Kennametal 5699571 CNMG432MR KCM25B Turning Insert Carbide

Product Description

The KENNAMETAL 5699571 is a CNMG432MR indexable turning insert in grade KCM25B, designed for external and internal turning operations on steel, stainless steel, and superalloys including titanium. The insert features a multilayer CVD coating sequence of TiCN, Al2O3, and TiOCN applied via MTCVD process, delivering a combination of high toughness on steel and moderate wear resistance on stainless steel. It carries an 80-degree diamond (rhombic) shape with a neutral hand orientation, a 0.0313 inch corner radius, and a honed cutting edge style. Four usable cutting edges are available per insert, making it an efficient choice for roughing and medium machining applications.

This insert is suited for turning, facing, and boring operations in both production and job-shop environments. The MR chip breaker geometry is optimized for roughing and medium machining passes on steel and stainless steel workpieces, and it also accommodates superalloys and titanium. It fits KENLOC-style toolholders that accept CNMG432 inserts using clamp or pin holding methods. It is appropriate for use by machinists and CNC turning specialists in general metalworking and precision manufacturing settings.

Key Features

• Multilayer CVD coating: TiCN, Al2O3, and TiOCN for toughness and wear resistance
• 80-degree diamond insert shape with negative rake and negative side clearance
• MR chip breaker geometry for roughing and medium machining
• Four cutting edges per insert for extended tool life value
• Honed cutting edge style reduces microchipping on interrupted cuts
• Compatible with clamp and pin insert holding methods

Compatibility

Designed for use in KENLOC-series CNMG432 toolholders accepting clamp or pin clamping. Conforms to ANSI insert code CNMG432 and ISO insert code CNMG120408, allowing fitment in any toolholder specifying either standard. Multi-use application includes turning, facing, and boring operations.

Installation Notes

Installation is performed by a qualified machinist or CNC technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque wrench and seating tool recommended by the toolholder manufacturer to secure the clamp or pin without overtightening. Inspect the insert pocket and seating surface for chips or debris before seating a new insert to ensure proper contact and runout.