Kennametal 1310838 CPGT21505LF KC5010 Carbide Turning Insert

Product Description

The KENNAMETAL 1310838 is a solid carbide turning insert with ANSI designation CPGT21505LF and ISO designation CPGT060202, finished with a PVD-applied TiAlN coating under the KC5010 grade. The insert features an 80-degree diamond (rhombic) shape, a neutral hand orientation, and a positive rake and side clearance geometry suited for finishing and light machining operations. The inscribed circle measures 0.2500 inches, the insert length is 0.2539 inches (6.45 mm), and the corner radius is 0.0079 inches. It mounts via a screw-on holding method. Licensed machinists and CNC turning specialists install this insert in indexable toolholders for turning, facing, and boring operations.

This insert is engineered for finishing and light machining on steel, stainless steel, superalloys, titanium, and cast iron. Its KC5010 grade delivers high wear resistance to moderate wear resistance across ISO material groups P, M, K, N, and S, with secondary applicability in groups N, P, and S. The two available cutting edges and positive geometry support precise surface finish work at controlled depths of cut up to 0.0492 inches (1.25 mm). The LF chip breaker designation targets controlled chip formation in light-pass finishing scenarios. This insert suits CNC lathes and manual turning centers in production and job-shop environments.

Key Features

• KC5010 grade with PVD TiAlN coating for high wear resistance on steel, stainless steel, and superalloys
• 80-degree diamond (rhombic) insert shape with positive rake angle of 5 degrees and positive side clearance
• LF chip breaker optimized for finishing and light machining operations
• Maximum depth of cut of 0.0492 inches (1.25 mm) supports precision finishing passes
• Two cutting edges per insert; screw-on mounting for secure, repeatable indexing
• Honed cutting edge style reduces microchipping at light chip loads
• Compliant with ANSI and ISO standards; multi-use for turning, facing, and boring

Compatibility

Designed as an OEM-style screw-on indexable turning insert conforming to ANSI size code 21505 and ISO size code 060202, compatible with standard CPGT-style screw-on toolholders accepting a 0.2500-inch inscribed circle insert with a 0.1142-inch hole diameter.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before indexing or replacing inserts. Use the correct torque screwdriver specified by the toolholder manufacturer for the mounting screw — do not overtighten, as this can fracture the insert or damage the pocket seat. Inspect the toolholder pocket for debris, wear, or deformation before seating the new insert to ensure proper contact and cutting edge geometry.