Seco 00072250 Turning Insert DNMG432MR3 CP200 Carbide

Product Description

The SECO 00072250 is a solid carbide turning insert designed for precision metal removal in demanding machining environments. Conforming to ANSI insert code DNMG432 and ISO code DNMG150408, this insert features a 55-degree diamond (rhombic) shape with a neutral hand orientation and a negative rake geometry. It is PVD-coated with a multilayer TiAlN and TiN coating under the CP200 grade designation, delivering high wear resistance when cutting stainless steel, steel, superalloys, and titanium. The MR3 chip breaker geometry supports roughing and medium machining operations. With four cutting edges and a 0.5-inch inscribed circle, this insert offers extended tool life and reliable performance in production turning setups.

This insert is suited for CNC lathe and turning center applications in both job shop and production environments. Primary workpiece materials include stainless steel, superalloys, and titanium (ISO material codes M and S), with secondary suitability for steel and cast iron (ISO codes P and K). Typical operations include back turning, boring, facing, and general OD turning. The insert is held via clamp, pin, or lever lock toolholders compatible with the DNMG pocket configuration. It is appropriate for use by machinists and CNC operators working within industries such as aerospace, medical, and general metalworking where high wear resistance and controlled chip evacuation are critical.

Key Features

• CP200 grade with PVD multilayer TiAlN and TiN coating for high wear resistance on stainless steel and superalloys
• MR3 chip breaker geometry rated for roughing and medium machining operations
• 55-degree diamond insert shape provides a strong cutting edge with versatile entry angle options
• Four usable cutting edges maximize insert utilization and reduce cost per edge
• Chamfered and honed cutting edge style balances edge strength and surface finish quality
• Compatible with clamp, pin, and lever lock toolholder systems for flexible setup options

Compatibility

Designed for DNMG-style toolholders accepting a 432 (ANSI) or 150408 (ISO) pocket size with a negative side clearance (N) and tolerance code M. Compatible with clamp, pin, and lever lock holding methods per ANSI and ISO standards.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine in a fully stopped and locked-out state before changing inserts. Ensure the toolholder pocket and seating surfaces are clean and free of chips or debris before seating the insert. Torque the clamping screw or lever lock to the toolholder manufacturer's specification. Verify insert orientation and chip breaker direction before resuming cutting operations.