Seco 02615984 Tnmg 438-MR4 TS2500 Carbide Turning Insert

Product Description

The SECO 02615984 is a solid carbide turning insert in the TNMG 438-MR4 series, designed for high-performance single-point turning operations on difficult-to-machine materials. It carries a multilayer TiAlN and TiN coating applied via PVD process, which promotes heat resistance and edge durability during interrupted or continuous cuts. The triangular insert geometry provides 6 usable cutting edges, maximizing tool economy. With a 0.5000-inch inscribed circle, a 0.1260-inch corner radius, and a 0.1874-inch insert thickness, this insert fits standard TNMG-style toolholders. The TS2500 grade is engineered primarily for superalloys and titanium, making it a practical choice for aerospace and high-temp alloy machining environments.

This insert is suited for use in CNC turning centers and manual lathes handling superalloys, titanium, steel, stainless steel, and cast iron. The MR4 chip breaker geometry is optimized for medium roughing conditions. Supported operations include turning, facing, boring, and back turning. The T-Land cutting edge style and negative rake angle contribute to edge strength during aggressive material removal. The insert is compatible with clamp, pin, and lever lock holding systems, giving it broad toolholder versatility across production turning setups in aerospace, industrial manufacturing, and precision machining shops.

Key Features

• TS2500 grade with multilayer TiAlN and TiN PVD coating for superalloy and titanium cutting
• 6 cutting edges on a 60-degree triangular insert body for extended tool life per insert
• MR4 chip breaker designed for medium roughing applications
• T-Land cutting edge style with negative rake for increased edge strength
• Compatible with clamp, pin, and lever lock toolholder systems
• Supports turning, facing, boring, and back turning operations

Compatibility

Designed for use in TNMG-style toolholders that accept a 0.5000-inch inscribed circle insert with a 0.2028-inch hole diameter. Compatible with clamp, pin, and lever lock holding methods. ISO code TNMG220432-MR4 and industry standard number TNMG438-MR4 apply. Conforms to ANSI and ISO insert standards.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and the turret is indexed away from the work zone before seating or replacing inserts. Use the correct clamp, pin, or lever lock hardware specified for the toolholder to achieve proper insert seating and prevent movement under cutting loads. Verify insert orientation and clearance angle before resuming operation.