Kennametal 4034788 Grooving Insert G0505GMN KCU10 Carbide

Product Description

The KENNAMETAL 4034788 is a solid carbide grooving insert designed for precision external and internal grooving operations on CNC lathes and turning centers. Manufactured to the G0505GMN geometry in the KCU10 grade, this insert features a Physical Vapor Deposition (PVD) AlTiN coating that provides thermal resistance and wear protection at elevated cutting speeds. The 5.05 mm cutting width and a maximum depth of cut of 4.19 mm make it well suited for medium-depth groove profiles. The neutral hand orientation allows for straightforward straight-plunge grooving. It is installed by machinists and CNC turning specialists in production and job-shop environments.

This insert is used in external grooving, parting, and face grooving applications on a range of workpiece materials including steel, cast iron, and high-temperature alloys. The GMN chip breaker geometry promotes reliable chip control and evacuation, which is critical in grooving operations where chip packing can damage the workpiece or the insert seat. The Series A4 designation places it in a standardized toolholder family. It is suited to both production turning and precision finishing passes where consistent groove width is required.

Key Features

• KCU10 solid carbide grade with PVD AlTiN coating for extended tool life in steel and cast iron
• 5.05 mm cutting width with a maximum depth of cut of 4.19 mm
• GMN chip breaker geometry for controlled chip formation and evacuation in grooving operations
• Neutral hand insert orientation for straight-plunge grooving setups
• 0.79 mm corner radius for groove profile accuracy and edge strength
• Multi-use insert compatible with Series A4 toolholders

Compatibility

Designed for use with Series A4 grooving toolholders. Catalog reference number A4G0505M05U08GMN. Verify toolholder pocket specifications before installation to confirm correct seating and clamping.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the turret is locked before seating or replacing the insert. Use the manufacturer-specified torque tool for the clamping screw to avoid cracking the carbide substrate. Inspect the toolholder pocket for wear, chips, or debris before seating the new insert, as a contaminated pocket will affect insert performance and positioning accuracy.