Seco 74005308 Cutoff Insert T25M Carbide 0.161 in

Product Description

The SECO 74005308 is a carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. Built to Series 150.10 geometry, it features a 0.161-inch cutting width and a neutral lead angle, making it suitable for straight plunge cuts without lateral force bias. The insert uses a clamp-style holding method and is manufactured from carbide grade C5 with a CVD-applied TiC/TiCN/TiN multilayer coating. This coating sequence improves wear resistance and thermal stability during continuous or interrupted cut-off work. Machinists and CNC operators in production and job-shop environments install this insert into compatible SECO toolholders rated for the 150.10 series.

This insert is intended for cut-off applications across a universal range of workpiece materials, designated by material code O. The 150.10 series is a single-end design, meaning the insert is indexed or replaced rather than flipped. The chipbreaker designation is 12, which supports chip control during parting operations on a wide variety of bar stock diameters. It is appropriate for both light production runs and high-volume turning environments where consistent parting depth and surface finish at the cutoff face are required.

Key Features

• Carbide substrate with CVD TiC/TiCN/TiN multilayer coating for extended tool life
• 0.161-inch cutting width with a width tolerance of 0.003 inches
• Neutral lead angle and neutral insert hand for straight plunge cut-off cuts
• Clamp-style insert holding method for rigid, repeatable seating in compatible toolholders
• Chipbreaker designation 12 for reliable chip control across universal workpiece materials
• Single-end insert design; replace rather than index for consistent cutting geometry

Compatibility

Designed for use with SECO Series 150.10 cut-off toolholders that accept a size code 4 insert with clamp-style holding. Refer to the SECO Series 150.10 toolholder documentation to confirm correct holder pairing before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before changing inserts. Seat the insert fully into the pocket and verify the clamp is torqued according to the toolholder manufacturer specifications before resuming operation. Inspect the insert seat and clamp for wear or debris that could affect seating accuracy, as improper seating on a cutoff insert can cause deflection or insert breakage.