Kennametal 7090574 DNGG332 Carbide Turning Insert

Product Description

The KENNAMETAL 7090574 is a DNGG-style carbide turning insert designed for precision finishing operations on CNC and manual lathes. Carrying ANSI code DNGG332 and ISO code DNGG110408, this insert features a 55-degree diamond (rhombic) shape with a neutral hand orientation and a 0.80 mm (1/32 inch) corner radius. The AlTiN coating and KCU10B grade deliver high wear resistance across a range of workpiece materials. With four usable cutting edges, this insert offers consistent tool life and repeatable surface finish performance in production turning environments.

This insert is suited for finishing passes on steel, stainless steel, cast iron, aluminum, and non-ferrous materials. The FS chip breaker geometry is optimized for light depths of cut and tight tolerances, making it appropriate for applications where surface finish and dimensional accuracy are critical. It is installed in DNGG-compatible toolholders with negative side clearance. Machinists and CNC operators in job shops, aerospace, and general manufacturing will find this insert well-matched to high-volume finishing programs.

Key Features

• ANSI code DNGG332 and ISO code DNGG110408 for direct toolholder compatibility lookup
• KCU10B grade with AlTiN coating for high wear resistance on steel, stainless steel, and cast iron
• 55-degree diamond insert shape with 0.80 mm corner radius for finishing geometry
• Four cutting edges per insert for extended total tool life
• FS chip breaker optimized for finishing operations at light depths of cut
• Neutral hand orientation fits standard DNGG negative-rake toolholders

Compatibility

Designed for use in DNGG-style toolholders requiring a negative side clearance insert with ANSI size code 332. Compatible workpiece material codes include P (steel), M (stainless steel), K (cast iron), N (aluminum and non-ferrous), and S (superalloys) per ISO material classification.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. Always index or replace inserts with the machine powered off and the spindle fully stopped. Seat the insert firmly against the toolholder pocket and tighten the clamping screw to the toolholder manufacturer's specified torque. Inspect the pocket for chips or debris before seating a new cutting edge to prevent insert rocking and premature edge failure.