Kennametal 1159665 Turning Insert DNMG431K KC730 Tin

Product Description

The KENNAMETAL 1159665 is a solid carbide turning insert in the DNMG431K geometry, coated with TiN via a PVD process and belonging to the KENLOC series. This insert features a 55-degree diamond (rhombic) shape, negative rake, and negative side clearance, making it well suited for high-wear-resistance applications across a broad range of workpiece materials. The inscribed circle measures 0.5 inches, insert length is 0.6102 inches (15.5 mm), and the corner radius is 0.0156 inches (1/64 inch). The KC730 grade is engineered to deliver high to moderate wear resistance and toughness. Licensed machinists and CNC turning specialists install this insert on compatible KENLOC-style toolholders for precision turning operations.

This insert is designed for turning steel (P-class), stainless steel (M-class), and cast iron (K-class) workpieces, with secondary suitability for superalloys (S-class) and additional M-class applications. The DNMG geometry with a K chip breaker makes it appropriate for finishing to moderate roughing passes on CNC lathes and turning centers. The maximum depth of cut is 1.25 mm (0.0492 inches). It is sold in a minimum order quantity of 5, with a package quantity of 1 per unit.

Key Features

• KC730 PVD TiN coating provides high wear resistance with retained toughness across steel, stainless, and cast iron applications
• 55-degree diamond (D) insert shape with DNMG431 ANSI geometry and ISO equivalent DNMG150404
• Negative rake and negative side clearance (clearance code N, tolerance code M) for stable, predictable cutting
• K chip breaker geometry controls chip flow during finish and moderate roughing passes
• KENLOC series clamping system supports both clamp and pin insert holding methods
• Solid carbide substrate rated to material grades C2, C3, and C4

Compatibility

Designed for use with KENLOC-series toolholders accepting DNMG-style inserts with clamp or pin holding. Compatible workpiece material codes include P (steel), M (stainless steel), K (cast iron), and S (superalloys) as a secondary classification. ANSI size code 431; ISO size code 150404. Industry standard number VNMP331.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the turret is indexed to a safe position before changing inserts. Seat the insert firmly against the pocket locating surfaces and engage the clamp or pin per the toolholder manufacturer torque guidance. Inspect the insert seat and chip breaker groove for debris before seating a new insert to avoid edge chipping on first contact.