Seco 02430120 Turning Insert Dcmt 21.51-F1 CP200 Carbide

Product Description

The SECO 02430120 is a solid carbide turning insert in the DCMT 21.51-F1 series, designed for precision metal cutting in CNC lathe and turning center applications. Coated with a multilayer PVD TiAlN and TiN finish, this insert carries the CP200 manufacturer grade and features an F1 chip breaker geometry with a sharp cutting edge style. It has a 55-degree diamond shape, a 0.25-inch inscribed circle, and a 1/64-inch (0.0157-inch) corner radius. Machinists and CNC operators install this insert when working stainless steel, superalloys, and titanium in finish to semi-finish passes.

This insert is suited for turning, facing, boring, and back turning operations on CNC lathes and multi-axis turning centers. Primary workpiece materials are stainless steel, superalloys, and titanium (ISO material codes M and S). Secondary applications include steel and cast iron (ISO codes P and K). The neutral hand orientation makes it compatible with standard DCMT-style toolholders. The screw-clamp holding method provides secure seating at elevated cutting speeds typical of ISO M and S material grades.

Key Features

• Solid carbide substrate with multilayer PVD TiAlN and TiN coating for heat and wear resistance in difficult-to-machine alloys
• 55-degree diamond insert shape (Shape Code D) with F1 chip breaker for controlled chip formation in finish and semi-finish cuts
• Sharp cutting edge style with positive rake geometry reduces cutting forces on thin-wall and heat-sensitive workpieces
• Two cutting edges per insert; neutral hand orientation fits standard DCMT screw-clamp toolholders
• Maximum depth of cut of 0.2913 inches supports a range of roughing-to-finish pass depths
• Conforms to ANSI and ISO standards; ISO code DCMT070204-F1, Industry Standard Number DCMT21.51-F1

Compatibility

Designed as a screw-clamp replacement insert for DCMT-style toolholders accepting a 55-degree diamond insert with a 0.25-inch inscribed circle and 3/32-inch thickness. Verify toolholder pocket specifications against ANSI and ISO DCMT070204 geometry before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Before indexing or replacing the insert, confirm the machine spindle is stopped and the turret is in a safe position. Use the appropriate torx or hex key to the toolholder manufacturer's specified seating torque for DCMT screw-clamp seats. Inspect the insert pocket and clamp screw for wear or debris before seating the new insert to ensure proper contact and repeatability.