Kennametal 5387663 Turning Insert CNMG432MW KCP25B

Product Description

The KENNAMETAL 5387663 is a CNMG432MW indexable turning insert in grade KCP25B, designed for general-purpose metal cutting on CNC lathes and turning centers. The insert features a multilayer CVD coating stack of TiCN, Al2O3, and TiOCN applied via MTCVD process, delivering a balance of wear resistance and toughness suited to steel and cast iron workpieces. The 80-degree diamond (rhombic) shape provides a strong cutting geometry with a negative rake and negative side clearance. With four usable cutting edges and a wiper edge geometry in the MW chip breaker, the 5387663 is built for medium-machining operations including turning, facing, and boring.

This insert is intended for use in steel (ISO P) and cast iron (ISO N) applications where moderate wear resistance and toughness are priorities. The MW chip breaker is optimized for medium depth-of-cut and feed-rate ranges, making it a practical choice for semi-finishing and moderate roughing passes on production turning equipment. It is seated using clamp-and-pin holding methods in compatible KENLOC toolholders. Machinists and CNC operators in production shops, job shops, and aerospace or general manufacturing environments will find this insert appropriate for high-volume turning of ferrous materials.

Key Features

• KCP25B grade with multilayer CVD coating (TiCN, Al2O3, TiOCN) for wear resistance and toughness on steel and cast iron
• MW wiper chip breaker geometry optimized for medium machining — turning, facing, and boring
• 80-degree diamond insert shape with negative rake and negative side clearance for rigid, stable cutting
• Four cutting edges per insert for extended tool life per unit
• Honed cutting edge style reduces chipping and improves edge consistency
• Compatible with clamp and pin holding methods in KENLOC toolholder series

Compatibility

Designed for use in KENLOC-series toolholders accepting CNMG432 (ISO CNMG120408) inserts with clamp and pin holding. Conforms to ANSI and ISO insert standards. Suitable for multi-use applications including turning, facing, and boring on steel and cast iron workpieces.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully into the pocket before tightening the clamp to ensure proper edge engagement and avoid insert rocking. Inspect the pocket and locating pin for wear or debris before each insert change to maintain positioning accuracy.