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The SECO 02960821 is a solid carbide turning insert in the DCMX-F1 series, carrying industry standard designation DCMX32.51W-F1 and ISO code DCMX11T304W-F1. It features a 55-degree diamond shape with a neutral hand orientation and a 7-degree relief angle. The insert is CVD-coated with a TiCN, Al2O3, and Cr multilayer Duratomic coating in manufacturer grade TP1501, optimized for cutting hardness and thermal resistance. With two cutting edges and a sharp cutting edge style, this multi-tipped insert is suited for high-productivity turning operations where consistent tool life is required.
This insert is designed for CNC lathe and turning center applications in metalworking environments. Its primary workpiece material is steel (ISO P code), with secondary suitability for cast iron and hard materials (ISO K and H codes). Supported operations include turning, facing, boring, and back turning, making it a versatile choice for production machinists and toolroom applications in both general and precision manufacturing settings. The F1 chip breaker geometry promotes positive rake cutting action and efficient chip evacuation at a range of depths.
Designed for use in toolholders accepting DCMX-series inserts with a 3/8-inch inscribed circle, screw-clamp holding method, and clearance code C, tolerance code M. Compatible toolholder geometry should match a 55-degree diamond insert seat. Verify toolholder specifications against the DCMX11T304W-F1 ISO designation and DCMX32.51W-F1 ANSI industry standard number before ordering.
Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torx or hex key to seat the clamping screw to the toolholder manufacturer's specification. Inspect the insert pocket for chips or wear before seating a new insert, and confirm the cutting edge is fully engaged and the insert is flush before resuming operation.
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