Kennametal 3751956 DNMG432FN KCK05 Turning Insert

Product Description

The KENNAMETAL 3751956 is a DNMG432FN solid carbide turning insert in the KENLOC series, coated with a multilayer TiCN and Al2O3 CVD coating under the manufacturer grade KCK05. Measuring 15.5 mm (0.611 inches) in length with a 0.5-inch inscribed circle and a 1/32-inch (0.0313-inch) corner radius, this insert is engineered for general turning operations on steel and cast iron. It features a negative rake geometry, a honed cutting edge, and a neutral hand orientation. The FN chip breaker designation supports controlled chip evacuation across a range of feeds and depths. This insert is installed by machinists and CNC turning technicians on lathes and turning centers.

This insert is suited for steel and cast iron workpiece materials in roughing and finishing turning applications. Its four cutting edges and dual-method holding compatibility - clamp and pin - make it adaptable to multiple DNMG-style toolholders. Typical applications include turning, facing, boring, back turning, and back boring on both CNC and manual lathes in production and job-shop environments. The KCK05 grade and MTCVD coating process provide wear resistance suitable for interrupted and continuous cuts on ferrous materials including cast iron.

Key Features

• Multilayer TiCN and Al2O3 MTCVD coating (KCK05 grade) for wear resistance on steel and cast iron
• DNMG 55-degree diamond insert shape with negative rake angle for rigid, stable cutting
• FN chip breaker geometry for controlled chip formation across turning, facing, and boring operations
• Four usable cutting edges per insert for extended tool life per unit
• Honed cutting edge style reduces micro-chipping during entry and exit
• Compatible with clamp and pin holding methods for broad toolholder versatility

Compatibility

Designed for use in DNMG-style toolholders that accept a 432 insert size. Primary workpiece materials are steel (P) and cast iron (K), with secondary compatibility in non-ferrous materials (N). Meets ANSI and ISO insert geometry standards for DNMG432 inserts.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or replacing inserts. Ensure the toolholder pocket is clean and free of chips before installing the insert. Use the appropriate torque wrench for the clamp screw to avoid insert movement or fracture - refer to the toolholder manufacturer's seating specifications.