Seco 74016521 Carbide Cutoff Insert T25M 0.161in Series 150.10

Product Description

The SECO 74016521 is a solid carbide cutoff and parting insert designed for precision grooving and parting operations on a wide range of workpiece materials. This single-end insert features a 0.161 inch cutting width and a 0.009 inch corner radius, with a right-hand lead angle of 6 degrees. The T25M manufacturer grade carbide substrate is finished with a CVD-applied TiC/TiCN/TiN multilayer coating, providing thermal resistance and edge durability during interrupted or continuous parting cuts. Chipbreaker designation is 16. The overall insert length is 0.354 inches. It is held in the toolholder via a clamp-style insert holding method.

This insert is suited for OD parting and cutoff applications across a broad range of metalworking operations, classified for universal primary workpiece material compatibility with a material grade of C5. It is intended for use in Series 150.10 compatible toolholders. Typical installation scenarios include CNC lathe and turning center parting operations in production and job-shop environments. Machinists and toolroom technicians working with steel, stainless, cast iron, and similar materials will find this insert appropriate for general parting work. Minimum order quantity is 10 pieces; individual package quantity is 1.

Key Features

• Solid carbide substrate with T25M grade for high wear resistance in parting applications
• CVD multilayer coating: TiC/TiCN/TiN for improved thermal and abrasion performance
• 0.161 inch cutting width for precise parting and cutoff geometry
• 0.009 inch corner radius for controlled edge engagement
• 6-degree right-hand lead angle for directional chip flow management
• Clamp-style insert retention for secure seating in compatible toolholders

Compatibility

Designed for use with Series 150.10 clamp-style cutoff and parting toolholders accepting a size 4 insert.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine fully powered down and the spindle locked before seating the insert. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer to secure the insert without over-clamping. Inspect the insert pocket for chips or debris before installation, as contamination can cause premature insert failure or poor surface finish. Follow the toolholder manufacturer guidelines for feed rate and depth-of-cut limits appropriate to this insert geometry.