Walter 8115895 Turning Insert WNMG431-MP5 WPP20G Carbide

Product Description

The WALTER 8115895 is a solid carbide turning insert in the WNMG-MP5 series, designed for steel and cast iron machining operations. It carries a CVD multilayer coating of TiCN, Al2O3, and TiN under the manufacturer grade WPP20G, delivering wear resistance and thermal stability in demanding cutting environments. The insert features an 80-degree trigon shape, a neutral hand orientation, and an inscribed circle of 0.5 inches. With a maximum depth of cut of 0.342 inches and a corner radius of 0.016 inches, it is suited for roughing and medium machining passes. Licensed machinists and CNC turning specialists are the primary installers of this insert.

This insert is rated for turning, facing, and boring applications. Its MP5 chip breaker geometry handles both roughing and medium machining operations on steel (ISO material code P) and cast iron (ISO material code K), corresponding to material grades P20 and K30. The chamfered and honed cutting edge style improves edge stability during interrupted or continuous cuts. With six cutting edges available per insert and compatibility with both clamp and pin holding methods, it offers cost-effective utilization across high-volume production and job-shop environments.

Key Features

• CVD multilayer coating: TiCN, Al2O3, TiN - manufacturer grade WPP20G for extended tool life on steel and cast iron
• MP5 chip breaker geometry optimized for roughing and medium machining operations
• Six cutting edges per insert for maximized cost-per-edge value
• Neutral hand orientation compatible with clamp and pin holding methods
• Chamfered and honed cutting edge style for improved edge stability and reduced chipping
• Conforms to both ANSI (WNMG431) and ISO (WNMG080404) standards

Compatibility

Designed for use in WNMG-style turning toolholders that accept clamp or pin holding methods. Primary workpiece materials are steel (ISO code P) and cast iron (ISO code K). Suitable for turning, facing, and boring operations on CNC lathes and manual turning centers.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or indexing the insert. Ensure the toolholder pocket and clamping surfaces are clean and free of chips before installing the insert to maintain correct seating. Follow the toolholder manufacturer guidelines for clamp torque and verify insert security before resuming cutting operations.