Kennametal 1943835 Ceramic Turning Insert CNGA432T0420

Product Description

The KENNAMETAL 1943835 is an uncoated ceramic turning insert in the KENLOC series, designed for high-speed hard-part machining and finishing operations. It carries the industry standard designation CNGA432T0420 and the manufacturer grade KY1540, a high wear-resistance ceramic formulated for superalloys and titanium workpiece materials. The insert features an 80-degree diamond (rhombic) shape, a T-Land cutting edge style, and a flat-top chip breaker. With a 0.5-inch inscribed circle, a 3/16-inch thickness, and a 1/32-inch corner radius, this insert is built for stable, precise cuts in demanding materials where carbide grades reach their performance limits.

This insert is suited for turning, facing, and boring operations on hardened materials, superalloys, and titanium components in precision machining environments. The neutral hand orientation makes it adaptable across a range of tool holders that accept CNGA-style inserts. The negative rake and negative side clearance geometry provide edge strength critical when cutting hard or abrasive workpiece materials. Maximum depth of cut is 0.0492 inches (1.25 mm), reflecting its application as a finishing or light semi-finishing insert rather than a heavy roughing tool. Machinists and tool-room professionals working with aerospace-grade alloys or hardened steel components will find this insert appropriate for that class of work.

Key Features

• Grade KY1540 uncoated ceramic optimized for high wear-resistance in superalloy and titanium applications
• 80-degree diamond (CNGA) insert shape with T-Land cutting edge for controlled edge strength
• Flat-top chip breaker geometry with negative rake and 0-degree relief angle
• Four cutting edges per insert for extended tool life across multiple setups
• Neutral hand orientation compatible with CNGA-style clamp and pin holding systems
• Maximum depth of cut 0.0492 inches (1.25 mm) suited to finishing and light semi-finishing passes

Compatibility

Designed for use in tool holders accepting CNGA432 inserts with clamp and pin holding methods per ANSI and ISO standards (ANSI Insert Code: CNGA432; ISO Insert Code: CNGA120408). Verify holder geometry and seating configuration before installation.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and the tool holder is secured before seating or replacing the insert. Use the appropriate torque wrench on the clamping screw per the tool holder manufacturer specification — do not overtighten. Inspect the insert pocket and seating surfaces for chips or debris before installation, as contamination can cause premature edge failure or insert fracture during a cut.