Kennametal 1181994 Ceramic Turning Insert CNGA643

Product Description

The KENNAMETAL 1181994 is a ceramic, uncoated turning insert in the KENLOC series, manufactured to ANSI code CNGA643 and ISO code CNGA190612. It is made from silicon nitride ceramic in grade KY3500, designed for high wear-resistance to moderate wear-resistance and toughness applications on cast iron workpieces. The insert features an 80-degree diamond (rhombic) shape, a flat top chip breaker, a T-Land cutting edge style, and a negative rake with 0-degree relief angle. With a 3/4-inch inscribed circle and a 3/64-inch corner radius, this insert suits precision turning, facing, and boring operations. It is installed and used by machinists and CNC operators in production turning environments.

This insert is intended for use on cast iron materials where high wear-resistance is the primary requirement. Its silicon nitride ceramic composition and KY3500 grade make it well-suited for interrupted and continuous cuts in gray cast iron and similar ferrous materials. The flat top geometry and T-Land edge support stable cutting across turning, facing, and boring applications. It mounts using a clamp and pin holding method, compatible with KENLOC-series toolholders.

Key Features

• Silicon nitride ceramic construction in KY3500 grade for high wear-resistance on cast iron
• 80-degree diamond insert shape (CNGA) with T-Land cutting edge style
• Flat top chip breaker geometry for stable chip control
• 4 cutting edges with neutral hand orientation
• Uncoated bright finish - no coating delamination risk in high-temperature cuts
• Multi-use application: turning, facing, and boring

Compatibility

Designed as an OEM-style replacement for KENLOC-series toolholders accepting CNGA-style inserts with a clamp and pin holding method. Industry standard number CNGA643T0820 applies per ANSI and ISO standards.

Installation Notes

Installation is performed by machinists using standard KENLOC-compatible toolholders; verify the clamp and pin seating are secure before operation. Power down and lock out the spindle before indexing or replacing the insert. Inspect the insert pocket for chips or debris that could affect seating and cause premature edge failure. Follow the machine tool manufacturer and toolholder manufacturer specifications for clamp torque.