Seco 74018893 Milling Insert T25M Solid Carbide Ticn

Product Description

The SECO 74018893 is a solid carbide milling insert in the 335.19-12 series, designed for use in SECO 335.19 cutter bodies. It carries the ANSI and ISO designation 335.19-1204T-MD09 and is finished with a CVD-applied TiCN coating over a medium-grain carbide substrate in the T25M grade. The insert measures 0.5 inches square with a thickness of 0.1575 inches and provides four cutting edges. A negative rake angle of 15 degrees combined with a T-Land cutting edge style supports stable, predictable performance in demanding milling applications. The screw-hold mounting method and neutral hand orientation suit standard toolholder setups without indexing restrictions.

This insert is suited for milling steel, stainless steel, superalloys, and titanium, corresponding to ISO material codes P, M, and S. It is a single-sided insert intended for face milling and shoulder milling operations where controlled chip formation is required. The MD09 chip breaker geometry is optimized for medium-grain cutting conditions across these material groups. Licensed machinists and CNC operators working in job shop, aerospace, and general manufacturing environments will encounter this insert in production-run and prototype milling operations alike.

Key Features

• CVD-applied TiCN coating on a medium-grain solid carbide substrate for wear resistance in steel and stainless applications
• T25M manufacturer grade rated for steel, stainless steel, superalloys, and titanium (ISO P, M, S)
• Four cutting edges on a neutral-hand, single-sided square insert body
• MD09 chip breaker geometry engineered for controlled chip formation in medium-condition cuts
• Negative rake angle with T-Land cutting edge style supports stable tool life at higher feeds
• Screw-hold mounting method compatible with standard 335.19-series cutter bodies

Compatibility

Designed for use with SECO 335.19-series cutter bodies. Insert series designation is 335.19-12. ANSI and ISO code 335.19-1204T-MD09 applies. Verify cutter body pocket specification before ordering.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. Always power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully into the pocket before tightening the clamping screw, and use the torque value specified by the cutter body manufacturer. Inspect the pocket seating surface for chips or debris that could prevent proper insert contact and cause runout.