Walter 6944735 Turning Insert CNMG120408-RM5 WSM20S

Product Description

The WALTER 6944735 is a solid carbide coated turning insert designed for precision metal removal in demanding machining environments. Carrying the ISO designation CNMG120408-RM5 WSM20S, this insert features an 80-degree diamond shape, a 0.5-inch inscribed circle, and a 0.0315-inch (1/32 inch) corner radius. The RM5 chip breaker geometry and negative rake angle are engineered for stable cutting performance in interrupted or continuous cuts. Applied using a PVD process, the TiCN, Al2O3, and Al coating stack targets heat and wear resistance at the cutting edge. Machinists and CNC turning specialists install these inserts in toolholders that accept CNMG-style geometry.

This insert is suited for turning, facing, and boring operations. Its primary workpiece materials are stainless steel, superalloys, and titanium, placing it in ISO material groups M and S. Steel (ISO group P) is a listed secondary workpiece material. The WSM20S grade targets material grades M20, S20, and P20, making it applicable across a range of medium-duty cutting conditions in both production and job-shop settings. The insert is part of the Walter Tiger-tec Silver series and conforms to ANSI and ISO standards under the industry-standard number CNMG432-RM5 WSM20S.

Key Features

• CNMG120408-RM5 geometry with negative rake and 80-degree diamond shape for stable, multi-edge turning
• PVD-applied TiCN, Al2O3, and Al coating for wear and thermal resistance on difficult-to-machine alloys
• RM5 chip breaker optimized for stainless steel, superalloys, and titanium (ISO M and S groups)
• 4 cutting edges per insert; held by clamp and pin for rigid, repeatable positioning
• Maximum depth of cut of 0.2000 inches (5.00 mm) across turning, facing, and boring applications
• Chamfered and honed cutting edge style for edge security and reduced built-up edge formation

Compatibility

Designed for use in CNMG-style toolholders that accept a 0.5-inch inscribed circle, 3/16-inch thick insert with a 0.2030-inch hole diameter. Compatible with turning, facing, and boring operations per ANSI and ISO toolholder standards for CNMG432 geometry inserts.

Installation Notes

Installation is performed by machinists or CNC tooling specialists during toolholder setup or insert indexing. Power down and lock out the machine spindle before removing or seating inserts. Seat the insert fully against the toolholder pocket and engage the clamp and pin retention system before resuming cuts. Do not exceed the stated maximum depth of cut for the workpiece material being machined.