Kennametal 1183203 TPG221 K313 Carbide Turning Insert

Product Description

The KENNAMETAL 1183203 is a solid carbide, uncoated triangular turning insert designed for precision metal removal on CNC and manual lathes. Carrying the ANSI designation TPG221 and ISO designation TPG110304, it belongs to the KENDEX series. The insert features a 60-degree included angle, a 1/4-inch inscribed circle, and a 1/64-inch corner radius. The K313 grade is an uncoated bright carbide formulated for high wear resistance across a range of workpiece materials including non-ferrous metals, stainless steel, cast iron, and superalloys. The flat-top chip breaker geometry and positive rake angle promote clean chip flow and reduced cutting forces. Licensed machinists and CNC operators install this insert in compatible clamp-style toolholders.

This insert is suited for turning, facing, and boring operations in both production and job-shop environments. Its positive side clearance and honed cutting edge make it well-matched for finishing and semi-finishing passes on aluminum, non-ferrous metals, stainless steel, cast iron, and titanium-based superalloys. The three available cutting edges extend tool life between holder changes. Maximum recommended depth of cut is 0.049 inches (1.25 mm), positioning this insert for light-to-moderate material removal rather than heavy roughing. It is appropriate for both residential-shop and industrial-floor CNC turning centers.

Key Features

• ANSI code TPG221, ISO code TPG110304 — KENDEX series for standardized toolholder compatibility
• K313 uncoated bright carbide grade with high wear resistance for stainless steel, cast iron, aluminum, and superalloys
• 60-degree triangular shape provides three usable cutting edges per insert
• Positive rake angle and flat-top chip breaker support clean chip evacuation on light-to-moderate cuts
• Honed cutting edge style for consistent edge integrity on finishing passes
• Maximum depth of cut 0.049 inches (1.25 mm) — optimized for finishing and semi-finishing

Compatibility

Designed for use in clamp-style toolholders that accept TPG221 triangular inserts per ANSI and ISO standards. Suitable for multi-use applications including turning, facing, and boring. Confirm toolholder pocket geometry and clamping method before installation.

Installation Notes

Installation is performed by machinists and CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque driver or clamp screw per the toolholder manufacturer specifications — do not overtighten the clamp, as this can chip the insert or damage the pocket seat. Inspect the toolholder pocket for debris or wear before seating a new insert.