Walter 6944757 WNMG080408-RM5 WSM20S Turning Insert

Product Description

The WALTER 6944757 is a solid carbide turning insert in the WNMG080408-RM5 WSM20S designation, engineered for demanding metal-cutting operations on CNC lathes and turning centers. This trigon-style insert features an 80-degree included angle, a 1/2-inch inscribed circle, and a 1/32-inch corner radius (0.0315 inches). The WSM20S proprietary coating designation identifies a PVD-applied TiCN, Al2O3, and Al multilayer coating from the Tiger-tec Silver series. With six available cutting edges, a chamfered and honed cutting edge style, and a negative rake geometry, this insert is designed for precision turning, facing, and boring. Licensed machinists and CNC operators working in job shops and production environments are the primary installers.

This insert is formulated primarily for stainless steel and superalloys and titanium (ISO material codes M and S), with secondary suitability for steel (ISO code P). The material grades M20, S20, and P20 indicate mid-range cutting speed and feed applications where edge toughness and thermal resistance are critical. Its RM5 chip breaker geometry supports stable chip control across turning, facing, and boring operations in both roughing and semi-finishing passes. The insert is held by clamp or pin methods and conforms to both ANSI and ISO standards. The industry standard cross-reference number is WNMG432-RM5 WSM20S.

Key Features

• Trigon (W) insert shape with 80-degree included angle and negative rake for strong edge geometry
• PVD-applied WSM20S coating (TiCN, Al2O3, Al) from the Tiger-tec Silver series for heat and wear resistance
• Six cutting edges per insert for extended tool economy
• RM5 chip breaker optimized for stainless steel, superalloys, and titanium at M20/S20/P20 material grades
• Chamfered and honed cutting edge style for reduced chipping on difficult-to-machine materials
• Compatible with clamp and pin insert-holding methods
• Conforms to ANSI and ISO standards; ISO code WNMG080408-RM5 WSM20S

Compatibility

Designed as an OEM-grade replacement or direct-application insert for WNMG-style toolholders accepting a 1/2-inch inscribed circle trigon insert with clamp or pin holding. Cross-references to industry standard number WNMG432-RM5 WSM20S under ANSI and ISO designations.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified clamping hardware for the toolholder to avoid insert fracture or seating errors. Verify insert seating and tool overhang before returning the machine to operation.