4.

Installation Notes

Insert indexing and replacement should be performed by a qualified machinist or CNC operator with the machine fully stopped and the spindle locked out per facility lockout/tagout procedures. Inspect the insert pocket seat and shim for wear or debris before seating the new insert. Torque the clamping screw or lever to the tool holder specification provided by the holder manufacturer. Verify depth-of-cut and feed parameters against the TS2500 grade cutting data recommendations before resuming production.