Kennametal 1161997 SCMT432LF KC730 Carbide Turning Insert

Product Description

The KENNAMETAL 1161997 is a solid carbide turning insert designated SCMT432LF in the KC730 grade, PVD TiN coated for extended tool life in demanding cutting applications. This screw-on style insert features a 90-degree square shape with a positive rake angle of 5 degrees, a 7-degree relief angle, and a honed cutting edge. It provides a 0.5-inch inscribed circle, a 0.03125-inch corner radius, and a 0.1875-inch insert thickness. With four usable cutting edges and an LF chip breaker geometry optimized for finishing and light machining, it is suited for lathe and boring applications requiring tight surface finish control. Licensed machinists and CNC operators install this insert in compatible screw-on toolholders.

This insert is designed for turning, facing, and boring operations on steel, stainless steel, and cast iron workpieces. The KC730 grade delivers high wear resistance to moderate wear resistance and toughness across steel (P), stainless steel (M), and cast iron (K) material groups, and it also performs on superalloys and titanium (secondary application). The LF chip breaker geometry targets finishing cuts with a maximum depth of cut of 0.0492 inches (1.25 mm), making it appropriate for precision passes where surface quality and dimensional accuracy are critical.

Key Features

• SCMT432LF geometry with LF chip breaker optimized for finishing and light machining
• KC730 grade with PVD TiN coating for high wear resistance on steel, stainless steel, and cast iron
• Four cutting edges per insert to maximize cost-per-edge value
• Positive rake angle (5 degrees) and positive side clearance for reduced cutting forces
• Screw-on holding method for secure, repeatable insert seating
• Compatible with multi-use applications: turning, facing, and boring

Compatibility

Designed for use in screw-on toolholders accepting SCMT432 (ANSI) or SCMT120408 (ISO) inserts with a 0.2165-inch (5.50 mm) hole diameter. Suitable for machining steel, stainless steel, cast iron, superalloys, and titanium workpieces.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the toolholder pocket and tighten the clamping screw to the toolholder manufacturer's specified torque. Inspect the cutting edge and chip breaker groove for damage before each use; a chipped or worn edge will compromise surface finish and dimensional tolerance.