Kennametal 1160840 CNGG430LF KC730 Turning Insert

Product Description

The KENNAMETAL 1160840 is a solid carbide turning insert in the KENLOC series, designated CNGG430LF with grade KC730. It features an 80-degree diamond (rhombic) shape, a TiN PVD coating, and a neutral hand orientation. The insert is designed for finishing and light machining operations. The LF chip breaker geometry, combined with a honed cutting edge and a 10-degree rake angle, supports consistent chip control and surface finish in steel, stainless steel, and cast iron applications. With a 0.5-inch inscribed circle and a corner radius of 0.0039 inches, this insert delivers precision suited to close-tolerance turning work performed by machinists and CNC operators.

This insert is suited for use on CNC lathes and turning centers in operations including turning, facing, and boring. It is intended for primary workpiece materials including steel, stainless steel, superalloys, and titanium. The KC730 grade provides high to moderate wear resistance and toughness across steel (P), stainless steel (M), and cast iron (K) material categories. The negative rake geometry and CNGG form factor accommodate tool holders using clamp and pin holding methods. This insert fits residential production, job shop, and industrial machining environments wherever fine surface finishes and accurate tolerances are required.

Key Features

• KC730 grade with TiN PVD coating for wear resistance across steel, stainless steel, and cast iron
• LF chip breaker geometry optimized for finishing and light machining cuts
• 80-degree diamond insert shape with honed cutting edge for accurate, clean cuts
• Neutral hand orientation suitable for both left- and right-hand tool holder configurations
• 4 usable cutting edges per insert, maximizing tool life per unit
• Negative rake and negative side clearance (N clearance code) for rigid, stable cutting performance

Compatibility

Designed for use with KENLOC-style tool holders that accept CNGG-form inserts using clamp and pin holding methods. Conforms to ANSI insert code CNGG4302 and ISO insert code CNGG120401. Compatible with holders specifying ANSI size code 4302 or ISO size code 120401.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician with the machine fully powered down and the spindle locked before changing inserts. Use the appropriate torque wrench or clamp screw driver specified by the tool holder manufacturer when seating the clamp — do not overtighten by estimate. Inspect the pocket and locating pin for wear or debris before seating the insert. Verify insert orientation and hand before resuming cuts.