Kennametal 1159615 DNMG431P KC730 Carbide Turning Insert

Product Description

The KENNAMETAL 1159615 is a solid carbide turning insert in the DNMG431P geometry, coated with TiN via a PVD process and assigned the KC730 manufacturer grade. It carries a 55-degree diamond (rhombic) shape with a negative rake angle of 10 degrees, a neutral hand orientation, and a honed cutting edge style. The insert delivers high wear-resistance to moderate wear-resistance and toughness across steel, stainless steel, and cast iron workpiece categories. With four usable cutting edges and a chip breaker optimized for medium machining operations, it is suited for high-volume turning applications where consistent tool life matters. Licensed machinists and CNC operators working in job shop or production environments are the primary installers.

This insert is designed for medium machining chip breaker conditions and is rated for turning, facing, boring, back turning, and back boring operations. It targets primary workpiece materials including steel, stainless steel, superalloys, and titanium, with secondary suitability for additional stainless and superalloy grades. The KENLOC series designation indicates compatibility with Kennametal KENLOC-style toolholders that accept DNMG-geometry inserts. The insert conforms to both ANSI (DNMG431) and ISO (DNMG150404) standards, making it interchangeable in holders designed around either specification.

Key Features

• KC730 grade with TiN PVD coating for high wear-resistance across steel, stainless steel, and cast iron
• 55-degree diamond insert shape (DNMG) with negative side clearance and negative rake for stable interrupted and continuous cuts
• Four cutting edges per insert for extended usable tool life per unit
• Medium machining chip breaker geometry supports a maximum depth of cut of 0.0492 inches (1.25 mm)
• Honed cutting edge style reduces microchipping on difficult-to-machine alloys and superalloys
• Clamp and pin insert holding method for secure seating in compatible KENLOC toolholders

Compatibility

Designed for use in KENLOC-series toolholders accepting DNMG-geometry inserts per ANSI code DNMG431 and ISO code DNMG150404. Verify toolholder pocket geometry and clamping style before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC technician with the machine fully powered down and in an e-stop or lockout-tagout state before insert changes. Use the appropriate torque wrench for the clamping screw — refer to the toolholder manufacturer's documentation for the correct fastener specification. Inspect the toolholder pocket for wear, debris, or damage before seating the new insert. Never mix inserts of different geometries or grades in the same pocket without confirming dimensional compatibility.